MXPA06002736A - Winged digging tooth. - Google Patents

Abstract

A digging tooth adapted to extend forward from a leading edge of a bucket or the like. The digging toogh has a forward end, with an edge extending thereacross, and a rear end. The digging tooth further includes wing structure formed integral with the digging tooth and extending from a surface on the tooth so as to provide the bucket with enhanced ground penetration capability while concomitantly shielding ground engaging components disposed rearwardly of a rear end of the digging tooth against wear and, thus, potentially extending the useful wear life of such components.

Description

EXCAVATOR WITH WINGS RELATED REQUESTS This application claims the benefit of Provisional Application Serial No. 60 / 501,381, filed on September 9, 2003.

FIELD OF THE INVENTION The present invention relates generally to ground engaging implements and more particularly to an excavating tooth adapted to be secured and projecting forward from the leading edge or guide of a bucket or the like thereof.

BACKGROUND OF THE INVENTION The buckets of different sizes and shapes are usually arranged in an operational combination with backhoes, loaders, excavators and equipment related to the work of the land. Most of the buckets include areas, ie a guide edge of the cuvette, side walls of the cuvette, etc., which are exposed and therefore, are highly susceptible to wear, especially when the cuvette is used in rocky environments or abrasives. In many tray designs, an edge or lip of elongated, transverse, one-piece base is welded to the other walls of the tray and serves as the guide edge of the tray. The edge of the bucket is often provided with a bevelled or sharpened design to improve the ability to penetrate to ground of the bucket. As will be appreciated, under conditions of highly compacted soil and / or rocky terrain, an important force is required to allow the edge of the bucket to penetrate the soil. To improve the penetration to the ground with the guiding edge of the bucket, it is well known to arrange a series of excavator teeth laterally separated and extended forward from the edge of the bucket. Each excavating tooth has a transverse edge at a leading end thereof to fracture the earth in advance and thus promote penetration with the rest of the excavating tooth, and finally the edge of the bucket. As will be appreciated, when the soil is fractured in advance with the excavating tooth on the edge of the bucket, it also facilitates the collection of soil material inside the bucket. Some excavating teeth are of a unitary or one-piece construction or design. A back portion of a one-piece excavating tooth is typically configured to be engaged, such as by welding, with the edge or lip of the tray, while the remaining portion of the excavating tooth is configured to extend forward from the edge of the tray. fracturing the earth before the edge of the bucket penetrates the earth. A large part of the ground engaging teeth, however, are designed as two-part systems. A conventional two-part excavating tooth system or assembly includes a ground excavator / excavator tooth and adapter arranged in operational combination with each other. The adapter includes a mounting base or portion and a nose portion projecting forward from the edge of the tray and to which the excavating tooth engages removably. In many applications, the base of the adapter is secured, as by welding with the guide edge of the cuvette. In many designs, another wear component in the cap form is provided backwardly of the excavating tooth to add protection to the adapter against wear. Regardless of the particular design of the excavating tooth, whether it is a one-piece design or configured as a two-part system or assembly, deterioration and wear of the guide edge of the tray is a major concern. The cutter edge or guide of the cuvette is typically difficult to protect against shocks, wear and typical forces associated with digging operations, guiding edge protection or cuvette cutter remains a major problem. While the longitudinal portions of the edge of the tray are protected by the mounting portion of any design of the excavating tooth, those portions of the edge of the tray that cover the distance between the adjacent lateral excavating tooth are exposed to the same wear environment as the tooth excavator. Unfortunately, the leading cutting edge of the excavating tooth provides only a limited area of ground fracture in advance of the cutting edge of the tray. As is known, excavating tooth designs have limited effects on the compacted earth material passing between the adjacent excavating tooth. Because of the onerous penalties associated with the replacement of the cutter edge of the bucket, and the replacement of related hardware, some companies add a hard carbide coating process on the face to prolong the life of those portions of the bucket edge between the excavating tooth laterally adjacent. However, such hard face carbide coating applications often exceed the cost of a new tray edge. The components of two-part excavating tooth systems are typically maintained in an operational combination with each other by various types of retaining devices. Most known detent devices are a type of flexible bolt or a type of bolt and retainer. Hundreds or thousands of backhoes use a flexible pin retainer to hold a tooth and an adapter in operational combination with each other. Bolt and retainer systems are also used in many of the grounding attachments and older machines to maintain an excavating tooth and the adapter in operational combination with each other. Ergonomics plays an important role in excavator tooth designs, in diagonal or vertical detent devices and these designs have become more popular due to their convenient access. The compatibility between the component parts of a two-part excavating tooth system is also a major problem. Due to the immense amount of implements In addition, the presence and location of certain design features in two-part excavating tooth systems requires consideration when changes are contemplated in any component of the excavation system. That is, when design changes are considered for some component of a two-part excavating tooth assembly, changes that may have an impact on existing tray designs must also be considered. To reduce the cost to the end user, most changes to the components of a two-part excavating tooth system must be compatible with the equipment already in the field. With respect to this, low production, expensive welding and repair of replacements continue to be a problem for the industry. For example, when changing an excavating tooth without considering the effects that these changes can have on the adapter, a simple change in the excavating tooth may also require cutting the existing adapter from the base of the bucket followed by welding a new adapter with the edge of the base of the tray to adapt the change in the tooth. In the interim, the bucket and the machine are out of service during the fitting process. The wear of the cutter edge of the bucket also requires time consuming and costly repairs. Due to the time consumed in cutting the edge of the pallet from the rest of the bowl, replacing a worn edge of the pallet frequently requires the additional step of replacing the adapters therein. Of course, the replacement of such Adapters frequently require more effort to attach all new adapters with the new pallet edge. The replacement of the blade edge, and especially a beveled blade edge, and the adapters is expensive and time-consuming. This is why there is a need and a constant desire for an excavating tooth that is designed to offer an improved protection against wear, for wear components disposed towards the back while maintaining the compatibility of existing excavating tooth systems. .

BRIEF DESCRIPTION OF THE INVENTION In view of the foregoing, and in accordance with one aspect of the invention there is provided an excavating tooth adapted to extend forwardly of an excavating implement having an edge extended transversely. The excavating tooth defines a longitudinal center line and has a front end portion, with a cutting edge extended therethrough, and a rear end portion configured for engagement with the edge of the implement. The digging tooth also includes divergent surfaces in upper and lower angular form having opposing side surfaces therein. The excavating tooth also includes a wing projecting laterally outward from each side surface of the tooth. Each wing is formed integrated with the rest of the tooth and has flat top and bottom surfaces, each extended in one direction generally parallel to the cutting edge through the front end portion of the tooth. The upper and lower surfaces of each wing are disposed between and in a different relationship to the flat relative to the upper and lower surfaces of the excavating tooth. In addition, each wing has a laterally enlarged rear portion, a forwardly tapered front portion, and an extended outer edge therebetween to provide the tooth with a progressively enlarged ground fracture zone, whereby sufficient protection is added. to wear to the edge of the implement. In a preferred embodiment, the rear end portion of the excavating tooth is provided with a blind cavity to receive and accommodate a longitudinal section of a nose portion of an adapter extending from the edge or lip of the tray. In a more preferred form, the blind cavity in the rear end portion of the tooth has a generally diamond-shaped configuration for a longitudinal major portion thereof. In one form, the laterally enlarged portion of each wing extends outwardly and forwardly from the rear portion of the tooth. In that configuration of the excavating tooth having a blind cavity defined in the rear end portion thereof, the excavating tooth also includes an opening for the blind cavity to accommodate at least a portion of a retention apparatus used to secure in shape. releasable the tooth and the adapter in an operative combination with each other. Preferably, one of the generally planar upper and lower surfaces in each wing of the tooth also defines an open groove or channel arranged in a relative general alignment relative to each other and in relation to an axis of the hole defined by the tooth. The open channel in the flat surface of each wing serves to accommodate and align a bolt of the holding apparatus with the hole defined by the tooth. Most operators prefer to use a flexible pin retainer as the holding device to hold the excavating tooth and the adapter in operative combination with each other. With respect to this, and in a preferred embodiment, an area, arranged in close relationship to the hole defined by the tooth, is configured to impart compression to a flexible pin retention apparatus, as the flexible pin is inserted in position for keep the tooth and the adapter in operational combination with each other. In another embodiment, an area arranged in close relation to the hole in the excavating tooth is configured to prevent an accidental axial displacement of the holding apparatus relative to the adapter or tooth. In another form, each wing extends laterally outwardly from an area on the opposing side surfaces of the tooth approximately midway between the upper and lower surfaces of the digging tooth. In this embodiment, and when combined to provide an open top channel in the pin receiving area on each tooth, the generally planar top surface of each wing on the tooth is configured to protect the ends of the retention apparatus extended beyond the opposite sides of the excavating tooth. To improve the ability of the excavating tooth to penetrate and fracture the earth, an elongated outer edge portion on each wing is configured with a cutting edge. In accordance with another aspect, an elongate digging tooth adapted to extend forwardly from the excavating implement having an extended transverse edge is provided. The excavating tooth defines a central axis and has a front end portion, with a transverse cutting edge and a rear end portion configured for engagement with the transversely extended edge of the implement. The excavating tooth also includes divergent surfaces in upper and lower angular form which have opposite side surfaces between them. The excavating tooth also includes a wing structure that projects generally horizontally and laterally outward from an area on one side of the tooth. The wing structure is integrated with the rest of the excavating tooth and has generally horizontal upper and lower surfaces. The upper and lower surfaces of the wing structure are disposed between and in a different relationship to the flat relative to the upper and lower surfaces of the excavating tooth. The wing structure has a rear portion widened laterally, a front portion narrowed laterally, and an outer edge extended between them and for a greater portion of the length thereof, converges towards the central axis of the tooth so provide the excavating tooth with a widened area of ground penetration to facilitate the penetration of the edge of the bucket. In one form, a longitudinal major portion of the outer edge of the wing structure is configured to provide the ability of the wing to slice and fracture the earth. Preferably, the wing structure is disposed on the tooth in a generally symmetrical relationship with respect to the central axis of the tooth, which allows the excavating tooth to be inverted about the central axis. In another form, the excavating tooth is provided with a second wing structure provided and projected generally horizontally and laterally outward from an area on an opposite side of the tooth. The second wing structure has generally horizontal upper and lower surfaces, the upper and lower surfaces of the second wing structure being disposed between and in a different relationship to the flat one with the upper and lower surfaces of the excavating tooth. The second wing structure preferably has a rearwardly enlarged side portion, a forwardly tapered front portion and an outer edge extended therebetween and converging towards the central axis of the tooth, which provides the excavating tooth with a widened zone of penetration to earth to facilitate the penetration of the extended edge transversely of the excavating implement. In a more preferred form, the wing structure extended from those areas on the opposite sides of the tooth is arranged approximately in half between the upper and lower surfaces of the tooth. In a preferred embodiment, the rear end portion of the excavating tooth is provided with a blind cavity to receive and accommodate a longitudinal section of a nose portion of an adapter extending from the edge or lip of the tray. In a more preferred form, a marginal edge extending around the blind cavity provided in the rear end portion of the tooth has a diamond-like configuration for a major longitudinal portion thereof. In this embodiment, where the blind cavity has a diamond-like configuration, the excavating tooth also defines a pair of holes aligned axially, each opening to the blind cavity and arranged along an axis extended at an angle which varies between about 25 ° and 65 ° relative to the transverse cutting edge in the front end portion of the tooth. In another form, the laterally enlarged portion of each wing extends outwardly and forwardly from the rear end portion of the tooth. In another form, the excavating tooth also includes opposite surfaces arranged within the blind cavity defined by the tooth to add stability to the tooth during the excavation operation. According to another aspect, a bucket having a leading edge and a plurality of two-part excavating tooth mounts connected to the edge in a side-by-side relationship is provided in combination. Each assembly Excavator tooth includes an adapter having a nose portion extended forward from the bowl edge and to which a replaceable excavating tooth is secured. Each excavating tooth has a leading end, with an edge extending transversely therethrough, a rear end positioned adjacent the tray edge and defining a blind cavity to receive the nose portion of the adapter, a top surface extended forward and downward from the trailing end and forward of the leading edge of the excavating tooth and a lower surface extending forward and upwardly from the trailing end and toward the leading end of the digging tooth. Each excavating tooth has a wing structure that includes a pair of wings extended outwardly in a direction generally parallel to the leading edge on the tooth from an area on each side of the tooth approximately midway between the upper and lower surfaces thereof. Each wing on the tooth has a rear portion enlarged laterally and a forward portion narrowed laterally so that, for a greater length of the same, an outer edge of each wing converges towards the central ene of the tooth and diverges in relation to the outer edge of a wing in an adjacent tooth. The wings on each tooth are designed to protect against wear the portion of the bowl edge disposed between the adjacent tooth assemblies. In a preferred form, the rear end portion of the excavating tooth is configured with a blind cavity to receive and accommodating a longitudinal section of a nose portion of an adapter extended from the transversely extended edge of the excavating implement. The blind cavity may have a diamond-like configuration or a rectangular cross-sectional configuration. In one embodiment, each tooth also includes a hole opening for the blind cavity at the trailing end of the tooth to accommodate at least a portion of an apparatus used to releasably secure the tooth and the adapter in an operative combination. In a preferred form, the wing on each excavating tooth has generally upper and lower flat surfaces, and with the outer edge of the wing on each excavating tooth having angled converging surfaces to provide each wing with a cutting edge to facilitate penetration to Earth. In a more preferred form, one of the generally planar surfaces on each wing of the excavating tooth also defines an open channel or slot arranged in a general alignment with an axis of the hole defined by the tooth to accommodate and align a flexible bolt of the holding apparatus with the hole defined by the tooth. In addition, an area of the excavating tooth, arranged in a close relationship relative to the hole, is preferably configured to compress the flexible bolt of the retention apparatus as the flexible bolt is inserted in a position to hold the tooth and the adapter in a combination operative among themselves. In addition, an area of the excavating tooth arranged in a close relationship with the The orifice is configured to prevent inadvertent axial displacement of the retention apparatus relative to the adapter or tooth. In one form, the generally planar surface of each wing defining the channel is arranged and configured to protect a longitudinal portion of the extended retention apparatus further to either side of the excavating tooth. In one design, the tooth of each excavating tooth assembly is configured in such a way that the blind cavity has a generally diamond-like cross-sectional configuration. In this tooth design, the tooth of each excavating tooth assembly defines a pair of axially aligned orifices that open into the tooth cavity and are disposed along an extended axis at an angle that is between approximately 25 °. and 65 ° relative to the edge extended transversely at the front end of the tooth. In accordance with another aspect, a ground engaging tooth adapted to be mounted on an excavating implement and having a wear component arranged rearwardly thereof is provided. The ground engaging tooth defines a central axis and has a front end portion, with an edge extending transversely therethrough, and a rear end portion. The digging tooth also includes divergent angled upper and lower surfaces having opposing side surfaces therebetween. The excavating tooth also includes a lateral free end projecting outwards from each lateral surface on the tooth. Each wing is formed integral with the rest of the tooth and has flat top and bottom surfaces, each extending in a direction generally parallel to the cutting edge through the front end portion of the tooth. The upper and lower surfaces of each wing are disposed between and in a different relationship to the flat relative to the upper and lower surfaces of the excavating tooth. In addition, each wing has a laterally enlarged rear portion, a laterally tapered front portion and an outer edge extended therebetween to provide the tooth with a progressively enlarged ground fracture zone, thereby adding greater wear protection for the edge of the implement. In a preferred embodiment, the rear end portion of the excavating tooth is provided with a blind cavity for receiving and accommodating a longitudinal section of a nose portion of an adapter extending from the edge or lip of the tray. In a more preferred mode, the blind cavity in the back end portion of the tooth has a generally rhombus-like configuration for a larger longitudinal portion thereof. The tooth is also provided with a free end projection formed integrated with the rest of the tooth and extended away longitudinally along at least one of the multiple surfaces of the tooth between the rear end portion and the forward end portion. of the same. A rear portion of the projection extends far of the tooth surface from which it projects a greater distance than the front portion, so that an outer edge of the projection converges from the back towards the front and towards the central axis of the tooth so that after the initial penetration into the ground, the outer edge of the projection is arranged to initially fracture the earth through which the tooth passes, which reduces wear on the wear component arranged backward of the two-piece tooth assembly. In one form, the projection extends away from the upper surface of the tooth in an extended direction generally normal to the edge extended transversely through the forward end of the tooth. In another form, the projection is displaced laterally in relation to the upper surface of the tooth, so that the projection is disposed closer to one lateral surface of the tooth than the other. In another form, the projection extends upward and longitudinally along an area generally centered between the lateral surfaces of the tooth. Regardless of where the projection is located in the excavating tooth, a cutting edge extends along a larger portion of the exterior end of the projection, in order to facilitate penetration to ground by the projection. In another embodiment, the back end portion of the excavating tooth defines a blind cavity that opens to the back of the tooth to receive and accommodate a longitudinal section of a nose portion of an adapter extended from an edge.

Transverse extended of the excavating implement. The blind cavity opens to the back of the excavating tooth, and preferably has a diamond-shaped cross section configuration for a larger longitudinal portion thereof. In another form, the blind cavity has a cross-sectional profile with a rectangular configuration for a larger longitudinal portion thereof. In another embodiment, the projection has generally parallel upper and lower surfaces that extend laterally outward from a lateral surface of the tooth. The upper and lower surfaces of the projection preferably are disposed between and in a different relationship to the flat one with the upper and lower surfaces of the excavating tooth. In another form, the projection extends laterally from a lateral surface of the dcc approximately midway between the upper and lower surfaces and in a direction generally parallel to the edge extended transverse through the leading end of the tooth. To promote the versatility of the coupling tooth to ground, the projection extended laterally from a lateral surface of the tooth preferably is arranged symmetrically with respect to the central axis, thus allowing the tooth to be inverted around the central axis . In another embodiment, the ground engaging tooth includes a second free end projection designed as a mirror image of another free end projection. That is, the second free end projection extends from the other surface side of the tooth. More specifically, such a second projection on the tooth extends laterally outwardly from the other side approximately to the middle of the upper and lower surfaces and in a direction generally parallel to the edge extended transverse through the leading end of the tooth. In both modalities, the projection is formed as an integrated part of the excavating tooth. Preferably, a rear portion of each projection, extended from the respective lateral surface of the tooth has generally flat surfaces extended generally parallel to the edge at the forward end of the tooth. In a preferred embodiment, the ground engaging tooth also defines an orifice having an extended axis generally normal to the central axis. Such an orifice in the tooth opens into the blind cavity defined by the tooth to accommodate at least a portion of the retention apparatus used to releasably secure the tooth and the adapter in an operative combination with each other. In a modality, one of the generally planar surface in each projection defines an open channel arranged in a general alignment with the axis of the hole in the tooth to accommodate and align the retention apparatus of! same. As mentioned before, many operators prefer to use a flexible pin type retainer to operatively secure the tooth and the adapter in an operational combination with each other. With respect to this, and in another form, an area of the fixed tooth near the hole in the tooth is it is configured to compress a flexible pin-type retention apparatus while the flexible pin of the retention apparatus is inserted in a position to hold the tooth and the adapter in an operative combination with each other. In a preferred embodiment, an area of the excavating tooth arranged in a close relationship relative to the hole in the tooth is configured to prevent inadvertent axial displacement of the holding apparatus relative to the adapter or tooth. In that form, wherein the projection extends from the lateral surface of the excavating tooth, the open channel provided in one of the generally planar surfaces of the respective wing together with the arrangement of the generally planar surface defining such channel in the wing, is configured to protect a lateral portion of the extended retention apparatus beyond the opposite sides of the tooth. In accordance with another aspect, a ground engaging tooth adapted to be mounted on an excavating implement and having a wear component arranged rearwardly thereof after being mounted on the excavating implement is provided. The excavating tooth defines a central axis and has a front end portion, with a transverse cutting edge and a rear end portion configured for engagement with the transversely extended edge of the implement. The digging tooth also includes angularly divergent upper and lower surfaces disposed therebetween. The excavating tooth is also provided with a first projection extended away and longitudinally along at least a longitudinal portion of a tooth surface. The longitudinal portion of the projection has a shorter length than the length between the leading and trailing ends of the tooth. The digging tooth is also provided with a second projection extending from the same surface on the tooth backward of the first projection. During the operation, the first and second projections on the tooth are combined together to fracture the ground through which the tooth passes, and the wear on the wear component arranged rearward of the two-piece tooth assembly is reduced . Preferably, the excavating tooth is provided in the rear end portion thereof, with a blind cavity that opens in the back of the tooth to receive and accommodate a longitudinal section of the nose portion of the adapter, extended forwardly from the guide edge of the excavator implement. The cavity opens to the back of the tooth and defines a generally diamond-shaped cross-sectional configuration for a larger longitudinal portion thereof. In a more preferred embodiment, the excavating tooth also includes third and fourth projections extending from another surface on the tooth disposed in an opposite relationship relative to another excavating tooth surface from which the first and second projections extend. The third and fourth projections preferably are configured as mirror images of the first and second projections, respectively. In accordance with another aspect, an elongate digging tooth is provided for a two piece excavating tooth assembly adapted to be secured to a transverse extended edge of a trough or its like. The excavating tooth defines a central axis and has a leading end, with a cutting edge extending transversely therethrough, and a rear end with a blind cavity opening thereto to receive and accommodate a nose portion of the adapter extended from the transversely extended edge of the tray. Each of the tooth and adapter defines a hole that is arranged in register with another after the excavating tooth and the adapter are joined together to allow the holding apparatus to pass at least partially through the holes, thus which the tooth and the adapter are kept in an operative combination with each other. The orifice defined by the tooth defines an extended axis generally normal to the central axis of the tooth, with the excavating tooth also includes a top surface extended forward and downward from the trailing end and towards the cutting edge of the digging tooth, and a lower surface extending forward and upward from the trailing end and towards the cutting edge of the tooth excavator. The digging tooth also includes a generally horizontal projection extending laterally outward from an area on one side of the tooth. The projection has generally horizontal and parallel upper and lower surfaces arranged between and in a different relationship to the plane in relation to the upper and lower surfaces of the excavating tooth, the projection has a rear portion enlarged laterally, disposed forward of the axis defined by the hole in the tooth and an outer edge extended forward from the rear portion enlarged laterally of the projection and converging towards the central axis of the tooth, which provides the excavating tooth with a progressively enlarged penetration zone to facilitate the penetration of the tray edge. In a preferred form, the projection is formed integrally as part and with the rest of the tooth. In addition, the tooth of preference is configured so that the marginal edge extending around the cavity that opens toward the back of the tooth has a generally rectangular cross-sectional configuration. In a preferred embodiment, the projection is arranged on the tooth in a generally symmetric relationship with respect to the central axis, thereby allowing the tooth to be inverted about the central axis. In a more preferred form, the projection extends laterally outwardly from a side surface of the tooth approximately midway between the upper and lower surfaces and in a direction generally parallel to the cutter edge extended transversely through the front end of the tooth. tooth. In accordance with another aspect, an elongated excavating tooth is provided for a two-piece excavating tooth assembly adapted to be secured to an extended edge in the form cross section of a bucket or its similar. The digging tooth defines a central axis and has a leading end, with a cutting edge extending transversely therebetween, a rear end having a blind cavity open thereto to receive and accommodate a nose portion of an adapter extended forwardly from the edge extended transversely of the tray. Each of the tooth and adapter defines a hole that is arranged in register with another after the excavating tooth and the adapter are joined together to allow the holding apparatus to pass at least partially through the holes, thus which the tooth and the adapter are kept in an operative combination with each other. The hole in the tooth defines an extended axis generally normal to the central axis of the tooth. The digging tooth also includes a top surface extending forward and downward from the trailing end and toward the cutting edge of the digging tooth, and a bottom surface extending forward and upwardly from the trailing end and toward the cutting edge of the digging tooth. The excavating tooth also includes a generally horizontal projection extending laterally outwardly from an area on one side of the tooth, the projection having upper and lower surfaces disposed between and in a different relationship to the planar relative to the upper and lower surfaces of the tooth. Excavator tooth The projection on the tooth is arranged rearwardly of the axis defined by the hole in the tooth and the rear end of the tooth whereby the excavating tooth with an enlarged ground penetration zone progressively to facilitate the penetration of the tray edge. In a preferred form, the projection is formed integrally as part and with the rest of the tooth. In one embodiment, the projection on the tooth has at least one surface facing forward at a vertical angle to improve the ability of the projection to fracture the ground before and thus protect the transversely extended edge of the tray against wear. In one form, the projection is arranged on the tooth in a generally symmetric relationship with respect to the central axis whereby the tooth is allowed to be inverted about the central axis. In a more preferred form, the projection extends laterally outwardly from a lateral surface on the tooth approximately midway between the upper and lower surfaces and in a direction generally parallel to the cutter edge extended transverse through the front end. of the tooth. A main objective of the present invention is to provide a winged excavating tooth that provides the bucket of a general type, with enough wear resistance at a low cost. Another feature of the present invention relates to the provision of an excavating tooth that also improves ground penetration capabilities while protecting the tray edge against wear in highly compacted and / or rocky environments. Another feature of the present invention relates to providing a cuvette with a new cutting edge preferably, sharpening, each time the excavating tooth is replaced. Another object of the present invention is to provide a winged excavating tooth configured to protect the components disposed rearwardly of the excavating tooth against wear. Another object of the present invention is to provide a winged excavating tooth extended forward of the bowl edge whereby it takes the initial digging force while providing a gradually widened ground penetration zone to facilitate ground penetration of the bowl edge.

Another feature of the present invention relates to providing a ground engaging tooth that offers low cost replacement protection for a cuvette edge of any dimension while also increasing the capacity of the cuvette. Also another feature of the present invention relates to the provision of several excavating tooth assemblies spaced laterally in a side-by-side relationship through an edge of the bucket that moves the earth and where each excavating tooth assembly includes a adapter with a replaceable excavator tooth extended therefrom, and wherein the excavating tooth in combination with each other, protects and forms a sharp return edge extended forward and across the edge of the bucket that moves the earth. Another feature of the present invention relates to an excavating tooth having a winged structure which is configured to nest, support and guide the holding apparatus with respect to an opening in the tooth, through which the holding apparatus passes longitudinally. Another feature of the present invention relates to an excavating tooth that is configured to compress a flexible pin-type retention apparatus prior to insertion of the retention apparatus into the retention apparatus that receives a receiving hole of an adapter, which forms part of a two part excavating tooth system. Another feature of the present invention relates to an excavating tooth that is configured to protect the opposite ends of the extended holding apparatus beyond the outer surfaces of the excavating tooth. Another feature of the present invention relates to an excavating tooth which, after complete insertion of the retention apparatus, is preferably designed and configured to prevent inadvertent movement of the retention apparatus relative to the excavating or adapter tooth. These and other objects, goals and advantages of the present invention will become apparent from the following detailed description and description of the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a fragmentary top plan view of a bucket edge with a series of excavating tooth assemblies, which incorporates the principles of the present invention, coupled thereto. Figure 2 is a sectional view taken along line 2-2 of Figure 1. Figure 3 is a sectional view taken along line 3-3 of Figure 1. Figure 4 is a perspective view of an excavating tooth incorporating the principles of the present invention. Figure 5 is a side elevation view of a shape of the retention apparatus used in combination with the present invention. Figure 6 is a fragmentary sectional view taken along line 6-6 of Figure 3. Figure 7 is a sectional view taken along line 7-7 of Figure 1. Figure 8 is a top plan view of an alternative form of the present invention. Figure 9 is a side view of the embodiment of the invention shown in Figure 8. Figure 10 is a rear view of the embodiment of the invention shown in Figure 8. Figure 11 is a sectional view taken along of line 11-11 of Figure 10. Figure 12 is an elongated sectional view of an area enclosed from Figure 11, showing a shape of the retention apparatus for insertion into an operative association with the excavating tooth. Figure 13 is an elongated view similar to Figure 12, which shows the retention apparatus inserted in another operative association with the excavating tooth. Figure 14 is an elongated view similar to Figure 12 and 13 showing the progressive insertion of the retention apparatus into another operative association of the excavating tooth. Figure 15 is an elongated view of an opposite, but corresponding, side of the excavating tooth after the retention apparatus has been arranged in an operative association with the excavating tooth. Figure 16 is a fragmentary, side elevational view of the excavating tooth illustrated in Figure 8 and having a holding apparatus arranged in an operative association therewith. Figure 17 is a top plan view of another embodiment of the present invention. Figure 18 is a rear view of the embodiment of the invention shown in Figure 17. Figure 19 is a side elevational view of another embodiment of the present invention. Figure 20 is a rear view of the embodiment of the invention illustrated in Figure 19. Figure 21 is a side elevational view of another embodiment of the present invention. Figure 22 is a top plan view of the embodiment of the invention illustrated in Figure 22. Figure 23 is a sectional view taken along line 23-23 of Figure 21. Figure 24 is a view in the upper floor of another embodiment of the present invention. Figure 25 is a sectional view taken along line 25-25 of Figure 24. Figure 26 is a top plan view of another embodiment of the present invention. Figure 27 is a sectional view taken along line 27-27 of Figure 26. Figure 28 is a top plan view of another embodiment of the present invention. Figure 29 is a sectional view taken along line 29-29 of Figure 28. Figure 30 is a fragmentary, sectional elevated view of the embodiment of the invention illustrated in Figure 28. Figure 31 is a perspective view of another form of the present invention; and Figure 32 is a side elevational view of the embodiment of the invention illustrated in Figure 31.

DETAILED DESCRIPTION OF THE INVENTION The present invention is susceptible to modalities in multiple forms and are shown in the drawings, and the different embodiments of the invention will be described, with the understanding that the examples of the invention herein established are not intended to limit the invention to the specific embodiments illustrated and described. Referring now to the drawings, where similar reference numbers indicate equal parts through the different views, a ground-engaging implement, such as a bucket or its like, generally indicated with the number 10 with a series, is shown. of 12 excavator teeth assemblies arranged in a side-by-side relationship with each other. The bucket 10 is of the common type arranged in combination with a backhoe, a front loader, an excavator or an earthwork implement. As shown, the cuvette 10 includes a base lip or lip 14 extended through and welded to the remainder of the cuvette 10. As will be appreciated, the cuvette lip or lip 14 is usually a one-piece construction and can have variable lengths, depending on the particular application. Each excavator tooth assembly 12 extends forwardly from the tray edge 14 to fracture, penetrate and trench the soil material in advance and thus promote penetration of the tray edge 14 into the soil. Typically, and with the exception of excavated tooth mounts towards the opposite corners of the trough 10, most of the tooth assemblies 12 have a construction similar to each other. In accordance with this, only an excavating tooth assembly 12 will be described in detail. As shown in Figure 2, each excavator tooth assembly 12 is preferred, it is configured as a two part system including an adapter 20 and a replaceable excavating point or tooth 22. The adapter 20 and the excavating tooth 22 are releasably held in an operative combination with each other by a holding apparatus 24.

Preferably, the adapter 20 is a one-piece construction and has an elongated free end configuration. More specifically, the adapter 20 includes a base portion 26 and a nose portion 28. The base portion 26 is configured for engagement with the bowl edge 14 with the nose portion 28 extended forward therefrom. Within the industry, it is very common to couple the base portion 26 of the adapter with the tray edge 14 with welding. As shown in Figure 3, the nose portion 28 of the adapter defines a through hole or hole 29 provided toward one end thereof. Each excavating tooth 22 has a generally elongated wedge-shaped configuration that includes a first surface 30 or upper surface and a second surface 32 or lower surface (Figure 2). As shown in Figure 2, the upper surface 30 of the tooth 22 extends forwards and downwards from a mounting or rear end 34 towards the front end 36 of the tooth 22. The lower surface 32 of the tooth 22 extends forwardly and upwardly from the rear mounting end 34 toward the forward end 36 of the tooth 22. In the illustrated embodiment, the rear mounting end 34 and the forward end 36 of the tooth 22 are axially aligned along a longitudinal centerline 38 of the tooth 22. As shown in Figure 3, the excavator tooth 22 or grounding tooth also includes a pair of side surfaces 42 and 44 laterally spaced apart. . Furthermore, as shown in Figures 1 and 4, each excavating tooth 22 defines a cut or edge 46 of ground penetration, extended transversely through the forward end 36 of the tooth 22. With reference to Figure 3, to allow that the replaceable excavating tooth 22 be mounted in an operative combination with the adapter 20, a blind cavity or socket 50 is defined and opened to the rear end 34 of each ground engaging tooth 22. In a preferred embodiment, the cavity or bushing 50 essentially centers on the longitudinal central line 38 of the tooth 22. The connection between the adapter 20 and the excavating tooth 22 can have a multiplicity of different shapes without departing from the scope and spirit of the tooth. invention and in cross section has a closed margin 52 extended around it. As will be appreciated, the cross section of the blind cavity 50 in the tooth 22 generally corresponds to the cross section of the portion 28 of. adapter nose 20. As such, and when the adapter 20 and the excavating tooth 22 are assembled in an operative combination with each other, a longitudinal portion of the nose portion 28 of the adapter extends the longitudinal shape and fits within the blind cavity 50 in the excavating tooth 22. In the embodiment shown in FIG. Figures 1 to 5, and to improve the connection between the adapter 20 and the ground engaging tooth 22, the nose portion 28 of the adapter and the blind cavity 50 defined by the tooth, preferably, have a unique configuration. As shown, the blind cavity 50 that opens toward the rear end 34 of the tooth 22 has a cross-sectional profile having a diamond-like configuration for a portion greater than the length thereof. As will be appreciated, the nose portion 28 of the adapter has a corresponding diamond-shaped cross-sectional configuration for most of its length. For a detailed description of the advantages and the unique features to be achieved by providing a diamond-shaped configuration for the union between the nose portion 28 of the adapter and the blind cavity 50 of the excavating tooth, attention is directed to the Patent Application Ser. United States 6,047,487 and 6,247,255, each assigned to H &L Tooth Company, with the important portions of each incorporated herein by reference. The adapter 20 and the excavating tooth 22 are preferably designed to accommodate either a diagonal bolt retainer system or a vertical arrangement. The excavating tooth 22 includes a through hole, which in the embodiment illustrated, includes a a pair of openings or holes 54, 56 positioned to cooperate with the opening or hole 29 in the nose portion 28 of the adapter and aligned axially along a diagonal axis 58. In the embodiment illustrated in Figure 4, the axis 58 extends at an angle varying between about 25 ° and 65 ° relative to the edge 46 extended transverse through the first end 36 or leading end of the excavating tooth 22. In a more preferred embodiment, an axis 58 extends at an angle of approximately 45 ° relative to the edge 46 extended transverse through the first end 36 of the excavating tooth 22. To facilitate the manufacture of the adapter 20 and the excavating tooth 22, the shaft 58 extends generally normal to the upper surface inclined in the nose portion 28 of the adapter and generally perpendicular to the longitudinal axis or central line 38 (Figure 1) of the excavating tooth 22. The apparatus 24 for holding the adapter 20 and the tooth Excavator 22 in operational combination can take advantage of different forms without departing from the scope and spirit of the present invention. In the embodiment shown in Figure 1, the apparatus 24 includes an elongate flexible pin structure 60. The flexible pin retainer 60 is typically elliptical in cross section and as shown in Figure 5, includes a first penetration half and an elongated member 62 and a second elongated member or member 64 joined in a conventional manner by a compressible elastomer 66 insured between them. The half 62 of the bolt has a bevelled end portion 65 at opposite ends thereof.

It is sufficient to mention that, the flexible bolt retainer 60 has a blunt tipped surface at opposite ends and with the hammer or other tool (not shown) used to activate the flexible bolt 60 through any opening 54 and 56 (FIG. 3) and inside the hole 29 in the adapter. The outer diameter of the bolt half 62 is abruptly reduced below the bevelled end portion to create a radial shoulder 67 at each end of the flexible bolt 60. As is known, and when the flexible bolt 60 is fully inserted through any opening 54, into the hole 29 in the adapter 20, the longitudinal distance between the radial shoulders 67 is measured to releasably retain with the bolt 60 inside. of the hole 29 in the adapter 20 while the remaining longitudinal portion of the bolt 60 abuts against the tooth 22 at the inner edge of the openings 54, 56. In the embodiment shown in Figure 6, the excavating tooth 22 is also provided with a stabilizing structure 70 arranged in and towards the closed end of the blind cavity. As shown, the stabilizing structure 70 includes a pair of generally flat stabilizing sockets 72 and 74 which after the ground engaging tooth 22 is slidably arranged in an operative combination with the nose portion 28 of the adapter, are adapted to cooperate with a complementary structure in the nose portion 28 of the adapter, whereby it adds stability with the excavating tooth 22 during the excavation operation. In accordance with the present invention and as shown in Figures 1, 3 and 4, the excavating tooth 22 also includes a wing structure 80, preferably, including first and second wings 82 and 84 projecting laterally outward from the sides 42 and 44, respectively of the Excavator tooth 22. The purpose of the wing structure 80 is a protective tube. That is, the wing structure 80 serves to protect the ground engaging components arranged rearwardly at the rear end 34 of the excavating tooth 22 against wear. Second, the wing structure 80 serves to gradually broaden the ground penetration zone provided by each excavator tooth assembly 12. In addition, the wing structure 80 improves the penetration ability of the bowl edge 14 into the ground while reducing the energy required to carry out such purposes. further, and when observed in combination with each other, the cumulative effect of the wing structure 80 on the excavating tooth 22 extends laterally through the bowl edge 14 to improve the loading of the bowl. In the illustrated embodiment, the wing structure 80 including wings 82, 84 is formed integral with the remainder of the excavating tooth 22. In one form, each wing 82, 84 is designed such that a rear longitudinal sweep configuration is provided. to the tooth 22. In the embodiment illustrated in Figures 1 and 4, each wing 82, 84 extends laterally outwardly from the lateral surfaces 42, 44, respectively, and has a laterally enlarged portion 86, a portion 88 narrowed front and an outer edge 90 extended between them. Preferably, each wing 82, 84 has a rear longitudinal sweep design for a greater portion of the length of the tooth 22 between the front and rear ends 36 and 34, respectively, thereof. That is, in one form, each wing 82, 84 is designed to have a rear sweep configuration for more than one half of the total length of the tooth, so that the excavating tooth 22 or ground-engaging tooth of assembly 12 has a zone of ground penetration gradually widened to initially fracture the ground taken up by the tooth in advance before the edge of the trough 14. The tilt or reduction of the lateral outward width or extension of the wings 82, 84 towards its front ends minimizes the force required for the initial penetration of the excavating tooth 22 while the swept or dynamic rear winged design also facilitates ground penetration while allowing the excavating tooth to continuously and gradually expand the penetration zone for each excavating tooth 22, thereby improving the penetration capacity to ground for the cuvette 10. Although in a preferred embodiment the wings 82, 84 extend the length Uudinally for a larger longitudinal portion along the opposite lateral surfaces 42, 44, respectively, of the excavating tooth 22, it should be appreciated that the wings 82, 84 may have a shorter length than shown, while extending between the ends. , 36 front and rear, tooth 22 without departing from the spirit and scope of the invention.

The outer edge 90 of each wing 82, 84 may have different designs along its length, without departing from the scope and spirit of the invention. In the embodiment shown in Figures 1 and 4, an edge 90 has a stepped profile configuration between the opposite ends of each wing 82, 84. In the illustrated manner, the rear portion of the edge 90 of each wing 82, 84 preferably , extends in a relationship generally parallel to the center line axis 38 of the excavating tooth 22 by a longitudinal distance ranging from about one third to one half of the total distance between the rear end 36 and the forward end 34 of the excavating tooth 22. Then, the outer flange edge 90 converges laterally toward the central axis 38 of the tooth 22. Notably, the edge portion extended along the laterally tapered portion 88 of each flange 82, 84 extends in a ratio generally parallel in relation to the lateral surface of the tooth 22, from which the wing extends laterally. As such and for a greater portion of the length of the outer edge 90, the flange edges of the laterally adjacent excavator tooth extended from the guide edge of the tray diverge relative to each other. As shown, the profile at the edges of the wings 82, 84 preferably provide the tooth 22 with the dynamic or rear sweeping design that promotes the movement of the winged tooth 22 across the ground. With this design, and while the wings 82, 84 wear out, the stepped profile configuration extended along the outer edge 90 allows the wings 82, 84 maintain a widened, gradual but important penetration zone while the excavating tooth 22 moves in the ground. As shown in Figure 3, a rear portion of each flange 82, 84 extending laterally from a respective lateral surface on the excavating tooth 22 has a first upper or flat surface 92 and a second lower or flat surface 92. , extended towards the outer edge 90. The upper and lower surfaces 92, and 94, respectively, of each wing or projection 82, 84 are disposed between and in a different relationship to the planar relative to the upper and lower surfaces 30, 32 respectively in the excavating tooth 22. In In a preferred form, each projection 82, 84 extends laterally outwardly from an area on the respective lateral surface of the tooth 22 disposed approximately halfway between the surfaces 30., 32 upper and lower, respectively, of the tooth 22. That section of the outer edge 90 arranged in a linear fashion near the rear of each wing, and as shown in Figure 5, is preferably configured to promote the capture of particulate material between the flanges of the adjacent lateral tooth 22 and the cuvette edge 14. The capture of such particulate material also promotes protection of the exposed portion of the cuvette edge 14. In one embodiment, the remaining linear edge portion of each wing 82, 84 is preferably designed to promote ground penetration of the tooth 22. That is, the lateral end of each wing 82, 84 is preferably provided with first and second edges 96 and 98 (Figure 3) respectively, at an angle or converging relative to each other to provide the remaining portion of the edge 90 of each wing 82, 84 with a razor-like or tapered configuration, which promotes the ability of each wing 82, 84 slide, penetrate and fracture the soil before the edge 14 guide the bucket. There are already hundreds of thousands of two-piece excavating tooth systems that have an excavating tooth with a generally rectangular blind pocket or pocket and a rectangular shaped nose portion in the adapter together with the horizontally disposed holding apparatus and are widely used. in the industry. As such, Figures 8 to 16 illustrate an alternative form of excavating tooth that can be easily used in combination with one or more conventional two-piece excavating tooth systems. This alternative form of the excavating tooth is generally indicated with the reference numeral 122 in Figures 8 to 16. The elements of this alternative excavating tooth which are functionally analogous to the components described above with respect to the excavating tooth 22 are indicated by numbers of reference identical to those listed above with the exception of this embodiment using reference numbers in series of 100. As shown in Figure 8, the excavating tooth 122 is configured to be used with an adapter 120 with a nose portion 128 extended forward from an edge of an implement or bucket, as described above and having a widely used rectangular cross section configuration. That is, the adapter 120 also includes a conventional mounting portion (not shown) configured to couple the adapter 120 with the edge of the cuvette or its like. Excavator tooth 122 has a generally elongated wedge-shaped configuration that includes either first surface 130 or upper surface and second surface 132 or lower surface (Figure 9). As shown in Figure 9, the upper surface 130 of the tooth 122 extends forward and downwardly from a mounting or rear end 134 toward the forward end 136 of the tooth 122. The lower surface 132 of the tooth 122 extends forwardly. and upward from the rear mounting end 134 to the forward end 136 of the tooth 22. In the embodiment illustrated in Figure 7, the rear mounting end 134 and forward end 136 of the tooth 122 are axially aligned along of a longitudinal center line 138 of the tooth 122. With reference to Figure 8, the excavating tooth 122 or ground-engaging tooth also includes a pair of side surfaces 142 and 144 laterally spaced apart. The digging tooth 22 also includes cut edge or ground penetrating edge 146, extended transversely through the forward end 136 thereof. With reference to Figure 9, to allow the replaceable excavator tooth 122 to be mounted in a combination operative with the adapter 120, a blind cavity or bushing 150 is defined and opened to the rear end 134 of each tooth 122. In a preferred embodiment, the defined cavity or bushing 150 opens to the rear 134 of the digger tooth 122, essentially centers on the longitudinal central line 138 of the tooth 122. As shown in Figure 10, the cavity or socket has a generally rectangular configuration that is complemented by the cross-sectional configuration of the nose portion 128 of the adapter thereby , the adapter 120 and the excavating tooth 122 are allowed to assemble in an operative combination with each other, with a longitudinal portion of the nose portion 128 of the adapter (Figure 8) extended laterally and accommodated within the blind cavity 150 of the excavating tooth 122. In accordance with the present invention and as shown in Figures 8 and 10, the excavating tooth 122 also includes a wing structure 180, preferably, including first and second wings 182 and 184 projecting laterally outwards from the lateral surfaces 142 and 144, respectively of the excavating tooth 122. In the same sense, that the wing structure 80 described above, the Wing structure 180 in excavating tooth 122 serves to protect the ground engaging components disposed rearwardly at the rear end 134 of the excavating tooth 122 against wear. Also, the wing structure 180 serves to gradually widen the ground penetration zone provided by the excavating tooth 122 and thus serves to improve the penetration capacity of the bowl edge into the ground while reducing the energy required to carry out such purposes. Each wing 182, 184 comprising the wing structure 180, preferably, is formed integrally with the rest of the excavating tooth 122. In addition, each wing 182, 184 is designed such that a rear longitudinal sweep configuration is provided to the tooth 122. In the embodiment illustrated in Figure 8, each wing 182, 184 extends laterally outwardly from the lateral surfaces 142, 144, respectively, and has a laterally enlarged portion 186, a tapered front portion 188 and outer edge 190 extended between them. In the illustrated embodiment, and while having sufficient force to serve the purpose for which it is designed, each projection or flange 182, 184 has a relatively narrow vertical width, especially towards the front end thereof to promote penetration to ground according to the tooth is activated and moves horizontally on the ground. Preferably, each wing 182, 184 has a rear longitudinal sweep design for a greater portion of the length of the tooth 122 between the front and rear ends 136 and 134, respectively, thereof. That is, in a manner shown in Figure 8, each wing 182, 184 is designed to have a rear sweep configuration for more than one half of the total length of the tooth, so that the excavating tooth 122 or grounding tooth has a ground penetration zone gradually widened to initially fracture the soil taken up by the tooth in advance before the tray edge. As described above with respect to the excavating tooth 22, the outer edge 190 of each wing 182, 184 may have different designs along its length, without departing from the scope and spirit of the invention. In the embodiment shown in Figure 8, an edge 190 preferably has a stepped profile configuration between the opposite ends of each wing 182, 184. In the illustrated form, the rear portion of the edge 190 of each wing 182, 184 preferably, it extends in a relationship generally parallel to the centerline axis 138 of the digging tooth 122 by a longitudinal distance ranging from about one third to one half of the total distance between the ends 134 and 136 of the digging tooth 122. Then, the outer flange edge 190 converges laterally towards the central axis 138 of the tooth. Notably, the edge portion 190 extended along the laterally tapered portion 188 of each flange 182, 184 extends in a generally parallel relationship relative to the lateral surface of the tooth 122, from which the flange extends. lateral shape. As such and for a greater portion of the length of the outer edge 190, the flange edges of the extended laterally adjacent excavating tooth form an angle to each other. It goes without saying that the external profile of the wings 182, 184, which form a wing structure 180 preferably, provide the winged tooth 122 with the dynamic design or rear sweep that promotes tooth movement 22 with wings across the earth. As shown in Figure 10, a rear portion of each flange 182, 184 extending laterally from a respective lateral surface on the excavating tooth 122, has a first upper or flat surface 192 and a second lower or flat surface 194 , extended towards the outer edge 190. The surface 192 of each flange 182, 184 extends in a generally parallel fashion to the cutter edge 146 (Figure 8) at the forward end 136 of the digging tooth. The upper and lower surfaces 192 and 194, respectively, of each wing or projection 182, 184 are disposed between and in a different relationship to the flat with the upper and lower surface 130, 132 respectively on the excavating tooth 122. In a preferred way, each projection 182, 184 extends laterally outwardly from an area on the respective lateral surface of the tooth 122 disposed approximately halfway between the upper and lower surfaces 130, 132, respectively, of the tooth 122. That edge section 190 exterior near the back of each wing, and as shown in Figure 10, is preferably configured to promote the capture of particulate material between the flanges of the adjacent lateral tooth 22 and the tray edge to promote the protection of the exposed portion of the tray edge. In one embodiment shown, the remaining linear edge portion of each wing 182, 184 is preferably designed to promote ground penetration of tooth 122. That is, the lateral end of each wing 182, 184 preferably, is provided with first and second edges 196 and 198 bevelled, respectively, angled or converging with each other to provide the remaining edge portion of each wing 182, 184 with a razor-like configuration or sharp, which promotes the ability of each wing 182, 184 to slide, penetrate and fracture the ground before the guide edge 14 of the tray. Typically, a conventional adapter 120, illustrated in combination with the excavating tooth 122 also defines a through hole 129 disposed generally horizontally (Figure 8) to accommodate a longitudinal portion of the retention apparatus 124 used to couple the adapter 120 and the tooth 122 in a operational combination. The digging tooth 122 also has a through hole defined by a pair of openings 154, 156 aligned along the horizontal axis 158 (Figure 8) extended generally normal to the shaft 138 and positioned to cooperate with the opening or hole 129 in the adapter for accommodating the retention apparatus 124 which generally passes horizontally therethrough. In the embodiment illustrated in Figures 8 and 11, and mainly because the wings 182, 184 preferably extend laterally outwardly from an area on the lateral surfaces 142, 144 arranged approximately halfway between the surfaces 130. and upper and lower 132 (Figure 9) of the excavating tooth, the wings 182 and 184 on the excavating tooth 122 also define a pair of open channels 183, 185, respectively. The channels 183, 185 on the wings 182, 184, respectively, each have a U-shaped cross-sectional configuration that opens toward one of the upper and lower surfaces 192 and 194, respectively, and toward the outer edge 190 of the respective wings 182, 184. As shown in Figures 7 and 11, the open channels 183 and 185 defined by the wing structure 180 on the excavator tooth 122 are arranged in a generally axial alignment with each other, and with respect to the axis 158 of the openings 154, 156 in the excavating tooth 122. To expedite and thus improve the method for coupling the adapter 120 and the excavating tooth 122 in an operative combination with each other, with the use of the holding apparatus 124, the channels 183, 185 in the wings 182, 184 are configured to nest, support and guide the retention apparatus 124 without considering its particular design, when the adapter 120 and the excavating tooth 122 are to be joined in a combination or each other. Some operators prefer to use a flexible pin retainer 60 (Figure 5) to operatively secure the adapter 120 and the tooth 122 in an operative combination with each other. As such and to expedite and therefore expedite the procedure for coupling the adapter 120 and the excavating tooth 122 in an operative combination with each other with the use of a flexible bolt retainer 60, an area arranged close to each opening 154, 156 of tooth is configured to impart compression and as the flexible bolt retainer 60 is inserted into position to hold the adapter 120 and tooth 122 in operative combination with each other. In a preferred form, the channels 183, 185 in the excavating tooth 122 are mirror images of each other. This is why only a description of the channel 183 is provided. As shown in Figures 11 and 12, each open channel 183/185 includes an elongated cam surface 187 extended from an open end of the channel, disposed adjacent to the outer edge 190 of the respective wing, and towards a projection 189 disposed between the open end of the channel and in the respective opening or opening in the opening of the tooth 122 for the blind cavity 150. That is, the radial projection 189 is arranged to radially narrow the size of the passage through which the flexible bolt retainer 60 travels or passes along its path to the respective opening or hole in the side of the excavating tooth 122. With such design, the inlet end of each channel 183/185 widens to the end of the respective channel disposed near the outer edge of the wing or projection. In addition to producing the benefits when using a flexible pin retainer, the tapered design of each channel also prevents solids from entering the holding apparatus 124, regardless of the e used. In addition, the tapered design of each channel allows solids trapped in the channel to be easily released from it when the retention apparatus is driven in an outward direction, in order to provide a self-cleaning function. In addition, the tapered design of each channel facilitates handling as the retention apparatus is inserted and removed from the operative association with the adapter and the tooth. This advantage is of particular importance when considering the angle associated with corner excavator tooth arrangements. As shown in Figure 13, as the retainer 60 is driven along its path to the respective hole in the side of the digging tooth 122, the cam surface 187 of the respective channel 183/185 narrows the passage of the pin of the cam. retention along the passage, the cam surface 187 engages the beveled end portion 65 of the flexible pin 60, which causes the pin half 62 to move toward the pin half 64 by compressing the elastomeric material 66 , which reduces the width of the elliptical seal 60. As shown in Figure 14, and as the retainer 60 continues along the linear path to the hole 129 in the adapter 120, the beveled end portion 65 of the flexible pin retainer 60 engages and moves beyond the Outgoing 189 radial. As the flexible bolt 60 moves further, the radial projection 189 causes another radially inwardly directed movement of the bolt half 62 toward the bolt half 64 and further compression of the elastomeric material 66, whereby the width of the bolt is further reduced. Bolt 60 flexible. As will be appreciated, the reduction of the width of the flexible bolt 60 facilitates the entry of the end of the flexible bolt 60 into the hole 129 of the adapter 120. In a preferred embodiment, the area arranged close to each Tooth opening 154, 156 (Figure 1) is also configured to prevent inadvertent axial displacement of the holding apparatus 124 relative to the adapter. 20 and with the excavating tooth 122 after the insertion of the holding apparatus 124 in an operative combination therewith. Figure 15 shows the flexible bolt 60 as fully inserted in operative combination with the adapter 120 and the excavating tooth 122. Notably, the portion of the radial projection 189 extended toward the opening or hole 154, 156 on the lateral surface of the tooth 122 is configured with an inclined surface 191 disposed linearly from the bevelled end portion 65 in the flexible pin retention apparatus 60 after the flexible pin 60 is fully inserted in an operative combination with the adapter 120 and the excavating tooth 122. As such, and in case the flexible bolt 60 moves linearly during the operation of the excavating tooth assembly, the beveled end portion 65 in the flexible bolt retaining apparatus 60 will be butted against the surface 191 on the radial projection 189 which will also prevent any inadvertent linear movement or displacement of the flexible pin 60 relative to the 120 or to the digging tooth 122. Figures 8 to 16 illustrate how the channels 183, 185 protect the free ends of the extended retention apparatus 124 beyond the opposite side surfaces of the digging tooth 122. That is, the configuration of wing structure 180 to extend from an area approximately halfway between the upper and lower surfaces 130, 132 (Figure 16) of the excavating tooth 122, allows the holding apparatus 124 to be operatively incorporated into the respective wing channel in a separate relation of the wing surface 192, 194 defining the channel and serving to deflect the introduction of materials and prevent impact with the free ends of the retaining apparatus 24 securely housed within the upper open channels 183, 185, and thus outside of direct contact with the materials that move there. In addition, the particulate materials can be trapped within each channel in the excavating tooth, which also protects the free ends of the retention apparatus 124 extended from the opposing side surfaces of the tooth 122, and protects from the detachment of the pin and the forces exerted on it during the excavation operation. Each channel 183, 185 provided in the wing structure 180, preferably, opens to an upper surface of a respective wing 182, 184. To maintain the structural strength together with the full length of each wing 182, 184 of the wing structure 180 and as shown by the example of Figures 10 and 16, the excavating tooth 122 is provided with a side or rib projection 193 which is in an extended area directly below each channel 183, 185, and which is configured so as not to affect the ability of the tooth to move horizontally on the ground. To adapt a position of the corner adapter in the bucket, the wing structure in the excavator tooth can be configured with a unique wing design. With respect to this, Figures 17 and 18 illustrate an alternative form for the excavating tooth that can be easily used in combination with a position of the corner adapter. This alternative form of the excavating tooth is generally indicated with the reference number 222 in Figures 17 and 18. The elements of this alternative excavating tooth which are functionally analogous to the components described above with respect to the excavating tooth 22 are indicated by reference numerals. identical to those listed above with the exception of this embodiment using reference numbers in series of 200. As shown in Figure 17, the excavating tooth 222 is configured to be used with an adapter 220 with a nose portion 228 extended forwardly from an edge of an implement or bucket. The tooth 222 is operatively connected to the adapter 220 with the use of a conventional retention apparatus (not shown). The tooth 222 has a generally elongated wedge-shaped configuration that includes an upper surface 230 and a lower surface 232. The upper surface 230 or first surface slopes downwardly from a rearward end 234 to the forward end 236 of the tooth 222. To promote the ground fracture as the tooth moves therein, the tooth 222 edge 246 cutter, extended in shape crosswise through the front end 236 thereof. The second surface 232 or The lower surface (Figure 18) is inclined upwardly between the ends 234 and 236 of the tooth 222. Preferably, the ends 234 and 236 of the tooth 222 are aligned along a central axis 238. The ground engaging tooth 222 also includes a pair of side surfaces 242 and 244 laterally spaced apart. The excavating tooth 222 also includes a ground penetrating edge or cutter 246 extended transversely through the forward end 236 thereof. To allow the tooth 222 to be mounted in an operative combination with the adapter 220, blind cavity or bushing 250 is defined and opened to the rear end 234 of each tooth 222. As will be appreciated, the defined cavity or bushing 250 opens to the rear portion 234 of the excavating tooth 222 has a cross-sectional configuration that is complemented by the cross-sectional configuration of the nose portion 228 of the adapter 220 whereby the adapter 220 and the excavating tooth 222 are allowed to assemble in an operational combination with each other. That is, the cavity 250 defined by the tooth 222 may have a generally diamond-like cross section, a generally rectangular cross-sectional configuration, or any other appropriate cross-sectional configuration without departing from the scope and spirit of the invention. In accordance with the present invention and as shown a wing structure 280 is provided on the ground engaging tooth 222. In the illustrated embodiment, wing structure 280 includes a single wing 284 extended outwardly in the form lateral from the lateral surface 244 of the tooth 222, approximately halfway between the upper and lower surfaces 230 and 232, respectively. In the same sense, the wing structure 280 serves to protect the ground coupling components arranged rearwardly at the rear end 234 of the excavating tooth 222 against wear. Also, and although only one wing 284 is provided, such a wing serves to gradually widen the ground penetration zone provided by the excavating tooth 222. The widening of the penetration zone for the excavating tooth also serves to improve the penetration capacity of the bowl edge into the ground while reducing the energy required to carry out such purposes. The wing 284 preferably is formed integrally with the rest of the excavating tooth 222. In a preferred form, the wing 284 is arranged on the tooth 222 in a symmetrical relationship with respect to the central axis 238 whereby it improves the versatility of the tooth by allowing it to be inverted about the central axis 238 and therefore, it serves in any corner adapter for bucket. In the embodiment illustrated in Figure 17, the wing 284 has a rear portion 286 laterally enlarged, a front portion 288 narrowed laterally with an outer edge 290 extended therebetween. In the illustrated mode, and although it has sufficient strength to serve the purpose for which it was designed, the projection or wing 284 has a relatively narrow vertical dimension to promote ground penetration of the tooth moves and moves horizontally through the earth. Preferably, the wing 284 has a rear longitudinal sweep design for a greater portion of the length of the tooth 222 between the front and rear ends 236 and 234, respectively, thereof. That is, in a manner shown in Figure 17, the wing 284 is designed to have a rear sweep configuration for more than one half of the total length of the tooth, so that the tooth 222 has an enlarged ground penetration zone. gradually to initially fracture the soil taken by tooth 222 in advance before the bowl edge. As described above with respect to the tooth 22, the outer edge 290 of the wing 284 may have different designs along its length, without departing from the scope and spirit of the invention. As shown in Figure 17, a wing edge 290 has a stepped profile configuration between the opposite ends of the wing 284. The rear portion of the outer edge 290 of the wing 284 preferably extends in a relationship generally parallel to the axis 238. of the digging tooth 222 by a longitudinal distance varying between about one third and a half of the total distance between the ends 234 and 236 of the digging tooth 222. Then, the flange edge 290 converges laterally or forms an angle to the axis 238 tooth center. Notably, the flange portion 290 of flange extending longitudinally along the laterally tapered portion 288 of the flange 282 extends into a generally parallel relationship with respect to the lateral surface 244 of the tooth 222, from which the wing 284 extends laterally. As such, the preferred inclined configuration of the wing edge 290 provides the tooth 222 with the dynamic or rear sweep design that promotes the movement of the winged tooth 22 across the ground. As shown in Figure 18, a rear portion of the wing 284 extending laterally from a respective lateral surface 244 on the excavating tooth 222, has a first upper or flat surface 292 and a second lower or flat surface 294, extended towards the outer edge 290. The upper surface 292 of the 284 extends generally parallel to the cutting edge 246 at the front end 236 of the digging tooth. That section of the edge 290 linearly near the rear of the wing 284, and as shown in Figure 18, is preferably configured to promote the capture of particulate material between the flanges of the lateral adjacent tooth and the bowl edge. In a embodiment shown in Figures 17 and 18, the remaining linear edge portion of the flange 284 is preferably designed to promote ground penetration of the tooth 222. That is, the lateral end of the 284 preferably is provided with first and second edges 296 and 298 bevelled, respectively, at an angle or converging with respect to each other to provide the remaining portion of the edge of the wing 284 with a razor-like or sharp configuration, which promotes the ability of the wing 284 to slide, penetrate and fracture the soil before the guide edge of the bucket. Figures 19 and 20 illustrate a mining tooth generally designated with the reference number 322. The elements of this alternative tooth design that are functionally analogous to the components described above with respect to the tooth 22 are indicated with reference numbers identical to those mentioned above, with the exception that this modality uses reference numbers in series of 300. As The mining tooth 322 is shown to have a generally elongated wedge-shaped configuration that includes an upper surface 330 and a lower surface 332. The upper surface 330 slopes down from a rear end 334 toward the forward end 336 of the tooth 322. The lower surface 332 slopes upwardly between the ends 334 and 336, respectively. In one form, the tooth 322 also includes a cutting edge 346 extended transversely through the forward end of the tooth 322. Preferably, the ends 334, 336 of the tooth are aligned along the central axis 338. Excavator 322 or ground engaging tooth also includes a pair of surfaces 342 and 344. To allow tooth 322 to be mounted in an operative combination with an adapter or support (not shown), a blind cavity or pouch 350 is defined and opens to the open end 334 of the tooth 322. As will be appreciated, the cavity 350, defined and opening to the rear portion 334 of the excavating tooth 322, has a configuration in section cross section that is complemented by the cross-sectional configuration of the nose portion of the adapter, which allows the adapter 320 and the excavator tooth 322 to be assembled into an operative combination. That is, the cavity 350 defined by the tooth 322 may have a rhombus cross-sectional configuration, a generally rectangular cross-sectional configuration or any appropriate cross-sectional configuration without departing from the spirit and scope of the invention. As shown, the mining tooth 322 is provided with a wing structure 380. In this embodiment, the wing structure 380 includes a single wing 384 extending outward longitudinally projecting vertically from the upper surface 330 of the digging tooth 322, approximately halfway between the lateral surfaces 342 and 344, respectively and in an extended direction generally normal to the edge 346 transverse cutter at the front end 336 of the tooth. In the illustrated embodiment, and although it has sufficient strength to serve the purpose for which it is designed, the projection or wing 384 has a relatively narrow lateral width to promote penetration to land as the tooth moves vertically and horizontally. By providing the wing structure 380 on the tooth 322, it is expected to extend the service life of the wear components, ie, the wear cap, and etc., arranged in an operational combination with an excavator tooth system of two parts of which, tooth 322 is configured to serve as an integral part.

The wing 384 of the structure, preferably, is formed integrally with the remainder of the excavating tooth 322. In the manner illustrated in Figures 19 and 20, the wing 384 has a rear vertical widened portion 386, a narrowed forward portion 388 in vertical shape with an outer edge 390 extended therebetween. Preferably, the wing 384 progressively increases in height for a greater portion of the length of the tooth 322 between the rear and front ends 336 and 334, respectively, thereof. That is, in the manner shown in Figure 19, the wing 384 increases in height by more than half of the total length of the tooth 322. In the embodiment shown, the linear edge portion 390 of wing 384 is preferably designed to promote ground penetration of the tooth 322. That is, the vertical end of the wing 384 is preferably provided with a first and second edges 396 and 398 bevelled, respectively, at an angle or converging relative to each other to provide the edge portion of wing 384 with a knife-like or sharp configuration, whereby the ability of wing 384 to slide, penetrate and fracture the earth as tooth 322 moves horizontally and vertically is promoted. Figures 21, 22 and 23 illustrate a two-part tooth assembly that includes another tooth shape designed to protect a worn wear component at the rear of the tooth. In this mode, the tooth is designed to improve the wear characteristics of a portion of ground coupling of a side wall 11 in a trough 10 or its like. The tooth illustrated in Figures 21, 22 and 23 is generally designated with the reference number 422. The elements of this alternative design of the excavating tooth that are functionally analogous to the components described above, related to the excavating tooth 22, are indicated with an identical reference number, with the exception that this modality uses reference numbers in series of 400. As shown in Figures 21 and 22, the tooth 422 is configured to be used with a corner adapter 420 having a nose portion 428 extended forwardly from an edge 14 of an implement or trough 10, as described above. The excavating tooth 422 is operatively connected to the adapter 420 with the use of a conventional retention apparatus 424. The digging tooth 422 has a generally elongated wedge-shaped configuration that includes a first surface 430 or upper surface and a second surface 432 or lower surface. The top surface 430 slopes downward from the rear end 434 and towards the front end 436 of the tooth 422. The bottom surface 432 of the tooth 422 is tilted upwardly between the front and rear ends 434 and 436, respectively. Preferably, the ends 434 and 436 of the tooth are aligned along a central axis 438. As shown in Figure 23, the tooth 422 also includes laterally separated surfaces 442 and 444. With reference again to Figure 21, the tooth 422 also includes a cutting edge or ground penetrating edge 446 extending transversely through the forward end 436 thereof. To allow the tooth 422 to be mounted in an operative combination with the corner adapter or bracket 420, a blind cavity or socket 450 is defined and opened towards the rear end 434 of the tooth 422. As will be appreciated, the cavity 450, defined and opening to the rear end 434 of the excavating tooth 422 has a cross-sectional configuration that is complemented by the cross-section of the nose portion of the adapter, whereby it allows the adapter 420 and the excavating tooth 422 to be assembled in a operational combination. That is, the cavity 450 defined by the tooth 422 may have a rhombus cross-sectional configuration, a generally rectangular cross-sectional configuration, or other appropriate cross-sectional configuration without departing from the spirit and scope of the invention. In accordance with the present invention, and as shown, the tooth 422 includes a projection 484 longitudinally extended and extended vertically from the upper surface 430 of the excavating tooth 422 in an extended direction generally normal to the edge 446 at the end 436 front of the tooth 422. In the embodiment illustrated in Figures 21, 22 and 23, the projection 484 is displaced from the upper surface 430 of the tooth 422, so that the projection 484 is disposed closer to the lateral surface 442 than to the surface 444 lateral.

As will be appreciated, providing the projection 484 near the side surface 442 on the excavating tooth serves to protect and therefore prolong the life of the wear component, ie, the side wall 11 of the tray, arranged rearwardly. of the excavating tooth 422 in the two-part excavating tooth system. Preferably, the projection 484 is formed integral with the remainder of the tooth 422. In a preferred form, illustrated in Figure 21, the projection 484 has a rear portion 486 vertically enlarged, a front portion 488 narrowed vertically with an outer edge 490 extended between them. Preferably, the projection 484 progressively increases in height for a greater portion of the length of the tooth 422 between the front and rear ends 436 and 434, respectively, thereof. That is, in the manner shown in Figure 18, projection 484 continues to increase in height for more than half the total length of tooth 422. In the illustrated embodiment and while having sufficient strength to serve the purpose for which it is Designed, the 484 projection has a relatively narrow lateral width to promote penetration to the ground as the tooth moves vertically and horizontally. In the embodiment shown, the linear edge portion of projection 484 is preferably designed to promote ground penetration of tooth 422. That is, the vertical end edge of projection 484 is preferably provided with first and second projections. edges 496 and 498 beveled, respectively, in angle or converging one relative to the other, to provide the edge portion of the projection 484 with a razor or sharp type configuration, which promotes the penetration ability of the projection 484 to slide, penetrate and fracture the ground as the tooth 422 moves horizontally and vertically on the ground during the operation. Figures 24 and 25 illustrate another form of tooth that is part of a two part excavating tooth system. This alternative form of the excavating tooth is generally indicated with the reference number 522 in Figures 24 and 25. The elements of this alternative excavating tooth design which are functionally analogous to the components described above, related to the excavating tooth 22 are marked with identical reference number indicated above with respect to tooth 22, with the exception that this embodiment uses reference numbers in series of 500. As shown in Figure 24, the excavating tooth 522 is configured to be used with a corner adapter 520 having a nose portion 528 extended forward from an edge of an implement or bucket 10, as described above. The excavating tooth 522 is operatively connected to the adapter 520 with the use of a conventional retention apparatus 524. The digging tooth 522 has a generally elongated wedge-shaped configuration that includes a surface 530 and a lower surface 532. The upper surface 530 slopes towards down from the rear end 534 and to the forward end 536 of the tooth 522. The lower surface 532 is inclined upwardly between the end 534 and the forward end 536 of the tooth 522. Preferably, the ends 534 and 536 of the tooth are aligned along a central axis 538. The ground engaging tooth 522 also includes a pair of laterally spaced surfaces 542 and 544. The excavating tooth 522 also includes a cutting or ground penetrating edge 546 extending transversely through the forward end 536 thereof. To allow the tooth 522 to be mounted in an operative combination with the adapter 520, a blind cavity or socket 550 is defined and opened towards the rear end 534 of the tooth 522. As will be appreciated, the cavity 550, defined and defined open to end 534 of tooth 522 has a cross-sectional configuration that is complemented by the cross-sectional configuration of the nose portion of adapter 520, thereby enabling adapter 520 and digger tooth 522 to be assembled in an operative combination. That is, the cavity 550 defined by the excavating tooth 522 can be assembled into an operational combination. That is, the cavity 550 defined by the tooth 522 can have a rhombus cross-sectional configuration, a generally rectangular cross-sectional configuration, or other appropriate cross-sectional configuration without departing from the spirit and scope of the invention. In accordance with the present invention, and as shown in Figures 24 and 25, the tooth 522 includes a wing structure 580 including first and second wing structures or lateral projections 582 and 584 extending outwardly from the lateral surfaces 542 and 544, respectively, of the excavating tooth 522 about halfway between the upper and lower surfaces 530 and 532, respectively, In the above-described sense, the wing structure 580 including these projections 582, 584 serves to protect the ground engaging components disposed rearwardly of the rear end 536 of the excavator tooth 522 against wear. In addition, the wing structure 580 serves to widen the penetration zone to ground provided by the excavating tooth 522. The widening of the penetration zone for the tooth also improves the penetration capacity to the ground of the bowl edge while reducing the energy required for such purposes. Each wing or projection 582, 584 comprises at least two longitudinally spaced sections. That is, the flange 582 includes two laterally extending sections 582A and 582B disposed towards the same side of the central axis one relative to the other and preferably, arranged in front and behind and in a spaced relation to each other. Similarly, the flange 584 includes two sections 584A and 584B preferably laterally extended, arranged in front and behind and longitudinally spaced from each other. The front and rear sections of each wing or lateral projection 582, 584, preferably, are formed integral with the rest of the Excavator tooth 522. In the embodiment illustrated in Figure 24, the longitudinally spaced front and rear sections of each wing 582, 584 are mirror images of each other. Accordingly, only the longitudinally separated front and rear projections or sections 582A and 582B comprising a flange 582 will be described in detail. The sections 582A and 582B of the flange 582 extend laterally outwardly from the lateral surface 542 of the tooth 522 about half the distance between the upper and lower surfaces 530 and 532 of the excavating tooth 522. In the embodiment illustrated and while there is sufficient strength to serve the purpose for which it is designed, each flange section 582A and 582B comprising a flange 582 has a relatively narrow vertical width, especially towards the front end thereof, to promote penetration to ground as the tooth is driven and moved horizontally on the ground. In the illustrated embodiment, each of the wing section 582B disposed rearwardly of the wing structure 580 has a flanged portion 586B laterally extended laterally from the side surface 542 of the tooth to a lateral width greater than the portion 586A tapered laterally of wing section 582A disposed forward of the same wing structure. Each section 582A and 582B in the flange 582 has a portion 590A and 590B of outer edge extended longitudinally, respectively. Remarkably, however, in width and cumulative effect of the sections 582A and 582B is intended and is equivalent to the lateral width of a wing 182 comparable in the above described excavating tooth illustrated in the embodiments of Figures 8 through 12. In addition, the cumulative width and effect of sections 582A and 582B Wing wing 582 together with the cumulative width and effect of wing wing sections 584A and 584B has the purpose and is equivalent to the cumulative lateral width of wings 182 and 184 comparable in the excavating tooth patterns shown in the Figures 8 to 12. As described with respect to the excavating tooth 22, the outer edge portions 590A and 590B associated with each wing section 582A and 582B of a respective wing 582 may have different designs along their length without departing from the spirit and scope of the invention. For example, in the embodiment shown in Figure 24, the outer edge portion 590A of the wing section 582A preferably extends a smaller lateral distance away from the central axis 538 of the excavating tooth 522 than the portion 590B extends. of outer edge of section 582B. In the embodiment illustrated in Figure 24, the outer edge portion 590A of the wing section 582A extends in a generally parallel relationship to the center line 538 of the excavating tooth 522 by a longitudinal distance that is between one-third and one third. means of the total distance between the ends 534 and 536 of the excavating tooth 122. However, it will be appreciated that the outer edge portion 590B of the wing section 582B can be configured with a design of rear sweep without departing from the scope and spirit of the invention. In the exemplary embodiment shown in Figure 24, the rear portion of the outer edge portion 590B of the wing section 582B preferably extends in a generally parallel relationship to the centerline axis 538 of the excavator tooth 522 over a longitudinal distance which varies between a third and a half of the total distance between the ends 534 and 536 of the excavating tooth 522. In the preferred embodiment, the outer edge portion 590B then converges laterally or angled towards the respective lateral surface of the tooth 522. from which wing section 583B extends. However, other profiles or designs may also function for the rear wing section on opposite sides of the tooth 522 without departing from the spirit and scope of the invention. Referring now to Figure 25, the wing section disposed rearwardly of each flange 582, 584 extended outwardly from the respective side surface of the tooth 522, has a generally flat upper surface 592 extended toward the outer edge portion 590B. The upper surface 592 of each wing extends in an extended direction generally parallel to the edge 546 at the leading end 536 of the digging tooth. In addition, the longitudinal section of the outer edge portion 590B of the wing section 582B linearly close to the rear of the wing 582, preferably, is configured to promote the capture of particulate material between the wing edges of the laterally adjacent teeth and the bowl edge. In the embodiment shown in Figure 24, the remaining edge portion of each wing section disposed rearwardly of wings 582, 584 is preferably designed to promote ground penetration of tooth 522. That is, the remainder of the end of each wing section disposed rearwardly of each wing structure 580, preferably, is provided with first and second beveled edges similar to edges 596 and 598. Similarly, outer edge portion 590A in each front wing section of a wing structure, in the same way, have edges that converge at an angle to provide the forwardly disposed sections of the wing structure 580 with a razor-like or tapered configuration, which promotes the capacity of the wing structure 580, to slide, penetrate and fracture the soil before the guide edge of the bucket. In the embodiment illustrated in Figure 24, and because the sections 582B and 584B of wings or projections 582 and 584, respectively, extend laterally outward from an area on the lateral surfaces 542, 544 arranged approximately in half between the upper and lower surfaces 530 and 532 of the excavating tooth, the wing sections 582B and 584B in the excavating tooth 522 also define a pair of open channels 583, 585, essentially similar to the channels 183 and 185 described above. In accordance with this, there is no need to provide more details for a full understanding of it. In addition, the excavating tooth 522 can be configured to effect compression in the flexible pin-type retention apparatus used to releasably secure the adapter 520 and the excavating tooth 522 together as described in detail above. The structure for exerting compression of a flexible pin-type retention apparatus can be essentially similar to the structure described with respect to the tooth 122 and therefore, no further detail is needed for a complete understanding of it. In addition, the excavating tooth 522 can be configured to prevent inadvertent lateral displacement of the retention apparatus. The structure for preventing inadvertent lateral displacement of the retention apparatus can be essentially similar to the structure described above with respect to the tooth 122 and thus, no further detail needs to be provided for full understanding. Figures 26 and 27 illustrate another alternative form of a tooth that is part of a two part excavating tooth system. This alternative form of the excavating tooth is generally indicated with the reference number 622 in Figures 26 and 27. The elements of this alternative excavating tooth which are functionally analogous to the components described above with respect to the excavating tooth 22 are indicated by numbers of reference identical to those previously used in relation to tooth 22 with the exception that this modality uses reference numbers in series of 600.

As shown in Figure 26, an excavating tooth 622 is configured to be used with an adapter 620 with a nose portion 628 extended forwardly from an edge of an implement or bucket, as described above. The tooth 622 is operatively connected to the adapter 520 with the use of a conventional retention apparatus 624, which passes through the holes 654, 656 on the tooth 622 and through the hole 629 in the adapter 620. Remarkably, holes 654, 656 on tooth 622 define an axis 658. Excavator tooth 622 has a generally elongated wedge-shaped configuration that includes an upper surface 630 and a lower surface 632. The upper surface 630 from a rear end 634 towards the forward end 636 of the tooth 622. The surface 632 slopes upwardly from the rear end 634 and towards the forward end 636 of the tooth 622. Preferably, the ends 634 and 636 of the tooth they are aligned along a central axis 638. The tooth 622 or ground coupling also includes a pair of side surfaces 642 and 644 separated laterally. The digging tooth 622 also includes a ground penetrating edge or cutter 646 extending transversely through the forward end 636 thereof. To allow the tooth 622 to be mounted in an operative combination with the adapter 620, blind cavity or bushing 650 is defined and opened to the rear end 634 of each tooth 622. As will be appreciated, the cavity 650 defined to open to the back part 634 of excavator tooth 622, it has a cross-sectional configuration that is complemented by the cross-sectional configuration of the nose portion of the adapter 620 whereby the adapter 620 and the excavator tooth 622 are allowed to be assembled in an operative combination with each other. That is, the cavity 650 defined by the tooth 622 may have a generally diamond-like cross section, a generally rectangular cross-sectional configuration, or any other appropriate cross-sectional configuration without departing from the scope and spirit of the invention. In accordance with the present invention and as shown in Figures 26 and 27, the excavating tooth 622 also includes a wing structure 680 that includes first and second wing structures or lateral projections 682 and 684 extended laterally from surfaces 642 and 644, respectively, and are formed integrally with the excavating tooth 622. In the manner described above, the lateral wing structures or projections 682 and 684, respectively, comprise a wing structure 680 having a rear widened portion 686 that serves to protect the wings. ground coupling components disposed rearwardly of the backside of the excavating tooth 622. The widening of the penetration zone for the excavating tooth also improves the penetration capacity to the ground of the tray edge while reducing the energy required for such purposes. The wing or projection 682 has upper and lower surfaces 692 and 694 arranged horizontally and generally flat, which they extend from the lateral surface 642 of the excavating tooth 622 and towards the outer edge 690. Similarly, the wing or projection 684 has upper and lower surfaces 692 and 694 disposed generally planar and horizontal, respectively, extended from the lateral surface 644 of the excavating tooth 622 and towards the outer edge 690. The outer edge 690 extends forwardly from the portion 686 enlarged laterally in each projection 682, 684, and converges towards the central axis 638 of the excavating tooth, which provides the excavating tooth with a progressively enlarged ground penetrating area for facilitate the penetration to the ground of the tray edge. In addition, the greater length of the outer edge 690 provided in each extension or projection 682, 684 is preferably bevelled to improve the penetration of the excavating tooth as it is forcefully activated in the ground. As shown, each projection 682, 684 has a back edge 685. To promote the insertion of the retainer apparatus 624 into an operative combination of the adapter 620 and the digging tooth 622, the rear edge 685 of each side projection 682, 684 is disposed in front of the axis 658 defined by the hole 654, 656 in the excavating tooth 622. Figures 28, 29 and 30 illustrate another form of a tooth that is part of a two part excavating tooth system. This alternative form of the excavating tooth is usually indicated with the reference number 722 in Figures 28 through 30. The elements of this alternative excavating tooth that are functionally analogous to the components described above with respect to the excavating tooth 22 are indicated with reference numerals identical to those mentioned with respect to tooth 22 except that this modality uses reference numbers in series of 700. As shown in Figures 28 and 30, the excavating tooth 722 is configured to be used with an adapter 720 having a nose portion 728 extended forwardly from the edge of an implement or bucket, as described above. The excavating tooth 722 is operatively connected to the adapter 720 through the use of a conventional retention apparatus 724 that pa through the holes 754, 756 in the tooth 722 and through the hole 729 in the adapter 720. Remarkably, holes 754, 756 on tooth 722 define an axis 758. Excavator tooth 722 has a generally elongated wedge-shaped configuration that includes an upper surface 730 and a lower surface 732. The upper surface 730 tilts towards the rear end 734 and towards the forward end 736 of the tooth 722. The lower surface 732 tilts up from the rear end 734 and towards the front end 736 of the tooth 722. Preferably, the ends 734 , 736 of the tooth are aligned along a central axis 738. The excavator tooth 722 or ground-engaging tooth also includes a pair of side surfaces 742 and 744 laterally spaced apart. The excavating tooth 722 also includes a border of Ground penetration or cutter 746 extended transversely through the front end 736 thereof. To allow the tooth 722 to be mounted in an operative combination with the adapter 720, a blind cavity or bushing 750 is defined and opened to the rear end 734 of each tooth 722. As will be appreciated, the defined cavity 750 opens to the rear portion 734 of the excavating tooth 722, has a cross-sectional configuration that is complemented by the cross-sectional configuration of the nose portion of the adapter 720 whereby the adapter 720 and the excavating tooth 722 are allowed to be abled in a operational combination with each other. That is, the cavity 750 defined by the tooth 722 can have a generally rhombus-like cross section, a generally rectangular cross-sectional configuration, or any other appropriate cross-sectional configuration without departing from the scope and spirit of the invention. In accordance with the present invention and as shown in Figures 28 through 30, the excavating tooth 722 also includes a wing structure 780 that includes a first and second wing structures or side projections 782 and 784 extended laterally from the surfaces 742 and 744, respectively and formed integrally with the excavating tooth 722 In the manner described above, the wing structures or side projections 782 and 784, respectively, comprise a wing structure 780 that widens the penetration zone for the excavating tooth, which also improves the penetration capacity of the tooth. bucket edge ground while reducing the energy required for such purposes. As shown, each projection 782, 784 extends forwardly of the rear portion 734 of the digging tooth and has a leading edge 785. To promote insertion of the retention apparatus 724 into an operative combination of the adapter 720 and the digging tooth 722, the front edge 785 of each lateral projection 782, 784 is disposed behind the axis 758 defined by the hole 754, 756 in the excavating tooth 722. As can be seen, and without departing from the spirit and scope of the present invention, the principles of The present invention applies equally to an excavating tooth of a one-piece or unitary design. Figures 31 and 32 illustrate a one-piece or unitary excavating tooth. This alternative form of the excavating tooth is generally indicated with the reference number 822 in Figures 31 and 32. The elements of the excavating tooth that are functionally analogous to the components described above with respect to the excavating tooth 22 are indicated with reference numerals identical to the aforementioned with respect to the excavating tooth 22, with the exception that this embodiment uses reference numbers in series of 800. As shown, the excavating tooth 822 includes a portion 820A of the adapter and a portion 822A of the excavating tooth formed as a single piece. The portion 820A of the adapter of the excavator tooth 822 is configured to allow the coupling of the tooth Excavator 822 with the guide edge of the tray or lip, such as the adapter 20 was attached to the tray or lip. The portion 822A of the digging tooth of the digging tooth 822 has a generally elongated wedge configuration that includes an upper surface 830 and a lower surface 832. The upper surface 830 is inclined from a rear end 834 of the portion 822A of the digging tooth and towards the forward end 836 of the portion 822A of the tooth. The lower surface 832 is inclined upwardly from the rear end 834 and toward the front end 836 of the tooth 822. In the illustrated embodiment, the ends 834, 836 as well as the portion 820A of the adapter are aligned along the central axis 838. The portion 822A of the digging tooth of the digging tooth 822 or grounding also includes a pair of separate lateral surfaces 842 and 844. The excavating tooth 822 also includes a ground penetration or cutter edge 846 extended transversely through the forward end 836 thereof. In accordance with the present invention, and as shown in Figures 31 and 32, the tooth 822 also includes a wing structure 880 that includes first and second wing structures or lateral projections 882 and 884 extended outwardly from the surfaces 842 and 844, respectively, and are formed integrally with the portion 820A of the excavating tooth. In the manner described above, the lateral wing structures or projections 882 and 884, respectively, comprise a structure 880 which widens the penetration zone for the excavating tooth, which also improves the ability to penetrate the bucket edge to ground while protecting the cutting edge of the implement against wear. After the tooth incorporating the principles of the invention is operatively coupled with its respective adapters, a lateral spacing of about 1.27 cm to about 1.90 cm is provided between the outer edges of the adjacent flanges in the laterally adjacent excavating tooth. Although much depends on its size, and after the winged tooth is operatively coupled with their respective adapters, the front and rear spacing is approximately 1.27 cm to approximately 10.16 cm provided between the rear end of the excavating tooth and the edge 14 front / guide of the bucket. Such separation prevents incorrect alignment of the adapters relative to the tray edge. Such separation also facilitates the capture of particulate materials between the adjacent excavating tooth and the guide tray edge. Of course and without departing from the spirit and scope of the invention, the wing structure on each tooth may extend rearwardly beyond the rear end of the respective digging tooth and towards the guiding edge of the bucket lip. With the present inven, each time an excavating tooth is replaced, a new edge protection is generated in the lip of the tray, which prolongs its useful life. The structure The wing on the excavating tooth is designed and arranged to protect the ground coupling components arranged rearward from the trailing edge of the excavating or grounding tooth of the wear and to promote penetration to the ground of the trough. Due to the improved ground penetration capabilities offered by the winged tooth, a non-bevelled knife edge will suffice for the bucket, resulting in a more economical and stronger base edge for the bucket. With the present invention, almost the entire guiding lip of the bucket lip is protected against wear by the wing structure on the excavating tooth, which penetrates, fractures and slides in the ground before the bucket edge passes into the bucket. through it. Since the wing structure in the excavating tooth of the present invention serves to penetrate and fracture the soil before the bowl edge moves therein, the savings associated with the purchase of a new cutting edge or the cutting edge can be achieved. potential elimination of the need for hard coating on the hydrocarbon side of the tray edge. In addition, in the embodiment wherein the wing structure in the excavating tooth is arranged generally symmetrically around the central axis of the excavating tooth, such design allows the tooth to be inverted or rotated around a central line to maximize its usefulness. The tooth modalities that define an open channel in one of the generally planar surfaces of the wing structure provide several advantages, especially when a flexible bolt type retention device for coupling the adapter and the excavating tooth in combination with each other. As described above in detail, the design of the digging tooth has open channels that facilitate the insertion of the flexible pin by exerting compression on the width of the flexible pin within the range of about 15% to 40%. Compression in the width of the flexible bolt by approximately 15% to 40% will be especially advantageous in common situations where the holes in the excavating tooth do not line up correctly in the front and rear direction with the opening or hole in the adapter that receives in flexible bolt. In addition, the open channel of at least one of the generally flat upper and lower surfaces of the excavating tooth wing serves a dual purpose. First, the channel serves as a pin holder in a relatively restricted space. Secondly, the sides of the open channel serve as guides for the tool during the installation of the retention apparatus. Those skilled in the art will recognize that the retention bolts for the retention apparatus have multiple lengths. Operators who use longer retention bolts in the conventional excavating tooth face the problem that the ends of the retaining bolt will project from the opposite sides of the excavating tooth and therefore, the bolt can be detached by digging forces. which exposes the bolt. Of course, when the seal detaches inadvertently, it can result in the separation and loss of the Excavator tooth of the two-part system. With a preferred form of the invention, and after the installation of the retainer, the sides of the open channels are wrapped and extend at least partially along the longitudinal end portions of the retainer extended from opposite sides of the retainer. tooth, which protects the free ends of the holding device. In addition, and in another preferred form of the invention, the tooth is configured to provide an additional locking feature to prevent inadvertent linear displacement of the holding apparatus relative to the tooth and adapter, which protects against accidental separation and loss of the tooth. Excavator tooth during the excavation operation. From the above, it can be seen that many changes and modifications can be made without departing from the true scope and novel concept of the present invention. Furthermore, it can be appreciated that the present description is intended to encompass an example of the invention and that it is not intended to limit the present invention to the illustrated embodiment. Better, the description is intended to encompass the appended claims of such modifications and variations that fall within the scope of the claims.

Claims (66)

1. 82 REIVI DICACIONES 1. An excavating client adapted to extend forward of an excavating implement having a transversely extended edge, the excavating tooth defines a longitudinal center line and has a front end portion, with a cutting edge extending therethrough, and a rear end portion configured for engagement with the edge of the implement, the digging tooth also includes divergent upper and lower angled surfaces having opposite side surfaces therein, the digging tooth also includes a wing projecting laterally towards outside from each lateral surface of the tooth, each wing is formed integrally with the rest of the excavating tooth and has upper and lower flat surfaces, each extending in a direction generally parallel to the tray edge through the front end portion of the excavating tooth , the upper and lower surfaces of each wing are arranged between and in a different relationship to the planar relation with respect to the upper and lower surfaces of the excavating tooth and characterized in that each wing has a rearwardly enlarged rear portion, a forwardly narrowed forward portion, and an extended outer edge therebetween to provide the tooth with a progressively enlarged ground fracture zone, whereby sufficient wear protection is added to the edge of the implement. 83 2. The excavating tooth according to claim 1, characterized in that each wing has first and second surfaces that toward the outer edge thereof, converge with each other to provide a cutting edge for each wing. The excavating tooth according to claim 1, characterized in that the rear end portion of the excavating tooth is provided with a blind cavity to receive and accommodate a longitudinal section of a nose portion of an adapter extended from the edge on the implement. of excavation. 4. The excavating tooth according to claim 3, characterized in that the laterally enlarged rear portion of each wing extends outwardly and forwardly from the rear end portion of the tooth. The excavating tooth according to claim 3, characterized in that the blind cavity opens to a rear part of the tooth and has a cross-sectional configuration having a diamond-like configuration for a longitudinal major portion thereof. The excavating tooth according to claim 3, characterized in that it defines an orifice defining an axis, the orifice is opened to the blind cavity defined by the tooth to accommodate at least a portion of a retention apparatus used to secure the releasable form the tooth and the adapter in an operational combination. 7. The excavating tooth in accordance with the claim 84 6, characterized in that each wing in the excavating tooth defines a channel open to one of the upper and lower flat surfaces in each wing and arranged in general alignment with each other and in relation to the axis of the hole to accommodate and align the holding apparatus in relation to to the axis defined by the hole. 8. The excavating tooth in accordance with the claim 7, characterized in that each wing projects laterally outward from an area on a respective lateral surface of the excavating tooth arranged approximately half of the upper and lower surfaces on the excavating tooth, so that the generally flat upper surface at each The wing on the tooth is arranged and configured to protect the ends of the extended retention apparatus further on the opposite lateral surfaces of the excavating tooth. 9. The excavating tooth in accordance with the claim 6, characterized in that the holding apparatus for releasably securing the adapter and the tooth in an operative combination with each other includes an elongate flexible pin retainer, and wherein an excavating tooth area arranged near the hole is configured to impart radial compression to one end of the flexible pin as the flexible pin is inserted in position to hold the tooth and the adapter in an operative combination. The excavating tooth according to claim 6, characterized in that an area of the excavating tooth arranged in a close relationship to the hole is configured to prevent the 85 accidental axial displacement of the holding device in relation to the adapter or tooth. 11. An excavating tooth adapted to extend forward of an excavating implement having a transversely extended edge, the excavating tooth defines a central axis and has a front end portion, with a transverse cutting edge and a rear end portion configured for coupling with the transversely extended edge of the implement, the digging tooth also includes divergent upper and lower angled surfaces having opposing side surfaces therein, the digging tooth also includes a wing structure projecting horizontally and laterally outwardly from an area on one side of the tooth, the wing structure is formed integrally with the rest of the excavating tooth and has upper and lower flat surfaces, the upper and lower surfaces of the wing structure is disposed between and in a flat relation to the upper and lower surfaces of the excavated tooth r, the wing structure has a rear portion enlarged laterally, a front portion narrowed laterally, and an outer edge extended therebetween and converging towards the central axis of the tooth, which provides the excavating tooth with an area of penetration to widened ground, to facilitate the penetration of the extended transverse edge in the excavation implement. 12. The elongated digging tooth in accordance with 86 claim 11, characterized in that a longitudinal major section of the outer edge in the wing structure is configured with a cutting edge to promote ground penetration of the excavating tooth. The elongated digging tooth according to claim 11, characterized in that the wing structure is arranged on the tooth in a generally symmetrical relationship with respect to the central axis, which allows the tooth to be inverted about the central axis. The elongated digging tooth according to claim 11, characterized in that a second wing structure is provided and projects generally horizontally and laterally outwardly from an area on an opposite side of the tooth, the second wing structure having surfaces upper and lower generally horizontal, the upper and lower surfaces of the second wing structure is disposed between and in a different relationship to the flat relative to the upper and lower surfaces of the excavating tooth, the second wing structure has a rearwardly enlarged portion laterally, a front portion laterally narrowed and an outer edge extending between them and which converge towards a central axis of the tooth, providing the digging tooth with a penetration zone grounding flared to facilitate penetration of the self edge extended transversely in excavation implement. 15. The elongated digging tooth in accordance with 87 claim 11, characterized in that the wing structure extends from an area on one side of the tooth approximately halfway between the upper and lower surfaces of the tooth. The elongated digging tooth according to claim 11, characterized in that the rear end portion of the digging tooth is configured with a blind cavity for receiving and accommodating a longitudinal section of a nose section of an adapter extended from the extended edge in transversal shape of the excavation implement. The elongated digging tooth according to claim 16, characterized in that the enlarged rear portion of the wing structure extends outwardly and forwardly of the rear end portion of the tooth. 18. The elongate digging tooth according to claim 16, characterized in that it further includes a hole opening towards the blind cavity defined by the tooth to accommodate at least a longitudinal portion of a holding apparatus used to releasably secure the tooth and the adapter in a working combination with each other. 19. The elongate digging tooth according to claim 16, characterized in that it also includes opposite surfaces arranged within the blind cavity defined by the tooth to add stability to the tooth after the tooth is arranged in an operative combination with the adapter. 20. The elongated excavating tooth in accordance with 88 claim 16, characterized in that a marginal edge extending around the blind cavity provided in the rear end portion of the tooth has a rhombus cross-sectional configuration. 21. The elongated digging tooth according to claim 16, characterized in that it also includes a pair of holes aligned axially, each opens to the blind cavity defined by the tooth and is arranged along an axis extended to a angle that varies between about 25 ° and 65 ° relative to the transverse cutting edge at the front end portion of the tooth. 22. In combination, a bucket having a leading edge having a plurality of two-part excavating tooth assemblies connected to the edge in side-by-side relation to each other, each excavating tooth assembly includes an adapter secured to the bucket by an edge, the adapter has a nose portion extended forward from the edge and to which a replaceable excavating tooth is releasably secured, each excavating tooth has a leading end, with an edge extending transversely therethrough, a rear end positioned adjacent the edge of the tray and defining a blind cavity to receive the nose portion of the adapter, the front and rear ends of the tooth are aligned with respect to a central axis of the tooth, a top surface extended forward and downward from the back end and forward of the end 89 front of the excavating tooth and a lower surface extended forward and upwardly from the rear end and towards the front end of the digging tooth, each digging tooth includes a pair of wings extended outwardly in a direction generally parallel to the leading edge on the tooth from an area on each side of the tooth approximately halfway between the upper and lower surfaces of the tooth, each wing on the tooth has a rear portion enlarged laterally and a forward portion narrowed laterally so that, for a greater length of the same, an outer edge of each wing converges towards the central axis of the tooth from which the wing extends and diverges relative to the outer edge of a wing in an adjacent tooth and wherein the wings in each tooth are configured to protect the portion of the bowl edge disposed between the adjacent tooth assemblies against wear. 23. The invention according to claim 22, characterized in that the rear ends of the wings in the laterally adjacent excavating tooth assemblies are laterally separated by a distance ranging between 1.27 cm and approximately 3.17 cm. 24. The invention according to claim 22, characterized in that the wings on each excavating tooth are formed integrally as part of and with the rest of each tooth. 25. The invention according to claim 22, characterized in that the excavating tooth defines a hole that is 90 opens to the cavity defined by the tooth, to accommodate at least a portion of an apparatus used to releasably secure the tooth and adapter of each excavator tooth assembly in one in an operative combination with each other. 26. The invention according to claim 25, characterized in that the wing on each excavating tooth has first and second surfaces generally flat and with the outer edge of the wing on each excavating tooth configured to provide each wing with a cutting edge to facilitate penetration. to Earth. The invention according to claim 26, characterized in that one of the first and second generally planar surfaces on each wing of the tooth also defines an open channel arranged in a general alignment with an axis of the hole defined by the tooth to accommodate and align a flexible pin of the holding device with the hole defined by the tooth. 28. The invention in accordance with claim 26, characterized in that an area of the excavating tooth, arranged in a close relationship relative to the orifice defined by the tooth is configured to impart a compressive force to the penetrating retention apparatus as the retention apparatus is inserted in a position to maintain the tooth and the adapter in a working combination with each other. 29. The invention according to claim 26, characterized in that an area of the excavating tooth arranged in a close relationship with the hole defined by the tooth is configured 91 to prevent inadvertent axial displacement of the holding apparatus relative to the adapter or tooth. 30. The invention according to claim 27, characterized in that the generally flat surface of each wing on the tooth defining the open channel is configured to protect a longitudinal portion of the extended retaining device further to either side of the excavating tooth. 31. The invention according to claim 22, characterized in that the excavating tooth also includes opposite surfaces arranged within the cavity to add stability to the tooth after the tooth is arranged in an operative combination with the respective adapter of the excavating tooth assembly. . 32. The invention according to claim 22, characterized in that the tooth of each excavating tooth assembly is configured such that the cavity defined therein has a diamond-shaped cross-sectional configuration. 33. The invention according to claim 22, characterized in that the tooth of each excavating tooth assembly defines a pair of axially aligned orifices that open toward the tooth cavity and are disposed along an axis extended to a tooth. angle that is between approximately 25 ° and 65 ° with respect to the edge extended transversally at the front end of the tooth. 34. The invention according to claim 22, 92 characterized in that the laterally enlarged portion on each wing of the excavating tooth extends laterally and forwardly from the trailing end of the excavating tooth. 35. A ground coupling tooth adapted to be mounted on an excavating implement and having a wear component arranged rearwardly thereof, after being mounted on the excavating implement, the ground engaging tooth defines a central axis and has a front end portion, with an edge extending transversely therethrough, and a rear end portion, angularly diverging upper and lower surfaces having opposing side surfaces therebetween and wherein the tooth is also provided with a free end projection formed integrally with the rest of the tooth and extended between the rear end portion and the forward end portion thereof, with a rear portion of the projection extended away from at least one tooth surface a greater distance than the front portion thereof, so that an outer edge of the projection, between the front and rear portions of the same, converges towards the central axis and so that after the initial penetration to earth, the outer edge of the projection is arranged to initially fracture the earth with which the tooth passes, which reduces the wear on the wear component arranged back of the excavating tooth. 36. The ground engaging tooth according to claim 35, characterized in that the projection extends 93 away from the upper surface of the tooth and generally normal to the cutting edge extended transverse through the front end of the tooth. 37. The ground coupling tooth according to claim 35, characterized in that the projection moves laterally relative to the upper surface of the tooth, so that the projection is disposed closer to a side surface of the tooth than the tooth. other. 38. The ground coupling tooth according to claim 35, characterized in that the projection extends vertically from and longitudinally along an area on the upper surface generally centered between the lateral surfaces on the tooth. 39. The ground coupling tooth according to claim 35, characterized in that the projection has first and second surfaces that towards an outer edge thereof., converge one relative to the other to provide a cutting edge for the projection. 40. The ground engaging tooth according to claim 35, characterized in that the rear end portion of the tooth defines a blind cavity for receiving and accommodating a longitudinal section of a nose portion of an adapter extended from the extended transverse edge of the tooth. excavator implement. 41. The grounding tooth in accordance with the 94 claim 40, characterized in that the blind cavity opens to the back of the tooth and has a cross-sectional profile having a generally diamond-shaped cross-sectional configuration for a larger lateral portion thereof. 42. The ground engaging tooth according to claim 40, characterized in that the blind cavity in the rear end portion of the tooth has a cross-sectional profile with a generally rectangular configuration for a major longitudinal portion thereof. 43. The ground coupling tooth according to claim 40, characterized in that the projection has generally parallel upper and lower surfaces extended outwardly laterally from a side surface on the tooth, the upper and lower surfaces of the projection are arranged between and in a different relationship to the plane in relation to the upper and lower surfaces of the tooth. 44. The ground engaging tooth according to claim 43, characterized in that the rearwardly enlarged rear portion of the projection extends outwardly and forwardly of the rear part of the tooth. 45. The ground engaging tooth according to claim 40, characterized in that the projection extends laterally outwardly from a lateral surface on the tooth approximately midway between the upper and lower surfaces and in a direction generally parallel to the cutting edge. extended 95 transversely through the front end portion of the tooth. 46. The ground coupling tooth according to claim 45, characterized in that the projection is arranged generally symmetrical with respect to the central axis, whereby it allows the tooth to be inverted about the central axis. 47. The ground coupling tooth according to claim 43, characterized in that it also includes a second free end projection configured as a mirror image of the other free end projection and having generally flat upper and lower surfaces, with the second free end projection extended laterally outwardly from the other side surface of the tooth. 48. The ground engaging tooth according to claim 47, characterized in that the second projection extends laterally outward from the other lateral surface of the tooth approximately midway between the upper and lower surfaces and in a direction generally parallel to the edge. Cutter extended transversely through the front end of the tooth. 49. The ground coupling tooth according to claim 47, characterized in that the rear portion of each projection extending laterally from a respective lateral surface of the tooth has a generally horizontal and generally planar upper surface. 96 50. The ground engaging tooth according to claim 49, characterized in that the tooth also defines an orifice having an extended axis generally normal to the central axis of the tooth, the opening opens towards the blind cavity defined by the tooth to accommodate less a longitudinal portion of a retention apparatus used to releasably secure the tooth and the adapter in an operative combination with each other. 51. The ground engaging tooth according to claim 50, characterized in that the generally planar upper surface of each projection on the tooth also defines an upper open channel arranged in a general alignment with the axis of the through hole to accommodate and align the holding device with through hole. 52. The ground coupling tooth according to claim 50, characterized in that the retention apparatus used to releasably secure the tooth and the adapter in operative combination with each other., includes an elongate flexible pin and wherein an area of the tooth arranged in an encircling relationship with the hole defined by the tooth is configured to compress the flexible pin as the flexible pin is inserted in a position to hold the tooth and the adapter in a operational combination with each other. 53. The ground coupling tooth according to claim 50, characterized in that an area of the tooth arranged in a close relationship with the hole defined by the tooth is 97 configured to prevent accidental axial displacement of the holding apparatus relative to the adapter or tooth. 54. The ground engaging tooth according to claim 50, characterized in that the generally planar top surface of each projection on the tooth is configured to protect the longitudinal portion of the extended retention apparatus beyond the opposite sides of the tooth. 55. A ground coupling tooth adapted to be mounted on an excavating implement and having a wear component arranged rearwardly after being mounted on the excavating implement, the excavating tooth defines a central axis and has a front end portion , with an extended transverse cutting edge therethrough and divergent angled upper and lower surfaces arranged therebetween, the tooth is also provided with a first projection extended away and longitudinally along at least a longitudinal portion of a tooth surface, the longitudinal portion of the projection has a shorter length than the length between the leading and trailing ends of the tooth, and a second projection extended from at least one surface on the tooth rearward and in general longitudinal alint with the first projection, each of the first and second projections have an outer edge or and the first and second projections are configured to combine with each other to fracture the earth through which the tooth passes, and wear is reduced in the 98 wear component arranged backwards of the excavating tooth. 56. The ground engaging tooth according to claim 55, characterized in that the rear end portion of the digging tooth defines a blind cavity that opens in the back of the tooth to receive and accommodate a longitudinal section of the nose portion of the adapter. , extended forward from the guide edge of the excavating implement. 57. The ground engaging tooth according to claim 56, characterized in that the blind cavity opens to the back of the tooth and has a cross-sectional profile having a generally diamond-shaped cross-sectional configuration for a larger longitudinal portion of the tooth. the same. 58. The ground engaging tooth according to claim 56, characterized in that the blind cavity in the rear end portion of the tooth has a cross-sectional profile with a generally rectangular configuration for a major longitudinal portion thereof. 59. The ground coupling tooth according to claim 55, characterized in that it also includes third and fourth projections extended from another surface on the tooth arranged in an opposite relationship with respect to at least one projection, the third and fourth projections are they configure as mirror images of the first and second projections, respectively. 60. An elongated excavating tooth for a tooth assembly 99 Two-piece excavator adapted to be secured to a transverse extended edge of a bucket or its like, the excavating tooth defines a central axis and has a leading end, with a cutting edge extending transversely therethrough, and a rear end with a blind cavity opening thereto for receiving and accommodating a nose portion of the adapter extended from the edge extending transversely from the edge of the tray, each of the tooth and the adapter defining a hole that is arranged in register with another after the excavating tooth and the adapter are joined together to allow the holding apparatus to pass at least partly through the holes, whereby the tooth and the adapter are kept in an operative combination with each other, in where the hole defined by the tooth defines an extended axis generally normal to the central axis of the tooth, with the excavating tooth also includes a top surface extended forward and downward from the trailing end and towards the cutting edge of the digging tooth, and a lower surface extending forward and upward from the trailing end and towards the cutting edge of the tooth excavator, the excavating tooth also includes a generally horizontal projection extended laterally outwardly from an area on one side of the tooth, the projection having generally horizontal and parallel upper and lower surfaces, the projection has a rearwardly enlarged laterally, disposed forward of the axis defined by the hole in the tooth and an edge 100 externally extended forward from the rear portion enlarged laterally of the projection and converging towards the central axis of the tooth, which provides the excavating tooth with a progressively enlarged ground penetration zone to facilitate penetration of the tray edge. 61. The elongated excavating tooth according to claim 60, characterized in that the projection is formed integrated as a part and with the rest of the tooth. 62. The elongate digging tooth according to claim 60, characterized in that the tooth is configured so that the marginal edge extends around the cavity opening towards the back of the tooth, has a generally rectangular cross-sectional configuration. 63. The elongate excavating tooth according to claim 60, characterized in that the projection is arranged on the tooth in a generally symmetric relationship with respect to the central axis, thereby allowing the tooth to be inverted about the central axis. 64. An elongate digging tooth for a two-piece excavating tooth assembly adapted to be secured to a transversely extended edge of a bucket or its like, the excavating tooth defines a central axis and has a leading end, with an extended cutting edge. transversally between them, a rear end has a blind cavity open thereto to receive and accommodate a nose portion of an extended adapter 101 forwardly from the transversely extending edge of the tray, each of the tooth and adapter defines a hole that is arranged in register with another after the excavating tooth and the adapter are joined together to allow the holding apparatus to pass through. at least partially through the holes, whereby the tooth and the adapter are kept in an operative combination with each other, and wherein the hole defined by the tooth defines an extended axis generally normal to the central axis of the tooth, with the digging tooth also includes a top surface extending forward and downward from the trailing end and towards the cutting edge of the digging tooth, and a lower surface extending forward and upwardly from the trailing end and towards the cutting edge of the digging tooth, the excavating tooth also includes a generally horizontal projection extended laterally outward from an area in a of the tooth, the projection has upper and lower surfaces disposed between and in a different relationship to the flat relative to the upper and lower surfaces of the excavating tooth and the projection on the tooth is disposed rearwardly of the axis defined by the hole in the tooth. tooth and the back end of the tooth whereby the excavating tooth with a ground penetration zone progressively widened to facilitate the penetration of the tray edge. 65. The elongate excavating tooth according to claim 64, characterized in that the projection is formed integrated as a part and with the rest of the tooth. 102 66. The elongate digging tooth according to claim 64, characterized in that the projection on the tooth has at least one surface facing forward at a vertical angle to improve the projection's ability to fracture the ground before and thus protect the extended edge in cross section of the bucket against wear.