EP1819882B1 - Ensemble d'accouplement entre des pieces d'usure sur des outils supports pour equipements d'engins de travaux publics - Google Patents

Ensemble d'accouplement entre des pieces d'usure sur des outils supports pour equipements d'engins de travaux publics Download PDF

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Publication number
EP1819882B1
EP1819882B1 EP05824080A EP05824080A EP1819882B1 EP 1819882 B1 EP1819882 B1 EP 1819882B1 EP 05824080 A EP05824080 A EP 05824080A EP 05824080 A EP05824080 A EP 05824080A EP 1819882 B1 EP1819882 B1 EP 1819882B1
Authority
EP
European Patent Office
Prior art keywords
tooth
key
plane
adapter
complementary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP05824080A
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German (de)
English (en)
French (fr)
Other versions
EP1819882A1 (fr
Inventor
Charles Pasqualini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AFE Metal SAS
PREDAC
Original Assignee
AFE Metal SAS
PREDAC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR0452840A external-priority patent/FR2878870B1/fr
Priority claimed from FR0550734A external-priority patent/FR2878871B1/fr
Application filed by AFE Metal SAS, PREDAC filed Critical AFE Metal SAS
Publication of EP1819882A1 publication Critical patent/EP1819882A1/fr
Application granted granted Critical
Publication of EP1819882B1 publication Critical patent/EP1819882B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2858—Teeth characterised by shape
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2816—Mountings therefor
    • E02F9/2825—Mountings therefor using adapters
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2816—Mountings therefor
    • E02F9/2833—Retaining means, e.g. pins
    • E02F9/2841—Retaining means, e.g. pins resilient
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2891—Tools for assembling or disassembling

Definitions

  • the invention relates to the technical sector of equipment of public works machines with buckets, buckets or other receptacles likely to scrape, remove, move materials or others for their evacuation from a given place to other operating posts using public works machinery.
  • connection of the teeth on their nose adapters is made by keying to allow, after wear of the teeth, to proceed with their removal and replacement.
  • the horizontal, lateral, oblique or various stresses inherent to the applications and uses also cause deteriorations in the tooth-nose-adapter relationship, but also on the keying.
  • tooth-adapter fitting configuration as shown figure 1 , in the form of a fitting either pyramidal or frustoconical.
  • the nose of the adapter support has, in its front part, a stabilizing plate and the rear part of the adapter holder comprises housings receiving the two ears of the tooth.
  • the play established in the production of parts is such that J2 between the upper and lower faces of the fitting is greater than that achieved at the levels of the flat stabilization and ears (J1). J2> J1.
  • the keying systems of the teeth to ensure their retention on their adapter supports, are arranged, either vertically or horizontally. Their keys are assisted or not by an elastic element. Placed horizontally, they have the disadvantage of difficult access because of the presence too close to neighboring adapters. Placed vertically, they pre-dispose to the loss of keys, especially from the bottom.
  • the second is placed horizontally ( Figures 8 and 9 ).
  • a rubber tube is introduced into its housing in the adapter.
  • a cylindrical pin forming a key is introduced through one or other of the orifices of the tooth.
  • the diameter of the rod is slightly greater than the inside diameter of the rubber tube to create a clamping to ensure the holding in place of the key during service.
  • sandwich keys as described by the applicant, which are particularly arranged with a particular structure of two components movable relative to each other and between which is disposed an elastically deformable material.
  • Such a key is described in the patent PCT WO 2004/035945 the applicant.
  • This type of key is specific to a configuration of the tooth with a skirt surrounding and protecting the adapter.
  • STICKEY process subject of the patent EP No. 618,334 which provides for the insertion of a key in a vertical plane, the key being tapered from top to bottom, and receiving, in a suitable chamber, the connecting material.
  • This is in the form of a resin which solidifies by forming, after stiffening, a retaining sheath between the tooth and the adapter.
  • the key is completely embedded in the connection volume between the tooth and the adapter. Specific tools are then required to proceed with its removal and / or tearing, see also heating the elastic material to make it liquid and allow the removal of the key.
  • connection tooth-adapter This reflection was also directed to the connection tooth-adapter by the design of a specific keying device responding to the problems posed and goals sought.
  • the applicant's approach has been to propose a tooth-adapter coupling assembly that can implement, independently or in combination, depending on the case and application, special provisions in the contact zones between the tooth and the nose-adapter. on the one hand, and in the introduction of a keying device, on the other hand.
  • the connection between the tooth and the adapter is substantially improved by the addition of complementary contact areas for the absorption of stresses of all kinds and multi-directional.
  • the new design of the keying device also contributes to the limitation of the movement between the tooth and the adapter, while avoiding, as far as it is concerned, all risks of escape, from the top or the bottom, in the nose connection.
  • -adapteur which is perfectly secure by leaving no possibility of inadvertent snap when used in situ.
  • the coupling assembly is remarkable in that the stepped shape defines a complementary upper support plane which is oriented angularly with respect to the plane of the stabilizing plate, and in that the complementary shapes are made of specific way and in opposition to the longitudinal median axis of the adapter.
  • the coupling assembly of wear parts on support tools for equipment of public works machines of the type comprising an assembly key between a tooth and an adapter, the key being positioned vertically, said key fitting into a receiving sleeve of elastic material, the tooth and the adapter being arranged with openings and abutment and abutment zones allowing insertion of the key-sleeve assembly and its holding, is remarkable in that that the key is arranged with three specific areas, one intermediate to be engaged and cooperate with the sheath, another upper outlet of the sheath and being arranged with means for gripping and positioning a disassembly tool, and another lower to engage in the lower portion forming seat of the tooth, and in that the key in its intermediate portion has on its side faces a plurality of zones horizontal tool-holders extended by an alternation of recessed areas and projections capable of cooperating with a plurality of complementary raised and recessed zones established in the sleeve to ensure an adjustment and anchoring, and in that the tooth is arranged with a
  • the coupling assembly of wear parts on support tools for equipment of public works machines is remarkable in that the tooth and the adapter are arranged with profiled complementary support shapes located between their respective contact and connecting ends, said shapes being arranged symmetrically and in opposition on the upper and lower faces of the nose of the adapter and the tooth, and in that the key is arranged with three specific areas, one intermediate to be engaged and cooperate with the sleeve, another upper opening of the sleeve and being arranged with means for gripping and positioning a disassembly tool, and another lower to engage in the lower portion forming a seat of the tooth, and in that the key in its intermediate portion has on its side faces a plurality of horizontal areas taken of tools extended by an alternation of recessed zones and projections capable of cooperating with a plurality of complementary raised and recessed zones established in the sleeve to ensure an adjustment and anchoring, and in that the tooth is arranged with an opening upper flared allowing the introduction of the key and the positioning and actuation of a tool for
  • a tooth (D) and an adapter (A) can be associated and secured by a key (C).
  • the nose of the adapter is arranged in known manner in front with a stabilizing plate and or not openings for the reception of lateral ears arranged at the ends of the tooth.
  • the tooth and the adapter are arranged with complementary shapes (FA) supporting profiles in differentiated planes located between their respective ends and the stabilizing plate for the adapter and the tooth base, of on the one hand, and their opposite connecting and centering ends, on the other hand.
  • These complementary shapes (FA) are arranged symmetrically and in opposition on the upper (FS) and lower (FI) faces of the nose of the adapter and the tooth.
  • These complementary shapes are therefore additional support zones that complete the support zones installed on the stabilization plates, in front of the nose of the adapter, and back, if necessary, in the ears housing of the tooth, which no longer have to receive the effort alone when applying a stress on the stabilizing plate.
  • These shapes (FA) profiled additional support can increase the surface of stabilizing plates, to perform a better distribution of the forces received by the adapter nose, and to increase the total surface receiving the transmitted forces. This reduces the possibility of movement of the tooth relative to the adapter and reduces wear.
  • the upper (FS) and lower (FI) faces of the adapter nose are arranged between the front part of the stabilizing plate and the rear part beyond the constitutive zone of the nose of the adapter with tiered forms established over all or part of the width of the nose.
  • said stepped shapes located on the upper and lower faces of the nose of the adapter are established in the extension of the stabilizing plate, established in a plane (a) which is extended by an inclined plane (a2) until connection with the upper part connecting the area from the nose of the adapter to the body of the adapter.
  • the stepped shape thus defines an upper plane (a3) of complementary support which is oriented angularly with respect to the plane (a) of the stabilizing plate and also with respect to the oblique connection plane (a2).
  • the stepped form is, in its front part, in turn connected to the stabilizing plate (a1), itself offset with respect to the plane (a), by a tilting inclined plane (a4), so that said shape has, in its front part, a sloping configuration forming a notch.
  • the plane (a2) is inclined at the angle (G2) with respect to the plane (a).
  • the plane (a3) which starts from the same vertex (0) as the plane (a2), defines, with the latter, an angulation (G3) smaller than the angulation (G2), which allows the establishment of contact (a4 - a5) forming abutments at an inclination (G4) less than 90 ° with respect to the plane (a1) and oriented with respect to the longitudinal axis of the assembly in an inclination (G5) also less than 90 °, to increase the angular blocking capacity of the planes (a4) and (a5).
  • the shape (FA) thus described is found on the underside of the nose of the adapter symmetrically and opposite to the longitudinal median axis of the adapter.
  • the width of this shape (FA) on the nose of the adapter is preferably equal to half of the total width of the nose of the adapter thus leaving partially free the inclined plane (a2).
  • the connection area of the upper inclined plane (a3) with the inclined plane (a2) can be at any level relative to the body of the adapter.
  • the staggered shift of planes (a) and (a1) makes it possible to increase the surface of the planes (a4 and a5) and forms a notch that promotes lateral blocking of the tooth effectively because located on the most advanced area of the adapter bracket.
  • the planes (a6) and (a7) are defined by the junction of the upper planes (a3) and connection planes (a2) and are advantageously vertical. Their function is the role of notches with the addition of a self-centering horizontal alignment of the tooth on the adapter support.
  • the particular configuration of the adapter nose offers a better imbrication of the tooth on the adapter nose.
  • the tooth is thus arranged in a complementary manner to allow the reception of additional forms of the adapter nose.
  • figure 10 upper (LS) and lower (LI) housings disposed from the upper and lower faces of the tooth, and receiving the form (FA) of the aforementioned type. These housings have support walls and contact with the forms (FA).
  • the zone of junction with the front end forming a notch of the shape (FA) can be complementary ( figure 12 ) to define a firm interlocking complementary parts facing, or alternatively, the tooth may present ( figure 14 ) an internal clearance, so that the notch portion is not in contact and contact with the bottom of the housing established on the tooth and receiving complementary shapes (FA).
  • the particular configuration of the nose of the adapter and the tooth greatly increases the contact and support surfaces.
  • the intermediate support zones may be arranged on the horizontal faces and / or vertical of the nose of the adapter, the tooth being arranged in a complementary manner.
  • This implementation thus meets a first objective, that of limiting the respective movements of the tooth on the adapter with increasing support surfaces and their angular orientation to find themselves favorably positioned to respond and absorb the multi-directional stresses transmitted by the tooth.
  • this implementation can be sufficient, whatever the keying system used.
  • the keying device uses, to fulfill the functions and objectives sought above recalled, a key C, having a specific profile and conformation, capable of engaging and cooperating in a sheath (F) having an elastic deformation capacity, the key and the sheath being capable of being engaged and protected in the assembly of the tooth (D) on the adapter (A) located on the skips and buckets of public works machinery.
  • the adapter and the tooth are themselves profiled, one to receive internally said sheath, and the other to, on the one hand, protect the key in partial overflow of the sheath and allow the introduction of tools disassembly of the key in the situation of removal of the worn tooth.
  • the adapter (A) has a housing (AL) for receiving the elastic sleeve (F) ( figure 25 ) and the tooth (D) ( figures 26 , 27 , 28 and 29 ) has an upper orifice (D1) for the introduction of the key (C) with the passages (D1,2) and (D1,3) for the access of the disassembly tool of the key, and a lower orifice (D2) having the stop (D2,1) and the opening portion (D2,2).
  • the key is constituted by a pyramidal body (C1) allowing it to have a wedge effect, whose section is rectangular or trapezoidal.
  • the rear face in contact with the orifices of the tooth (D) is more advantageously rounded.
  • a boss (C2-C3) having a function of gripping and against-support of the tool, and one or more notches (C4) successive horizontal and spaced along said parts. These notches are intended to allow the positioning of the tip of the tool for removal. At least the top notch that appears figure 19 is disengaged from the sheath (F) and into the space or introduction opening formed in the tooth. The following notch (s) may be partially in the interior of the sleeve when the key is in place. The release of the key causes the progressive accessibility to the other notches to allow the introduction of the tool again and operate an additional clearance until the final removal of the key.
  • the intermediate portion (Z2) of the key then has, on the two lateral faces whose surface is voluntarily broadly dimensioned and underlying, one or more recessed areas (C5) separated by relief zones (C15) alternately. Said zones (C5-C15) are established in a horizontal plane on said lateral faces. These so-called zones (C5-C15) thus have a complementary profile with a configuration similar to that in the inner part of the sleeve (F) with a succession of complementary hollow and relief zones (F15-F16) to allow assembly and locking in position of the key in the sheath. In view of the constitution of the sheath of a material having an elastic capacity of deformation, it ensures a firm connection of the key in the sheath.
  • the front face (C6) of the key is rectilinear and terminated in the lower zone by a radius or chamfer (C7) to avoid an angle that could damage the area (F1-2) of the elastic sleeve during its introduction.
  • the rear face of the key comprises a zone (C8) recessed with respect to the two active faces (C9) and (C10), arranged in the upper and lower part of the key, which bear in the two orifices (D1) and ( D2) of the tooth (D).
  • the active face (C9) is arranged with a notch (C11) forming a stop for locking the exit of the key upwards and, at the active end face (C10), a chamfer (C12) to facilitate the introduction of the lower end of the key in the hole of the tooth (D2).
  • the lower zone (Z1) of the overflow key of the sleeve has an abutment face (C13) and the end of small section (C14).
  • said notches (C4) may have transverse recesses in their thickness to facilitate the taking of tools.
  • the sheath (F). This is made of a material having an elastic capacity of deformation. For example, it is made of rubber or polyurethane resin.
  • This sheath has an outer pyramidal shape to facilitate its implementation. place and its replacement in its housing (AL) formed in the adapter holder.
  • This sheath has a central through opening (F1) receiving the key (C).
  • On the inside front (F1-1) is disposed an over-thickness of material (F1-2) which represents the elastic volume which will be put in compression by the key when it is introduced.
  • the upper (F2) and lower (F3) forms of its front face are set up in such a way that they leave a vacuum in the housing (AL) of the adapter support so as to allow the expansion of the material excess (F1- 2) when it is put in compression by the key.
  • the reliefs (F1-3) are arranged on the lateral interior faces of the passage (F1) in variable number and corresponding to those established on the lateral faces of the key and whose shape is conjugated with those of the corresponding recesses (C5) of the key.
  • the inside rear side is marked (F1-4) and is straight. Its mission is to guide the key when it is introduced.
  • the height of the sleeve is set to correspond to the intermediate zone (Z2) of the key with its successive parts (C5-C15) recessed and raised.
  • the key secured to the tooth by its contacts in the orifices of the latter also has, on its lateral faces (C15) and (C16), a tight elastic support on the lateral faces (F1. 5) and (F1.6) of the sleeve (F).
  • the adapter has a vertical opening of pyramidal configuration to receive the sheath.
  • the tooth has an upper orifice (D1) for introducing the key with flared parts (D12-D13) to allow the passage of the active part of the disassembly tool and access to the different notches (C4).
  • said flared portions have a straight-sloped profile (D12.1-D13.1) to constitute a base of counter-support during the pivoting movement of the release tool.
  • the lower part of the tooth (D) has a passage opening (D2) of the lower end of the key with an upper recess zone (D2.1) corresponding to the bearing zone of the zone (C13) of the key forming a seat, the lower opening portion being referenced by (D2.2) and receiving the final end of the key.
  • the assembly of the key and the sleeve is as follows.
  • the sheath (F) is introduced beforehand into its housing (AL) of the adapter support (A) (see figure 26 ) and is maintained by the corresponding pyramidal form.
  • the tooth (D) is set, that is to say, introduced on the adapter and the key is inserted by force, using a striking tool.
  • the key can not be placed upside down.
  • the wedge shape of the key facilitates its introduction by gradually operating the compression of the zone (F1-2) of the sheath (F).
  • the necessary force of introduction is thus also progressive and is only at its maximum in the final position. This is obtained when the abutment face (C13) meets the face (D2-1) of the tooth.
  • This abutment face (D2-1) is placed very indented so as to always exist, even in the case of extreme wear of the outer face of the tooth.
  • the chamfer (C12) has allowed the entry of the key in the hole (D2) of the tooth even if there is a positional shift of the tooth forward relative to its adapter support.
  • the key by the succession of its zones in projections and recesses, is thus centered and maintained in the recessed zones and complementary projections of the sheath.
  • the chosen material of the sheath makes it possible, by virtue of its elastic deformation capacity, to retract or crush during the passage in force of the relief zones of the key opposite the zones in relief of the sheath. After passage, the lateral zones in relief of the sheath return to their initial position and are anchored in the recessed areas of the key. After setting up, we are in the situation of assembly of figure 31 and 32 .
  • This compression also creates, on the part of the key C pushed backwards, a bearing force on the inner rear face (F1-4) of the sleeve.
  • the key has the clearance (C8) which eliminates its contact with the face (F1-4), which no longer has the ability to transmit an opposition reaction.
  • a conventional lever forming tool such as a screwdriver which, resting on the faces (D1-2-1) and (D1 -3-1) passages (D1-2) and (D1-3), can lift the key by placing itself in the notches (C4) under the two bosses (C2) and (C3) and in the notches (C4 ) by the effect of counter-support on the straight parts and the tilting of the tool which raises the key.
  • the force of action on the tool is sufficient to disengage the full and recessed complementary parts formed on the sheath and the key.
  • the height of the bosses (C2) and (C3) is voluntarily large so that, in the case of extreme wear of the upper face of the tooth, there remains, on the key, enough material for the action of such lever as shown above.
  • the solution provided by the invention by a firm connection between the key and the sheath due to the complementarity of the protruding and recessed forms on the lateral faces (C15-C16) and the lateral faces (F15-F16) of the sheath, with a tight elastic connection makes it possible to respond to the problem of controlling the pivoting of the tooth relative to the nose of the adapter.
  • the key-sleeve assembly forms a one-piece assembly that stiffens the tooth-adapter connection, and limits the possibility of pivoting. This is an important advantage of the invention.
  • this key connection device is well in the invention and particularly emphasizes the easy assembly and disassembly of the key while respecting the constraints of holding and safety during use of the entire device.
  • the key and its sheath are, moreover, perfectly protected in the tooth-adapter coupling.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
EP05824080A 2004-12-02 2005-12-01 Ensemble d'accouplement entre des pieces d'usure sur des outils supports pour equipements d'engins de travaux publics Active EP1819882B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0452840A FR2878870B1 (fr) 2004-12-02 2004-12-02 Ensemble d'accouplement entre des pieces d'usure sur des outils supports pour equipement d'engins de travaux publics
FR0550734A FR2878871B1 (fr) 2005-03-22 2005-03-22 Ensemble d'accouplement entre des pieces d'usure sur des outils supports pour equipement d'engins de travaux publics
PCT/FR2005/051017 WO2006059043A1 (fr) 2004-12-02 2005-12-01 Ensemble d'accouplement entre des pieces d'usure sur des outils supports pour equipements d'engins de travaux publics

Publications (2)

Publication Number Publication Date
EP1819882A1 EP1819882A1 (fr) 2007-08-22
EP1819882B1 true EP1819882B1 (fr) 2012-03-07

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ID=36090729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05824080A Active EP1819882B1 (fr) 2004-12-02 2005-12-01 Ensemble d'accouplement entre des pieces d'usure sur des outils supports pour equipements d'engins de travaux publics

Country Status (9)

Country Link
US (1) US7523572B2 (ko)
EP (1) EP1819882B1 (ko)
KR (1) KR101256848B1 (ko)
CN (1) CN101099005B (ko)
AT (1) ATE548516T1 (ko)
AU (1) AU2005311135B2 (ko)
CA (1) CA2589554C (ko)
ES (1) ES2383697T3 (ko)
WO (1) WO2006059043A1 (ko)

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US9062436B2 (en) 2011-10-07 2015-06-23 Caterpillar Inc. Implement tooth assembly with tip and adapter
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US9057177B2 (en) 2011-10-08 2015-06-16 Caterpillar Inc. Implement tooth assembly with tip and adapter
US8943716B2 (en) 2011-10-10 2015-02-03 Caterpillar Inc. Implement tooth assembly with tip and adapter
FR2983880B1 (fr) * 2011-12-08 2014-11-21 Afe Metal Systeme mecanique comprenant une piece d'usure et un support, et godet comprenant au moins un tel systeme mecanique
US9617718B2 (en) * 2012-12-18 2017-04-11 Komatsu Ltd. Digging tooth mounting assembly and digging tooth
JP5885648B2 (ja) 2012-12-18 2016-03-15 株式会社小松製作所 掘削ツース及び掘削具
WO2016019193A2 (en) * 2014-07-30 2016-02-04 Itr America Llc Cutting link for mining chain and mining pin retention system
US9915148B2 (en) 2015-01-28 2018-03-13 Esco Corporation Mineral winning pick, holder, and combination
NL2015612B1 (en) * 2015-10-14 2017-05-08 Ihc Holland Ie Bv Snail tooth.
US11846187B2 (en) 2017-08-30 2023-12-19 Itr America, Llc Mining pin retention system

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US6393739B1 (en) * 2001-08-16 2002-05-28 G. H. Hensley Industries, Inc. Excavating tooth point and adapter apparatus

Also Published As

Publication number Publication date
EP1819882A1 (fr) 2007-08-22
CA2589554C (fr) 2013-02-05
US7523572B2 (en) 2009-04-28
AU2005311135B2 (en) 2011-02-24
ES2383697T3 (es) 2012-06-25
KR20070099580A (ko) 2007-10-09
ATE548516T1 (de) 2012-03-15
CA2589554A1 (fr) 2006-06-08
KR101256848B1 (ko) 2013-04-23
CN101099005A (zh) 2008-01-02
CN101099005B (zh) 2012-03-21
US20080201996A1 (en) 2008-08-28
AU2005311135A1 (en) 2006-06-08
WO2006059043A1 (fr) 2006-06-08

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