MXPA00001455A - Strap tensioning tool - Google Patents

Abstract

A strap tensioning tool (10) having a gear housing (20) with a foot (40) pivotally coupled thereto by a rotatably supported foot pivot member (50), a nose (100) pivotally coupled to the foot by a rotatably supported nose pivot member (122), and a foot roller (70) rotatably coupled to the foot (40) by a rotatably supported roller pivot member (72). The foot (40) and nose (100) are pivotally biased by corresponding compression springs (86,130) that are substantially enclosed and protected from the environment. The nose (100) has a strap engagement portion (110) biased toward a strap support portion of the foot (40) and is separated therefrom by a gap to facilitate insertion of a strap portion therebetween.

Description

PERFECTED TOOL FOR TENSING ANTI-CURRENT STRIPS OF THE INVENTION The present invention relates to improvements in strapping tensioners, particularly portable tools with energy supply for tensioning strapping. In general, the technique of tensioning straps applied around a load with a tensioning tool that is portable, manual or with a power supply is known. The tensioning tools generally comprise a gear compartment with a feeder wheel that protrudes from a side portion of the wheel, for joining the strap and tensioning it, when the strap is disposed between the feeder wheel and a tool support. In some tensioning tools, the support is pivotally coupled to the gear compartment, and a torsional spring of the support tilts the pivot bearing towards the feed wheel to join the strap during the tensioning operation. The push type tools PN-114 and PNR-114, marketed by ITW Signode, Glenview, Illinois, USA, for example, have an articulated support pivoted to a feed wheel by means of a torsion spring of the support, for join a portion of strap between the feeder wheel and an anti-friction device mounted on the support during the tensioning operation. See also US Pat. No. 3,249,131 entitled "Strapping tensioning tool with power supply". Other tensioning tools that are not push type tools also comprise an inclined support by a torsional spring of the support to a feed wheel during the tensioning operation. These tools include, among others, strap tensioning tools. However, in the strap tensioning tools, there are gripping teeth in the support, instead of the pin or roller used in the push type tools, to join a lower portion of the strap during the tensioning operation. . The torsional support spring in the tensioning tool of the US patent. No. 3,249,131 and other tools is generally arranged around a pivot rod made in a notch between the support and the gear compartment, where the torsional spring of the bearing is for the most part exposed on an upper portion of the tool. However, the torsional spring of the exposed support is particularly vulnerable to damage, for example due to the abrupt handling of the tool, which is common in the industry. The exposed spring also accumulates debris and particles of matter, which tends to interfere with the smooth pivoting action of the tool.

The torsional springs of the bearing in the known tensioning tools have a relatively short life, and therefore require frequent replacement. In some tools, the torsional spring of the support visibly degrades after approximately 1,000 operating cycles. The short duration is partly the result of the relative inefficiency of the torsional springs in general, and of the limitation in the number of turns or windings that fit in the limited space between the gear compartment and the pivot support of the tool. In addition, many torsional support springs are specialized parts, which are relatively expensive. Thrust-type tensioning tools, for example those discussed in U.S. Pat. No. 3,249,131, entitled "Strapping tool for strapping with power supply", also comprises an articulated spike coupled by pivoting with, and inclined towards, an articulated support by means of a torsional spring of the spout. The articulated spout is attached to a metal staple disposed around overlapping strip portions during tensioning, and it is crucial to accommodate between the support and the articulated spike that has different thicknesses. However, the torsional spring of the spout is subject to the same disadvantages discussed above related to the torsional spring of the support. In the tensioning tools discussed above, the support moves by pivoting with respect to a pivot rod coupled with the gear compartment. In push type tensioning tools, the articulated spout and the roller mounted on the support also move by pivoting with respect to pivot bars. The pivot rods are rotationally fixed, often by means of a roll pivot or a screw cord connection with some fixed structure. However, fixed pivot rods are difficult to assemble and maintain, and tend to wear out relatively quickly. In addition, many prior art pivot rods are specialized parts with different diameters made on the axial dimension thereof, and are therefore relatively expensive. In the push type tensioning tools of the prior art, the gear compartment has at least two access openings, where at least one has an exposed cover plate, for assembly and maintenance. Previously, multiple access openings were necessary to install parts in the gear compartment, including, for example, a gear and drive rod coupled with the feed wheel and the bearings associated therewith. In the US patent tool No. 3,249,131, for example, two large radial load and thrust bearings are installed in the gear compartment from an opening in a side portion thereof, and a worm wheel is installed from an opening in the bottom thereof. However, during use, the fasteners that retain the cover plate exposed on the tool tend to loosen, resulting in a separation of the cover plate therefrom. It is common for the tools to be operated without a cover plate, exposing the interior of the gear compartment to the environment. The present invention is oriented towards advances in the technique of strapping tensioning tools. An object of the present invention is to provide new strapping tensioning tools that solve problems in the art. A further object of the present invention is to provide new strapping tools that are economical. A further object of the present invention is to provide new strapping tensioning tools which are more reliable, have fewer parts and are easier to operate, assemble and maintain. A further object of the present invention is to provide new strapping tensioning tools having improved pivot bearing assemblies. A further object of the present invention is to provide new strap tensioning tools having a gear compartment with a single access cover and its corresponding cover plate. A further object of the present invention is to provide new strap tensioning tools having a peak pivotally engaged to a support and biased by a peak compression spring towards a support leg portion of the support. A further object of the present invention is to provide new strap tensioning tools having one or more gear compartments with a support pivoted thereto by a pivotally supported support pivot member, a peak pivotally coupled to the support by a member. pivotally supported pivot pin, and a pivot roll pivotally engaged with the support by a pivotally supported roller pivot member, and combinations thereof. A further object of the present invention is to provide new strap tensioning tools having a support coupled with a gear compartment, and a spike coupled with, and inclined towards, the support. The beak has a joining portion with the strip inclined towards a support portion of the support strip, and separated therefrom by a space to facilitate the insertion of a strip portion therebetween. A further object of the present invention is to provide new strapping tensioning tools having an inclined support by pivoting with respect to a gear compartment by means of a support tilting member., preferably a compression spring, which is protected from the environment. A further object of the present invention is to provide new strap tensioning tools having a pivotally coupled support with a gear compartment, and a lever extending from the bearing, and aligned essentially on an axis of the gear compartment. These and other objects, aspects, features and advantages of the present invention will be more apparent upon careful consideration of the following detailed description of the invention and the accompanying drawings, which may be disproportionate to facilitate understanding, and where similar structures and steps are designated in general by means of corresponding numbers and indicators. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a partial sectional side view of a tensioning tool with improvements of the present invention. Figure 2 is a partial front view of the tool of Figure 1. Figure 3 is a partial top view of the tool of Figure 1. Figure 4 is a partial sectional view of the tool of Figure 1. DETAILED DESCRIPTION OF THE INVENTION Figure 1 is a strapping tool 10 which generally comprises a gear compartment 20 having a feeder wheel 21 protruding from a portion thereof. The gear compartment 20 is generally coupled with a drive compartment 30 housing an air motor or some other drive device that drives the feed wheel 21. Other modes do not include a drive compartment, and instead have a feed wheel operated manually, as is generally known in the art. The tensioning tool 10 in the exemplary embodiment is a push type tensioning tool activated by compressed air, but many aspects of the present invention are more generally applicable to other types of strapping tensioning tools, for example strapping tools on strapping between other tools of manual operation or with energy.

Many strapping tensioning tools, including the exemplary thrust tensor tool and strap tensioning strapping tools, comprise a support 40 pivotally engaged with the gear compartment 20. In the exemplary embodiment, best illustrated in FIGS. 2, the support 40 comprises in general a band support portion 42 disposed generally opposite the feed wheel 21, and a clamps 44 extending upwardly from an inner portion 41 of the band support portion 42 thereof, also illustrated in Figure 4. The support 40 is pivotally coupled to the gear compartment 20, and is generally inclined with respect to the support, as will be discussed later, to support a single strap or overlapping portions of strap on the support portion of the support. strap 42 of the support adjacent to the feeder wheel 21 during tensioning of the strap. In thrust tensioning tools, the support 40 is often referred to as a cutter support, since a portion of the backing facilitates the cutting of a portion of strip adjacent to a sealed fastener, which is not illustrated, after tensioning and sealing. The support is pivotally engaged with the gear compartment, for example by a non-rotating pivot rod, as is known in the art, or preferably by a pivoting pivot member 50. FIGS. 1 and 2 generally illustrate the support 40 disposed between the gear compartment 20 and a side plate of the tool 10. The side plate 60 is secured to the gear compartment 20 by devices generally known in the art, but not illustrated, such as screws. In a preferred embodiment, illustrated in Figures 1 and 3, the pivot member of the support 50 is disposed through an opening 47 of the bracket 44 for pivotally engaging the support 40 with the gear compartment 20. Figure 3 illustrates the pivot member of the support 50 that it has first and second end portions 52 and 54, each of them rotatably supported by corresponding end portions in the gear compartment 20 and the side plate 60. Figure 3 illustrates, more particularly, the gear compartment 20 having a first notch. of pivot 22 to rotatably support the end portion 52 of the pivot member of the support 50, and the side plate 60 possesses a first pivot notch 62 to rotatably support another end portion 54 of the pivot member of the support 50. The pivot member of the support 50 is free to rotate relative to the gear compartment 20, the support 40 and the side plate 60, thereby reducing wear and providing greater reliability. tool pivot ability and action.

The pivot member of the support 50 is generally retained axially between the gear compartment 20 and the side plate 60 when the side plate is secured to the gear compartment by previously discussed devices. Figures 2 and 3 more particularly illustrate the gear compartment notch 22 having a final portion 23, and the notch of the side plate 62 having an end portion 63 between which the pivot member of the support is retained, from this way simplifying the assembly and eliminating the requirement of roller pivots or other fastening devices used in the prior art. The support pivot member 50 is preferably a conventional metal bolt and fixed diameter, or plug, commercially available, thereby eliminating the need to machine different diameters, as is necessary in the prior art. Thrust tensioning tools generally include an anti-friction member disposed in the support portion of the strap 42 of the support 40 generally opposite the feed wheel 21. In the exemplary thrust type tensioning tool 10 of Figures 1, 2 and 4, the anti-friction member is a roller rotatably coupled with support, and more particularly with its strap support portion 42. Other thrust-type tensioning tools alternately include a fixed pin disposed in the support portion of the support strap, on which the strap frictionally slides during tensioning with the wheel However, in the strap-on-strap tensioning tools, gripping teeth are mounted on the support, instead of the pin or roller on the push-type tools, to frictionally join with a lower portion of the strap during the tensed. The roller 70 is pivotally engaged with the support 40, for example by a non-rotating and machined pivot bar, or preferably by a rotating pivot roller member 72, which is similar to the pivot member of the support 50 previously. discussed Figure 4 generally illustrates the roller 70 disposed in a roll notch 46 of the bearing 40. The roller pivot member 72 is rotatably or non-rotatably disposed through a roll opening 70. The roll pivot member 72 also has first and second end portions 74 and 76, each of which is rotatably supported by corresponding portions of the support, and more particularly in corresponding first and second roller pivot notches 47 and 48 thereof. The roller pivot member 72 is then free to rotate relative to the gear compartment 20, the support 40 and the roller 70, depending on whether it is secured to the roller, thereby reducing wear, and providing greater reliability. The roller pivot member 72 is also axially retained between the gear compartment 20 and the support 40 when the support is pivotally engaged with the gear compartment, as discussed above. Figure 4 more particularly illustrates the first roller pivot notch 47 as an opening through the support towards the roller notch 46, through which the roller pivot member 72 can be inserted during the assembly of the roller 70. The second roller pivot notch 48 has a final portion 49 axially retaining the second end portion 76 of the roller pivot member 72. The other end portion 74 of the roller pivot member 72 is axially retained by the gear compartment 20. when the support 40 is assembled with it, thus simplifying the assembly and eliminating the requirement of roller pivots or other fastening devices used in the prior art. The roller pivot member 72 is preferably made of the same material of the pivot member of the support 50 discussed above. In Figures 1 and 3, the support 40 includes a lever 90 which generally comprises a first end portion 91 coupled with, and extending from, the clamp 44 on an upper portion of the tool. The handle 90 is activatable to and from the gear compartment 20 to pivotally pivot the bearing 40 against the inclination by pivoting the compression spring of the bearing 80 to move the support portion of the strap 42 of the bearing away from the feed wheel 21. Figure 3 illustrates an intermediate portion 93 and a second end portion 95 of the lever extending away from the support 40 and disposed generally on an axial dimension of the gear compartment 20, thereby providing a more lever grip surface. comfortable, and reducing the width of the profile of the tool. In the exemplary embodiment, the driving compartment 30 coupled with the gear compartment also comprises an axial dimension substantially aligned with the axial dimension of the gear compartment 20. The intermediate portion 93 and the second end portion 95 of the handle 90 extending from the support are also generally arranged on the axial dimension of the drive compartment 30. Figure 1 illustrates a compression spring of the support 80 projecting from the gear compartment 20 and acting on the support 40 for pivoting the support, such that it places the support portion of the strap 42 towards the feed wheel 21. A first end portion 82 of the compression spring of the support 80 is disposed in a compartment notch 24, and a second end portion 84 of the compression spring of support is attached to a portion of the support. The second end portion 84 of the compression spring of the support 80 is more particularly joined to a binding portion with the spring of the clamp 44 spaced apart from the pivot member of the support, so that a portion of the strap support portion disposed between the pivot member of the support 50 and the binding portion with the spring of the clamp, which is the roller 70 in the exemplary embodiment, is inclined towards the feed wheel 21. In Figure 1, the compartment notch 24 is in a upper side portion of the gear compartment, so that the second end portion 84 of the compression spring of the support 80 projects upwardly therefrom. In the exemplary embodiment, the binding portion with the spring of the bracket 44 is at least partially covered to protect the compression spring from the support 80. The second end portion 84 of the support spring 80 is preferably attached to a lower portion essentially cover 92 of the lever 90, which includes a protrusion 86 extending axially therefrom towards the compression spring of the support to prevent the compression spring of the support 80 from slipping. The lower cover portion 92 of the lever 90 covers the spring compression of the support 80 so that it is not exposed at least in the upper portion of the tool, where it is most vulnerable. A flange 94 extending downwardly from the lever 90 covers or protects a side portion of the spring of the support 80 projecting from the notch of the compartment 24. An opposite side portion of the support spring 80 is protected by the gear compartment 20 and the handle 90. In this way, the compression spring of the support 80 is essentially covered and protected, especially in the upper and lateral portions of the tool, thereby reducing the possibility of damage to the spring. The compression spring of the support 80 of the present invention is more efficient, reliable and of longer duration than the torsional springs of the tensioning tools of the prior art. In addition, the compression spring of the support 80 is not disposed around the pivot member of the bearing between the gear compartment 20 and the bearing 40, as is the torsional spring of the bearing in the tensioning tools of the prior art. The compression spring of the support 80 of the present invention can thus be replaced or replaced relatively easily, without it being necessary to essentially disassemble the tool, and more particularly with the mere fact of removing a lever handle from the tool. The compression spring of the support 80 of the present invention is preferably a conventional part, and therefore is more economical than the specialized and non-conventional torsional support springs of the tensioning tools of the prior art. In Figures 1 and 3 of the present invention, the tool 10 has a generally small size, is relatively narrow, and is of reduced weight compared to that of prior art tools. The support 40 is also placed closer to the gear compartment 20, which is made possible in part by the removal of the torsional spring from the prior art support between the bearing and the gear compartment. The reduced size, weight and protrusion of the bearing 40 in the present invention reduces the torque applied by the bearing 40 about an axis of the gear compartment 20. In prior art tensioning tools, this torque is essentially due to the size of the bearing and the extent to which it protrudes from the gear compartment, in part to accommodate the torsional spring of the prior art support between these. The reduced torque in the tool 10 of the present invention reduces the tendency of the tool to twist and get out of the hand of a tool operator, thereby reducing the physical fatigue associated with the use of the tool. In the push type tensioning tools, illustrated in Figure 1, an articulated spout 100 having a connecting portion with the strap 110 is pivotally engaged with the support 40, and more particularly in a peak notch thereof. The articulated peak, or peak, 100, is pivotally coupled to the support, for example by a non-rotating and machined pivot rod, as is known in the art, or preferably by a non-rotating pivot member of the spike. 120, which is similar to the roll support and pivot members discussed above. Figure 1 illustrates an opening 104 through the spout 100 to accommodate the spike member of the spout. The pivot member of the spout 120 has first and second end portions 122 and 124, each of which is rotatably supported by corresponding portions of the support, and more particularly in pivot notches of the corresponding first and second spouts 123 and 125 thereof. The pivot member of the spout 120 is therefore free to rotate relative to the support and the spout, thereby reducing wear and providing greater reliability and operation. The pivot member of the spout 120 is axially retained between the engagement compartment 20 and the support 40 when the support 40 is pivotally engaged with the gear compartment 20, as discussed above. Figure 3 more particularly illustrates the first peak pivot notch 123 as an opening through the abutment to the peak notch 43, through which the peak pivot member 120 can be inserted during assembly of the peak 100. The second pivot notch of the spout 125 has a final portion 126 axially retaining the second end portion 124 of the pivot member of the spout 120. The other end portion 122 of the spout member 120 is axially retained by the gear compartment 20 when the support 40 is assembled therewith, thereby eliminating the requirement for roller bolts or other fastening devices used in the prior art. The pivot member of the spout 120 is preferably made of the same material as the roll support and pivot members discussed above, and is a conventional and commercially available pin or bolt that has a relatively low cost. In Figure 1, the articulated peak 100 also comprises a peak notch 102 disposed generally opposite an abutment notch 45 of the abutment 40. A compression spring of the spout 130 having a first end portion 132 disposed at the notch of the spout 102 and a second end portion 134 disposed in the notch of the support 45 pivots the articulated spout, so that the connection portion with the strap 110 thereof is placed towards the support portion of the strap 42 of the support 40. The notch of the spout 102 and the notch of the support 45 between which the compression spring of the spout 130 is disposed preferably forms a fully covered cavity to protect from damage and the environment the compression spring of the spout 130. Additionally, the compression spring Peak 130 has many of the same advantages over the prior art, as discussed above in relation to the compression spring of the support 80. In Figures 1 and 2, a spacer member is disposed between the articulated spike 100 and the support portion of the strap 42 of the support 40 to provide a space therebetween when the spout is inclined towards the abutment by an inclining member, which may be a torsional spring or compression spring, as discussed above. This space facilitates the insertion of a portion of strap between the articulated peak 100 and the support portion of the strap 42 of the support 40. In Figure 2, the spacer member is preferably a protrusion 106 extending from the articulated spout 100, although it may alternatively extend from the support portion of the support strap 42, where the compression spring of the abutment 130 tilts the protrusion 106 so that the protrusion 106 one with the support portion of the strap 42 to form the space therebetween. Figure 2 also illustrates the joining portion with the strap 110 of the articulated spout which extends at least partially on the support portion of the strap 42 of the support between the outer and inner portions of the articulated spout 100. The protrusion 106 extends from the inner portion of the articulated peak proximate to the gear compartment 20 toward the support 40. The space between the joint portion with the strap 110 of the articulated spike 100 and the support portion of the strap 42 of the support 40 preferably has a beveled guide portion of strip decreasing from the outer portion of the cutter support towards its inner portion in the direction of the gear compartment 20. In Figure 2, the spike 110 has a beveled portion there, and the support also has a beveled portion 109, although in other modalities the beveled portion may only be at the peak or support. The beveled strip guide portion facilitates the initial insertion of a strip portion in the space between the articulated peak and the support. In Figure 4, the gear compartment 20 of the exemplary thrust type stripping tool 10 comprises a single access opening 25, illustrated partially in dotted lines in Figure 1, towards an interior portion of the compartment. The single opening 25 is located on a side portion of the gear compartment, and the feeder wheel protrudes therefrom. Best illustrated in Figure 4, a cover plate 140 is disposed in the access opening 25, and is retained in the opening by the retaining ring 142. An inner side of the pivot bearing 40 is disposed adjacent the cover plate 140, and the side plate 60 is secured to the gear compartment on an outer side of the support 40 opposite the cover plate 140, while the support is pivotally coupled to the gear compartment 20 and the side plate 60, as shown in FIG. discussed earlier. The single access opening 25 of the gear compartment 20 eliminates the requirement for exposed cover plates that may tend to loosen and fall off the tool, as in the prior art. Figure 4 also illustrates the feeder wheel 21 coupled with a drive shaft 28 projecting from the access opening 25, and more particularly through an aperture of the drive shaft of the cover plate 140. A sealing member, not illustrated , it may be disposed between the drive shaft 28 and the cover plate 140, as is generally known. A helical wheel 146, driven with a helical gear, is rotatably disposed in the gear compartment 20 and is coupled with the drive shaft 28 extending from the compartment. The drive shaft 28 is rotatably supported on its first and second end portions by corresponding first and second bearings 150 and 152 disposed in the gear compartment on inner and outer sides of the helical wheel 146. The first bearing 150 is press-fitted or is otherwise arranged in a bearing notch 151 formed in the gear compartment 20, and the second bearing 152 is disposed in a bearing notch 153 of the cover plate 140. Support the second bearing 152 by the cover plate 140, instead of a protruding portion of the compartment, as in the prior art tools, it allows the assembly of the first and second bearings 150 and 152 and the helical wheel 146 inside the gear compartment through the same access opening. on the side of the tool. In this way, in the present invention, a separate access opening is not required to assemble the worm wheel as in the prior art tools, and the gear compartment requires a single access opening. The first bearing 150 is preferably a combined thrust load bearing and radial load having a first diameter, and the second bearing 152 is preferably a radial load bearing having a second diameter less than the first diameter of the first bearing. The second bearing is smaller in size than the first bearing, using a bearing suitable only for radial loads. The small size of the first, and particularly the second bearing, of the present invention reduces the size and weight of the gear compartment. While the above written description of the present invention allows the person skilled in the art to make and use what is considered in the present to be the best embodiment of the invention, those skilled in the art will be able to understand and appreciate the existence of variations, combinations and equivalents of the specific exemplary embodiments of the present invention. Accordingly, the present invention will be limited not by the exemplary embodiments, but by all modalities that fall within the scope and spirit of the appended claims.

Claims (21)

1. CLAIMS 1. A strapping tool comprising: a gear compartment having a feeder wheel projecting from a portion of the compartment, where the gear compartment has a compartment notch; a support pivotally coupled to the gear compartment, and having a band support portion disposed generally opposite the feed wheel; a compression spring of the support having a first end portion disposed in the groove of the compartment, where the compression spring of the support has a second end portion that protrudes from the groove of the compartment and joins the support, where the spring compression of the support inclines the support so that the strap support portion thereof is positioned with respect to the feeder wheel. The tool of claim 1, wherein the support comprises a clamp extending upwardly from an interior portion of the strap support portion, wherein a support pivot member disposed through the clamp and supported by the compartment of gears that pivotally engages the bearing with the gear compartment, wherein the second end portion of the bearing compression spring is attached to a spring connecting portion of the clamp remote from the bearing pivot member, where a portion of the The strap support portion is disposed between the pivot member of the support and the connection portion with the spring of the clamp. The tool of claim 1, wherein the support comprises a clamp extending upwardly from an interior portion of the strap support portion, wherein the clamp is pivotally engaged with the gear compartment, where the second end portion of the compression spring of the support is connected with an essentially covered portion of the clamp on an upper portion of the tool, to protect the compression spring from the support. The tool of claim 3, wherein the notch of the compartment is in an upper side portion of the gear compartment, so that the second end portion of the bearing compression spring protrudes from the upper side portion of the gear compartment, where the The support has a lever extending from the clamp and on an upper portion of the tool, where the second end portion of the compression spring of the support joins a lower and partially covered portion of the lever. The tool of claim 1, which is a thrust-type strapping tensioning tool, further comprising an articulated spike coupled by pivoting with the support, wherein the articulated spike has a connecting portion with the strap and a notch. peak, wherein the support has a support groove, wherein a compression spring of the beak has a first end portion disposed in the peak groove and a second end portion disposed in the groove of the support. The tool of claim 5, wherein the support comprises a clamp extending upwardly from an internal portion of the strap support portion, wherein the clamp is pivotally engaged with the gear compartment, where the second end portion of the compression spring of the abutment is connected to an essentially covered portion of the clamp in an upper portion of the tool, so that the compression spring of the abutment is not exposed in an upper portion of the tool, where a peak pivot member it pivots the beak articulated with the clamp, where the supporting groove is on the clamp, and the compression spring of the beak is completely covered between the notch of the bearing and the notch of the beak, where the compression spring of the beak is inclined by pivot the articulated peak so that the attachment portion with the strap thereof is positioned towards the support portion of the axis of support. The tool of claim 5, wherein the articulated spout has a joining portion with the strap inclined towards the support portion of the support strap.; wherein a spacer member is disposed between the articulated spout and the support leg portion of the support to provide a space between the joint portion with the spike of the spout and the support portion of the support strip. The tool of claim 1, further comprising: a handle having a first end portion coupled with the support, wherein the handle has an intermediate portion and a second end portion extending from the support, generally on the dimension axial of the gear compartment; where the handle is activatable to and from the gear compartment for pivotally pivoting the bearing against tilting by pivoting the bearing compression spring. 9. A strap tensioning tool comprising: a gear compartment having a feeder wheel projecting from a portion of the compartment; a support having a strap support portion generally disposed opposite the feeder wheel, wherein the support has a clamp extending upwardly from an internal portion of the strap support portion; a side plate coupled with the gear compartment, wherein the support bracket is disposed between the gear compartment and the side plate; a pivot member of the support disposed through an opening in the clamp and pivotally engaging the bearing with the gear compartment; the bearing pivot member has a first end portion rotatably supported by the gear compartment, and the bearing pivot member has a second end portion rotatably supported by the side plate. The tool of claim 9, wherein the gear compartment has a first pivot notch and the side plate has a first pivot notch, wherein the first end portion of the pivot member of the bearing is disposed in the first pivot notch of the gear compartment, and the second end portion of the pivot member of the bearing is disposed in the first pivot notch of the side plate, where the pivot member of the bearing is axially retained between the gear compartment and the side plate. The tool of claim 9, which is a thrust-type strip tensioning tool further comprising: a roller and a roller pivot member disposed through a roll opening, wherein the strip supporting portion of the roller support has first and second roller pivot notches; wherein the pivot member of the roller has a first end portion rotatably disposed in the first roller pivot notch, and the roller pivot member has a second end portion rotatably disposed in the second roller pivot notch, wherein the roller pivot member The pivot of the roller is axially retained between the support and the gear compartment; wherein the pivot member of the roller rotatably supports the roller in the support. The tool of claim 9, which is a thrust-type strip tensioning tool further comprising: an articulated spout having a strip joining portion; a peak pivot member disposed through an opening of the articulated peak; the clamp has first and second peak pivot notches, wherein the beak pivot member has a first end portion rotatably disposed in the first pivot notch of the beak, and the beak pivot member has a second end portion rotatably disposed in the second pivot notch of the beak, wherein the beak pivot member is axially retained between the gear compartment and the side plate, wherein the beak pivot member pivotally supports the beak articulated on the bearer. A thrust-type strip tensioning tool comprising: a gear compartment having a feeder wheel protruding into a portion of the compartment, where the gear compartment has a compartment notch; an articulated support pivotally coupled to the gear compartment, wherein the articulated support has a strap support portion disposed generally opposite the feeder wheel; an articulated spout coupled by a pivot with the articulated support, wherein the articulated spout has a connection portion with the strap inclined towards the strap support portion of the articulated support; a spacer member disposed between the articulated peak and the strap support portion of the articulated support, to provide a space between the joint portion with the articulated spike strap and the support portion of the articulated support strip, where a strap is insertable in the space to move the articulated peak away from the strap support portion of the articulated support. The tool of claim 13, wherein the spacer member is a protrusion extending from the articulated spout, wherein the protrusion is inclined to join with the support portion of the strut of the articulated support. The tool of claim 14, wherein the joint portion with the articulated spike strap extends at least partially by the strap support portion of the articulated support between the inner and outer portions of the spout, where the protrusion extends from the inner portion of the articulated peak. 16. The tool of claim 15, wherein the space between the joint portion with the articulated spike strap and the support leg portion of the articulated support has a beveled strip guide portion that decreases from the outer portion of the articulated support toward the portion internal support articulated. A strapping tool comprising: a gear compartment having a generally elongate axial dimension, wherein the gear compartment has a feeder wheel projecting from a portion of the compartment; a pivoted support with the gear compartment, wherein the support has a strap support portion disposed generally opposite the feeder wheel; an inclining member attached to the support for pivoting the support with respect to the feeder wheel; a handle having a first end portion coupled with the support, where the handle has an intermediate portion and a second end portion extending from the support, generally on the axial dimension of the gear compartment, where the handle is activatable towards and from the gear compartment to pivot the support against the inclination by pivoting the inclining member. The tool of claim 17, further comprising a driver compartment having an axial dimension, wherein the driver compartment is coupled to the gear compartment, wherein the intermediate portion and the second end portion of the handle extend from the support in general on the axial dimension of the driving compartment. 19. A thrust-type strapping tensioning tool comprising: a gear compartment having a single access opening on a portion thereof, and a feeder wheel coupled with the drive shaft projecting from the access opening; a cover plate covering the access opening, wherein the cover plate has an impeller shaft opening through which the drive shaft projects; a support adjacent to the cover plate, wherein the support has a support portion of the strap disposed generally opposite the feeder wheel; and a side plate secured to the gear compartment, where the support is pivotally engaged with the gear compartment and the side plate between the cover plate and the side plate. The tool of claim 19, further comprising a helical wheel disposed in the gear compartment and coupled with the drive shaft extending from the compartment, wherein a first bearing is disposed on and supported by the drive compartment. gears on an inner side of the worm wheel to rotatably support a first portion of the drive shaft, and a second bearing arranged in the gear compartment and supported by the cover plate on an outer side of the worm wheel to rotatably support a second portion end of the drive shaft. 21. The tool of claim 20, wherein the first bearing is a combined load bearing and radial load with a first diameter, and the second bearing is a radial load bearing with a second diameter smaller than the first diameter of the bearing. first bearing