MXPA98005132A - Nail finish nailer - Google Patents

Abstract

The present invention relates to a gripping drive tool having a controllable mechanism of the actionable tool, the gripping driving tool comprising: a front layer with a channel for guiding a fastener driven from there into the interior of a work piece, having the front layer of one end, an upper side, a lower side and opposite sides, a working contact element having an upper side with a housing, a lower side, substantially opposite sides and a tip, interior side portions and portions of the opposite sides of the front layer disposed in the housing of the working contact element for slidably retaining the working contact element in the front layer, skewing the tip of the working contact element to protrude forward beyond the end of the front layer, coupled the work contact element to the tool control mechanism, slide the element of work contact forward and backward along the lower side of the front layer, parallel to the channel of the front layer, to activate and deactivate the mechanism of the tool control, whereby the location of the work contact element The lower side of the front layer provides better visibility of the front layer

Description

PNEUMATIC FINISHING NAILER BACKGROUND OF THE INVENTION The invention relates generally to fastening driving tools, and more particularly to pneumatic finishing gripping motive tools that have an improved work contact element, drive depth adjustment, layer assembly Front hinged, and tank assembly, among other improvements. Pneumatic or combustion driven driving tools are known for driving fasteners into a workpiece and are widely used to drive finishing nails, or lost head nails, into wood finishes and other materials. The fasteners are supplied from a strip of interleaved fasteners disposed in a reservoir coupled to a front portion of the clamping drive tool, wherein the individual fasteners are fed in sequence into a channel of the face layer. A drive blade is axially accelerated through the channel of the front layer behind the fastener to engage this to open the interleaved strip holder and to drive the clip from an aperture of the front layer within the work piece. In many gripping motive tools the tank is oriented at a right angle in relation to the channel inside the front layer. And in other gripping motive tools the tank is advantageously swept back from the front layer at an angle relative to the channel therein to improve the clearance around the front layer and facilitate the handling and operation of the driving tool of fastening, particularly when performing nailing operations in narrow spaces, for example along the corners of walls and ceilings that are intercepted. The gripping drive tools also include a work contact element coupled to a tool control mechanism operable as a safety feature to enable and disable the gripping drive tool. The work contact element is biased forward to exit beyond one end of the front layer, and can move back and forth through a limited range, parallel to the axis of the motor blade and the channel. In operation, a tip of the working contact element is depressed against a workpiece surface to move the work contact member rearwardly relative to the end of the front layer to activate the control mechanism of the workpiece. tool, thus enabling the clamping drive tool, where the work contact element can return to its biased forward position when removing or releasing the work contact element from the work piece, which deactivates the clamping drive tool .

The inventor of the present invention recognizes that known work contact elements of the prior art have a tendency to interfere with the positioning of the gripping drive tool, often preventing access of the front layer to some areas. These prior work contact elements also tend to obstruct the view of the operator of the front layer, thus preventing the exact location of the fastener in the workpiece. The exact location of the fasteners in the work piece is particularly desirable in finishing operations. U.S. Patent No. 5,564,614 entitled "Nailing Depth Adjusting Mechanism for Pneumatic Nail Guns" issued October 15, 1996 in favor of Yang is exemplary of many of the known prior work contact elements formed in the art. from a partially wound wire member disposed forward and around the front layer, but suffering from the disadvantages discussed above. The work contact elements of the prior art generally have a large profile, or a large contact surface area, to prevent penetration or deterioration of the workpiece, especially the softer varieties of woods. Therefore, at least for the gripping motive tools there seems to be reluctance to decrease the profile of the work contact element, because, it was thought, it was causing so much damage to the work piece. But the relatively large profile of the current work contact elements only exacerbates the tendency of the work contact element to interfere with the operation of the clamping drive tool, and in addition unnecessarily increases the weight thereof. Another known and desirable feature of the gripping drive tools is the ability to adjust the depth of penetration, or drive, of the fastener into the workpiece. The depth of the drive adjustment is usually made by adjusting the extent to which the work contact member protrudes forward beyond the tip of the front layer, thus adjusting the extent to which the motor blade extends toward the piece of work and the extent to which the fastener is pushed into the work piece. A head portion of the fastener can therefore be lowered below the surface of the workpiece, or be paired with the surface thereof, or protrude from the surface of the workpiece. The inventor of the present invention recognizes, however, that the drive depth adjustment mechanisms known from the prior art are generally complex assemblies having many elements in collaboration, which usually do not maintain a fixed depth adjustment, particularly during the prolonged operation of a motor holding tool. In U.S. Patent No. 5,564,614 entitled "Nailing Depth Adjustment Mechamism for Pneumatic Nail Guns" issued October 15, 1996 in favor of Yang, for example, an end portion of the wire work contact element partially The winding is threadably coupled to a trigger control strip operable to activate and deactivate the drive tool. More particularly, the threaded portion of the working contact element is disposed through first and second axially aligned holes, formed in a first and second projections or flanges spaced parallel to the trigger control strip. A toothed adjusting wheel or nut is rotatably disposed about the threaded portion of the working contact member, between the parallel flanges of the trip control strip, and a compressed spring is disposed between the front flange and a received end. of the adjustment wheel apparently to prevent the unintentional rotation of the adjusting wheel, and supposedly to absorb the impact. An end portion of the threaded portion of the working contact member is disposed in a socket, or flanged sleeve disposed through the second hole in the rear flange, presumably to allow smooth adjustable movement of the working contact member in relation to the Flanges of the shot control strip. An end cap of the flanged sleeve apparently limits the adjustment of the working contact element towards the tip of the front layer. The depth of drive adjustment of U.S. Patent Number 5,564,614 therefore has many collaborative components that require extensive fabrication, including forming flanges and drilling holes there, and is laborious to assemble, thus increasing costs . Additionally, the effectiveness of the compressed spring in order to prevent unintentional depth adjustment of the working contact element is questionable, unless the spring is extremely firm, but said firm spring significantly complicates the assembly thereof in the narrow space between the parallel flanges. Yet another known and desirable feature of the gripping drive tools is the ability to gain access to the front layer channel in order to alleviate or extract fasteners clamped there., what happens occasionally. The Paslode®, Model IM250 F-16 Cordless Finish Nailer, for example, includes a front layer composed of two components hingedly retained in a closed configuration by a Quick Clear lever that has a C-shaped housing at a rear end thereof. , located away from one end of the front layer. The lever can move forward in the direction of the end of the front layer against the bias of a stretched spring to release the components of the front layer from the grip of the C-shaped housing. But the fasteners trapped in the channel formed between the components of the hinged front layer tends to force the components apart, thus locking the lever, which prevents the movement of the lever towards the end of the front layer as is necessary to open the front layer and access the channel therein. The activation of the lever is further complicated by the inconvenient location of the gripping member on it, in the direction of a relatively inaccessible portion of the tool. In practice, users often apply an impact force to the lever to release the components of the front layer, but this is undesirable because it can damage the drive tool. In addition, the lever of the IM250 F-16 has a tendency to pivot because the travel thereof is not contracted along the longitudinal direction of the front layer, thus requiring the operator to conscientiously direct the movement of the lever throughout. of the longitudinal direction of the front layer, which further complicates the activation of the lever, particularly when a fastener is imprisoned in the front layer. Finally, the lever must be activated manually to allow the closing of the pivoting portion of the front layer and to couple the components thereof in the C-shaped housing of the lever. The reservoir of the gripping drive tools also usually includes a channel formed between the opposite side walls of the reservoir to receive the interleaved strip of fasteners. The space between the opposite side walls is a critical dimension. If the space is too wide, the ends of adjacent interleaved fastener strips have a tendency to overlap and imprison in the reservoir channel. If the space is too narrow, the strip of interleaved fasteners can be locked in there. This is particularly true in view of the fact that the strip of interleaved fasteners is not necessarily perfectly flat. The inventor of the present invention recognizes that prior art tanks suffer from many disadvantages resulting from the need to accurately space the side walls forming the reservoir channel. One-piece or unitary reservoirs, for example, are usually formed through an extrusion process, wherein the channel, or hollow passage, along the longitudinal axis of the reservoir has a cross-sectional shape in the form of dona. Through this process, however, it is not possible to accurately shape the dimensions of the channel, particularly its width, along the unitary deposit extruded over its entire length. Therefore, known extruded unit deposits should, in general, undergo a subsequent sizing operation to compensate for variations in the channel dimension. But the sizing operation is time consuming and expensive. Other deposits are formed from two extruded halves which are subsequently assembled and separated appropriately through spacer members in collaboration with corresponding transverse screws, which retain the halves in an assembly. The halves of the extruded deposits show better constancy of channel spacing compared to the unit deposits, but two-piece tanks require additional fabrication, even drilling and drilling cross holes through this, require additional components and subsequent assemblies, which increases costs. The present invention is directed to advances in gripping motive tools in general, including improvements in pneumatic finishing gripping motive tools, which overcome problems of the prior art. It is therefore an object of the present invention to provide a novel clamping drive tool having novel work contact elements, novel drive depth adjustments, novel hinged face layer assemblies, and novel reservoir assemblies, among other improvements, and combinations of it. It is another object of the invention to provide a novel clamping drive tool having a front layer with a channel for guiding a fastener driven therefrom into a workpiece, a work contact element having a slanted tip to project forward beyond one end of the front layer, and the work contact element is slidable back and forth along a lower side of the front layer parallel to the channel thereof to activate and deactivate a control mechanism of the tool when pressing the tip against the work piece, whereby the work contact element has a low profile to achieve a better visibility of the front layer and for the best operation and handling of the tool without damaging the piece of work. It is another object of the invention to provide a novel gripping drive tool with a work contact element slidably coupled to a front layer to activate a tool control mechanism, the work contact element is biased to project forward beyond at one end of the workpiece, a link having a threaded portion engages the work contact element along one side of the front layer, a support having two separate fingers with corresponding curved end portions disposed on sides opposed to the link, which is arranged through the fingers, and an adjusting nut and a compressed ring are arranged around the threaded portion of the link between the fingers and the support, whereby the working contact element is adjustable in relation to the front layer when turning the adjusting nut, and the compressed elastic ring prevents unintentional adjustment of it. It is still another object of the invention to provide a novel fastening driving tool having a front layer formed by a rear plate hingedly engaged to a front plate, the rear plate pivotable in relation to the front plate between an open configuration and a closed configuration, wherein the front piece defines a channel therebetween to drive a fastener from one end of the front layer into a workpiece, when the front layer is in the closed configuration, and exposing the channel when the front layer is in the configuration open. Corresponding flanges protruding from one side of the back plate and the front plate can be received in a housing of a lever when the front layer is in the closed configuration, wherein the lever is biased toward the end of the front layer to maintain it in the closed configuration, and the lever can move away from the end of the front layer against the bias to release the first flange and the second flange of the lever housing, whereby the rear plate is pivotable relative to the front plate to the open configuration, when the first flange and the second flange are released from the lever housing. It is still another object of the invention to provide a novel clamping drive tool having a front layer with a channel for frequency receiving individual fasteners of a strip of interleaved fasteners disposed in a channel of a reservoir formed by a first and a second elongate member corresponding that they have corresponding lateral walls individually formable by extrusion, the first and second elongate members biased away from each other through a tapered member disposed in an opening at opposite ends of the container, the opening defined by corresponding portions of the elongated members and extending along the entire length of the container. length of the reservoir, whereby the tapered members accurately separate the side walls to form the reservoir channel therebetween. These and other objects, features and advantages of the present invention will become more apparent upon careful consideration of the following detailed description of the invention and the accompanying drawings, which may be disproportionate to facilitate understanding, wherein the structure and similar steps they are referred by corresponding numerals and indicators.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a side plane view of a pneumatic clamping driving tool in accordance with an exemplary embodiment of the invention. Figure 2 is a first partially elongated side elevational view of a front portion of the tool of Figure 1. Figure 3 is a partially elongated top plane view of the portion of the front layer along the aa lines of the Figure 1. Figure 4 is a second, partially elongated, opposite side elevational view of the portion of the front layer of Figure 1. Figure 5 is an elevated view of the partially elongated front end of the portion of the front layer along the length of the front layer. the lines bb of Figure 1. Figure 6 is a sectional view of a portion of the reservoir of the drive tool holding along the dc lines of Figure 1. DETAILED DESCRIPTION OF THE INVENTION Figure 1 is a view in lateral plane of a gripping drive tool 10 usable for driving fasteners or lost head nails disposed in an obliquely interleaved strip, which generally comprises a box 20 coupled to a front layer 100, a handle 30 extending from the box 20 and a reservoir 40 coupled to the front layer 100, wherein the reservoir 40 extends rearwardly away from the front layer 100 at an angle in the direction of the handle 30 as shown in the exemplary embodiment. Alternatively, the reservoir can extend from the front layer 100 at a right angle with respect thereto. The exemplary embodiment of Figure 1 also shows a pneumatic supply coupling 50 at a base of the handle 40. Figures 3 and 5 show the front layer 100 with a channel 102 there to receive individual fasteners from the fastener strip. interleaved and to guide the driven fasteners from an aperture of the front layer 100 in the direction of an intended material, as is known in the art. Although the exemplary fastening driving tool has an inclined tank, the objectives, features, aspects and advantages of the invention are applicable to tanks oriented at right angles with respect to the front layer 100, and to holding driving tools usable for driving head nails. lost for finishes, either pneumatically driven or through combustion means, or otherwise. The clamping drive tool 10 also includes a work contact element 110 coupled to a tool control mechanism for activating the tool control mechanism, which activates and deactivates the clamping drive tool as is generally known in FIG. The technique. In accordance with an aspect of the invention shown in Figures 2-5 the front layer 100 also includes an end 104, an upper side 106, a lower side 107, and opposite sides 108 and 109. The work contact element 110 includes an upper side 112, a lower side 114, substantially opposite sides 116 and 118 and a tip 119. Figures 2 and 3 show the work contact element 110 further including a housing 120 formed on the upper side 112. Portions of the underside 107 of the front layer 100 and portions of the opposite sides 108 and 109 of the front layer 100 are disposed in the housing 120 of the work contact element 110 to slidably retain the work contact element 110 in the front layer 100. tip 119 of the work contact element 110 is biased to project forward beyond the end 104 of the front layer 100, as discussed below. The work contact element 110 is slidable back and forth along the bottom side 107 of the front layer 100, parallel to the channel 102 of the front layer 100 to activate and deactivate the tool control mechanism, which activates and deactivating the tool 10. The location of the work contact element 110 below and along the bottom side 107 of the front layer 100 significantly improves the visibility of the front layer 100., particularly the end 104 thereof, by the operator of the driving tool 10, thus allowing a more accurate positioning of the driven fasteners within the workpiece, which is very desirable in the finishing operations. Figures 2-4 show the work contact element 110 with a low profile resulting from its relatively narrow width and tapered surfaces, including the underside 114 thereof, and which also result from the closeness in partially enclosed relationship of the element. work contact 110 with respect to the front layer 100. The low profile of the work contact element 110 increases to a further visibility of the front layer 100 by the operator, and improves the free space around the front layer 100 , thus facilitating the handling and operation of the driving tool 10, which is desirable when performing nailing operations in some spaces, for example along the corners of walls and ceilings that are intercepted. Figure 5 shows the front layer 100 with opposite sides 108 and 109 which diverge divergently from the upper side 106 of the front layer towards the lower side 107 of the front layer 100 to form a substantially pigeon tail cut shape. The housing 120 of the work contact element 110 has a complementary shape in substantially pigeon tail cut formed by the divergingly extending side walls 122 and 124 and by a bottom surface 126. The divergingly extending side walls 122 and 124 of the housing 120 may correspond slidably to the divergingly extending side walls 108 and 109 of the front layer 100, and the lower surface 126 of the housing 120 may slidably correspond to the lower side 107 of the front layer 100, thereby slidably retaining the work contact element 110 with the front layer 100. The front layer 100 may have other shapes in shear, including square, rectangular and curved as long as the housing of the work contact element 110 has a partially shaped cut surface. that can be slidably retained in the front layer 100. In accordance With this aspect of the invention, the work contact element 110 is slidable relative to the front layer 100, forwards and backwards in a direction parallel to the channel 102 of the front layer 100. Figures 2 and 3 and 5 show to the work contact element 110 which includes an arm 130 extending backward away from the tip 119 of the work contact element 110 and along one side of the front layer 100. Figure 3 shows the arm 130 offset to one side of the work contact element 110 and partially interconnected thereto by a flange 132 having a tapered side 133 to maintain the low profile of the work contact element 110 and remove any protrusions that may interfere with the operation of the power tool 10. Figures 2 and 3 show the work contact element 110 also having a wire link 140 with a threaded end portion 142 protruding from the bra 130 of the work contact element 110 and extending generally backward away from the end 104 of the front layer 100. In the exemplary embodiment, the work contact element 110 including the arm 120 and the flange 132 is formed unitarily with plastic material, including urethane, polyurethane and glass-filled nylon materials. In a preferred embodiment, the wire link 140 is captured in the arm 130 of the plastic portion formed unitarily from the working contact element, for example, in an insert molding operation. In addition to the advantages discussed above, forming the work contact element 110 and particularly the tip 119 thereof from plastic reduces the tendency of the tip 119 to damage the workpiece, compared to the prior art work contact elements formed with metals. A softer and more elastic plastic is especially suitable for this purpose, as long as the work contact element 110 is sufficiently regulated to activate the tool control mechanism. The clamping drive tool 10 also includes a drive depth adjustment mechanism 200 for adjusting the extent to which the tip 119 of the work contact element 110 protrudes beyond the end 104 of the face layer 100. FIGS. 3 show a support 210 coupled to a tool control mechanism and movably coupled to the clamping drive tool 10, wherein the support 210 is generally slidable relative to the front layer 100 in the direction of and away from the end 104 of the front layer 100. In the exemplary embodiment, the support 210 is partially coupled to the holding tool 10 by a pin 212 which extends through an elongated slot 204 of the support, which allows the support movement 214 in relation with the bolt 210 towards and away from the end 104 of the front layer 100, generally parallel to the channel 102 of the front piece 100. Figure 1 shows the support 210 extending backward away from the front layer 150 and supported so that it can be moved between the body 20 and a roller pin 33, thereby preventing the support pivoting 210 about the pin 212. A compressed spring member 216 it is disposed between an end 217 of the support 210 and a portion 215 of the holding driving tool 10 for biasing the support 210 forward in the direction of the end 104 of the front layer 100. The compressed spring member 216 is also partially disposed about a protruding member 218 extending rearwardly from the holder 210 to retain the compressed spring member 216 in cooperative contact with the holder 210. A front end portion 219 of the holder 210 includes two separate fingers 220 and 230 where each finger has a curved end portion substantially C-shaped 222 and 232 forming a corresponding groove 223 and 233 through the finger correspondingly, wherein the grooves 223 and 233 through the fingers are formed along a common axis, corresponding to an axis of the link 140. In accordance with this aspect of the invention, a portion of the link 140 is disposed in the grooves 223 and 233 of the fingers 220 and 230 wherein the C-shaped curved end portions 223 and 233 of the fingers 220 and 230 are disposed on opposite sides of the portion of the link 140 disposed in the grooves 223 and 233 of the fingers. fingers In addition, the fingers 223 and 233 have a relatively increased width or dimension along the axis of the link 140, which tends to reduce the friction between the link 140 and the fingers 220 and 230, thus facilitating the smoother axial adjustment of the member. work contact 110. An adjusting nut 240 is disposed about the threaded portion 142 of the link 140 between the fingers 220 and 230 of the support 210 and an elastic ring 250 is also disposed about the threaded portion 142 of the link 140, wherein the elastic ring 250 is disposed between the adjusting nut 240 and one of the fingers 220 or 23P under compression. The elastic ring 250 can be a ring or a rubber or plastic washer member with elastic characteristics. The link 140 of the work contact element 110 is thus coupled to the support 210 of the tool control mechanism, whereby the work contact element 110 is adjustable towards and away from the end 104 of the front layer 100 at the time of the rotation of the adjusting nut 240, which may include a knurled outer surface to facilitate the rotation of this. The compressed elastic ring member 250 prevents unintentional rotation of the adjusting nut 240, and the adjustment of the work contact element 110, which may occur during the operation and operation of the clamping drive tool 10. The C-shaped curved end portions 222 and 232 of the fingers 220 and 230 may be more or less curves, and in some configurations the C-shaped curved end portions may be curved to form a partially or completely closed annular portion, wherein the grooves 223 and 233 are completely surrounded or almost to form corresponding passages therethrough to receive the link 140. The greater extent in which the C-shaped end portions 222 and 232 are curved correspondingly increases the contact of the surface area with the adjusting nut 240 and the compressed elastic ring 250 disposed between the fingers 220 and 230, increasing thus the friction between this and decreasing the likelihood of an unintentional adjustment of the work contact element 110. Notably, the formation of the s C222 and 232 curved end portions of the fingers in a forming or stamping operation is substantially less expensive than forming holes through drilling or milling operations as in the prior art, despite the extent to which the extreme curved C-shaped portions are curved. In applications where the C-shaped curved end portions 222 and 232 of the fingers 220 and 230 are completely or almost completely closed, the fingers 220 and 230 may be disposed along the same side of the link 140. And in the embodiments having only minimal or partially C-shaped end portions 222 and 232 on the fingers 220 and 230, a washer 252 could be disposed about the threaded portion 142 of the link 140, between the compressed elastic ring 250 and the finger 230. In accordance with this configuration, the washer 252 provides a closed annular surface against which the compressed elastic ring member 250 seats, thereby providing greater surface contact area with the compressed elastic ring member 250, which increases the friction caused by the compressed ring member 250, as discussed above. According to another aspect of the invention shown in Figure 2, a first adjustment limiting member 144 is disposed about the link 140 and is fixed along the axial dimension thereof between the work contact element 110 and the finger 230 of the support 210, whereby the first adjustment limiting member 144 limits the adjustment of the work contact element 110 towards the end 104 of the front layer 100. A second adjustment member 143 may be arranged around the link 140 in the threaded end portion 142 of this behind the finger 220 moving away from the tip of the front piece 150, whereby the second adjustment limiting member 143 limits the adjustment of the work contact element 110 away from the end 104 of the front piece 110 , thus preventing separation of the work contact element 110 from the tool 10. The adjustment limiting members 143 and 144 may, for example, be an elastic disposed E-ring. about the corresponding grooves formed in the link 140. The second adjustment limiting member 143 can alternatively be a final cap frictionally disposed about the threaded portion 142 of the link 140. In some applications, in addition, the first adjustment limiting member 144, whereby adjustment of the working contact element 110 in the direction of the end 104 of the front layer 110 is limited by the discontinuation of the threaded portion 142 around which the adjusting nut 240 advances to link 140. The drive depth adjusting mechanism 200 of the present invention is, therefore, a relatively simple assembly having a minimum number of components, which provide accurate and reliable adjustment of the work contact element 110 in relation to with end 104 of front layer 100. Compressed elastic ring member 250 of impute depth adjustment mechanism The action 200 of the present invention prevents slipping or unintentional rotation of the adjusting nut 240 during the operation and handling of the clamping drive tool., which is an improvement over the mechanisms of the prior art. In addition, the C-shaped curved ends 222 and 223 of the fingers 220 and 230 can be formed in a stamping operation simultaneously with the cutting of the support member 210 from a metal foil, thus eliminating the need for subsequent drilling operations. to form the receiving holes of the linkage as required in the prior art. Because the work contact member 10 is supported in a manner compatible with the front layer 100 and is slidable relative thereto towards and away from the end 104 of the front layer 100, the curved ends in the form of C 222 and 232 of the first and second fingers 220 and 230 do not support the work contact element 110 as in the prior art, but instead provide a mechanism for adjustably coupling the work contact element 110 to the support 210 of the control mechanism of the tool for transferring the axial movement of the work contact element 110 along the axis of the link 140 towards the support 210. Figures 2-5 show the front layer 100 with a back plate 150 hingedly attached to a front plate. 160, wherein the back plate 150 is pivotable about the hinged end 161 in relation to the front plate 160 between a closed configuration and an open configuration. Figure 5 shows the back plate 150 and the front plate 160 defining the channel 102 therebetween to guide a fastener from the front layer 100 inside the work piece when the back plate 150 and the front plate 160 are in the closed configuration , wherein the channel 102 is exposed when the back plate 150 and the front plate 160 are in the open configuration. In accordance with another aspect of the invention which is best shown in Figure 4, a first flange 152 protrudes from one side of the back plate 150 substantially transversely to the channel 102, and a second flange 162 protrudes from the same side of the front plate 160 substantially transverse to the channel 102. The first flange 152 and the second flange 162 are adjacent and are in a substantially corresponding relationship when the rear plate 150 and the front plate 160 are in the closed configuration. A lever 170 is also disposed along the side of the front layer 100, wherein the lever 170 can move back and forth relative to the front layer 100, substantially parallel to the axis of the channel 102. The lever 170 has a rear end 172 and an opposite front end 174 disposed towards the end 104 of the front layer 100, the front end 174 having a housing 180 for receiving the first flange 152 and the second flange 162, which are in a substantially corresponding relationship when the back plate 150 and the front plate 160 are in the closed configuration. The lever 170 is movably coupled to the front layer 100 by a bolt 175 disposed through an elongated slot 177 through the lever 170. A compressed spring member 190 is disposed between the rear end 172 of the lever 170 and a portion 192 of the front layer 100 for biasing the lever 170 forward in the direction of the end 104 of the front layer 100, wherein the compressed spring member 190 is also partially arranged around a protruding member 173 extending toward back from the lever 170 for retaining the compressed spring member 173 in a cooperative connection with the lever 170. The lever 170 also includes a protruding front member 178 extending forward from the front end 174 thereof, wherein the leading finger 178 is disposed between opposed guide members 162 and 164 on the front layer 100, wherein the guide member 162 is also the second flange. The opposing guide members 162 and 164 guide the movement of the lever substantially parallel to the channel 102 of the front layer 100. In operation, the first flange 152 and the second flange 162 can both be received in the housing 180 of the lever 170 and are maintained in a substantially correspondent relationship when the rear plate 150 and the front plate 160 are in the closed configuration. In accordance with this aspect of the invention, an upper surface 182 of the housing 180 can be connected with an upper surface 163 of the first flange 152 and a lower surface 184 of the housing 180 can be coupled with a lower surface 163 of the second flange 162 to prevent the pivoting movement of the back plate 150 in relation to the front plate 160. The lever 170 is, however, movable backward away from the end 104 of the front layer 100 against the bias of the compressed spring member 190 to release the first flange 152 and the second flange 162 of the housing 180 of the lever 170, whereby the rear plate 150 is pivotable upward relative to the front plate 160 and away from it to the open configuration when the first flange 152 and the second flange 162 are released from the housing 180 of the lever 170. Figures 3 and 4 show the lever 170 including a flange 182 protruding lat. erally outwardly and away from the lever 170 to facilitate manual gripping of the lever 170 and move it backward away from the end 104 of the front layer 100 against the bias of the compressed ring member 190. Figure 4 shows the first flange 152 of the back plate 150 with a sloping lower local surface located rearwards 153, and the lever 170 with a bevelled upper surface located forwardly 171, wherein the inclined surface 153 of the back plate 150 can be coupled to the inclined surface 171 of the lever 170 when the back plate 150 moves from the open configuration to the closed configuration, thus moving the lever 170 backwards away from the end 104 of the front layer 100 against the bias of the compressed spring 190. In accordance with this aspect of the invention, the back plate 150 can be moved from the open configuration to the closed configuration without a grip of the lever 170 and moving the lever back away from the end 104 of the front layer 100.

Figure 1 shows the reservoir 40 with a front end 42 coupled to the front layer 100 for sequentially feeding individual fasteners from a reservoir channel 40 to the channel 102 of the front layer 100. Figure 1 also shows reservoir 40 with one end rear 44 coupled to an end cap 60. The end cap 60 has a surface 62 that can correspond to the rear end 44 of the reservoir 40 and be secured thereto through clamping members 66, such as bolts or screws, extending through of the end plate 60 and inside the rear end 44 of the tank 40, as discussed below. Figure 3 shows the front layer 100 with a surface 103 which can correspond to the front end 42 of the reservoir 40 and be secured thereto through clamping members extending through the front layer 100 and into the front end 42 of the deposit 40, as discussed below. Figure 6 is a sectional view of the reservoir 40 showing the channel 42 for receiving the strip of interleaved fasteners, wherein the channel 42 of the reservoir 40 has a substantially T-shaped transverse cut to receive a head portion and a tang pointy strip of nails of lost head or interleaved fasteners. Figure 6 also shows the reservoir 40 formed by a first elongated member 300 with a first side wall 310 having a first inner surface 312, a first leading end and a first opposed posterior end having both the same configuration denoted by 320 in the Figure 6, a first upper end portion 330 having a first mating end 332, and a first lower end portion 340. The reservoir is also formed with a second elongated member 400 coupled in a manner corresponding to the first elongated member 300, wherein the second elongate member 400 has a second side wall 410 having a second interior surface 412. , a second leading end and a second trailing end having both the configuration denoted by 420 in Figure 6, a second upper end portion 430 having a second matching end 432, and a second lower end portion 440. The first end portion bottom 340 of the first elongate member 300 includes a housing 350 formed by an outer flange 360 and an inner flange 370, wherein the housing 350 extends along the entire length of the first elongate member 300 between the front end 42 and the end rear 44, shown in Figure 1. The second lower end portion 440 of the second elongate member 400 includes and an intermediate flange 450 with an inner surface 452 and an outer surface 454. When assembled, the first mating surface 332 of the first elongated member 300 corresponds to the second mating surface 432 of the second elongate member 400. In the form of exemplary embodiment, the first and second mating surfaces 332 and 432 have complementary staggered configurations for positively aligning the first and second elongate members 300 and 400 in correspondence relation. In addition, the intermediate flange 450 of the second elongated member 400 can be arranged in the housing 350 formed by the inner flange 370 and the outer flange 360 of the first elongate member 300 such that the first interior surface 312 of the first side wall 310 faces the the second inner surface 412 of the second side wall 410. Figure 1 shows the first and second tapered members 47 and 48 disposed in an opening 49 between the inner surface 452 of the intermediate flange 452 and the inner flange 450 of the front end 370 and the rear end 42 of the reservoir 44 to urge the outer surface 454 of the intermediate flange 450 so that it engages the outer flange 360 along the entire length of the reservoir, shown in Figure 6, thus separating exactly , the first interior surface 312 of the first side wall 310 in relation to the second interior surface 412 of the second side wall 412 to form the channel 410 to form the channel 46 therebetween in the reservoir 40. In accordance with this aspect of the invention, the coupling in collaboration between the outer surface 454 of the intermediate flange 450 and the outer flange 360 is along the entire length of the deposit between the leading end 42 and the trailing end 44 thereby substantially eliminating the tendency of the channel dimension of the reservoir 46 to vary along the length of the reservoir as a result of a deformation of the side walls 310 and 410 members intermediate spacers arranged transversely, which are commonly used in two-piece tank assemblies of the prior art. Figure 6 shows a portion of the housing 350 formed on an inner surface 362 of the outer flange 360 with a curved surface, and the outer surface 454 of the intermediate flange 450 with a complementary curved surface that can be connected in an equal manner to the inner surface curve 362 of the outer flange 360 when the intermediate flange 450 is urged outwardly by the tapered members 47 and 48. Figure 6 also shows a portion of the housing 360 formed on an inner surface 372 of the inner flange 370 with a curved surface, and the inner surface 452 of the intermediate flange 450 with a curved surface, wherein the curved surface 372 of the inner flange 370 faces the curved surface 452 of the intermediate flange 450 to form the opening 49 therebetween., which extends throughout the entire deposit. As discussed above, the tapered members 47 and 48 can be disposed in the opening 49 of the reservoir 40. Figure 1 shows the rear end plate 60 disposed at the rear end 44 of the reservoir 40 formed by the first rear end of the first and second members. elongate 300 and 400. Two fasteners 66, only one of which is shown in Figure 1, are disposed across the end plate 60 and in the corresponding openings 302 and 402 of the tank 40, shown in Figure 6, from the rear end 44 of the first and second elongate members 300 and 400, thereby coupling the end plate 60 with the reservoir 40. Two clamping members, not shown, also protrude from the front layer 100 and into the openings 302 and 402 from the front end 42 of the reservoir 40, thus coupling the front layer 100 with the reservoir. Figure 6 also shows the first elongate member 300 with the same configuration in cross section along the entire length thereof, and the second elongate member 400 with the same configuration in cross section along the entire length thereof. In accordance with this aspect of the invention, the first elongated member 300 and the second elongated member 400 can be formed by extrusion processes. By extruding the elongate members 300 and 400 individually, the dimensional accuracy with which the elongated members 300 and 400 can be formed is significantly increased. Additionally, the opening 49 defined by the curved surfaces 372 and 452 is formed during the extrusion process, and therefore does not require subsequent perforation or milling steps, as required in the fabrication of the two-piece reservoirs of the art. previous. The opening 302 and 402 can also be formed in a similar manner during the extrusion process and extend along the entire length of the reservoir, thereby providing access to the leading and trailing ends 42 and 44 of the reservoir 40. In addition, the tapered members 47 and 48 are preferably self-tapping screws that are threadably connected in the opening 49 defined by the curved surfaces 372 and 452 from the front and rear ends 42 and 44 of the reservoir 40, thus eliminating the requirement of performing a thread forming operation in the opposite front and rear ends 42 and 44 of the tank. Although the above written description of the invention allows any person skilled in the art to make and use what is currently considered to be the best embodiment of the invention, any person skilled in the art will appreciate and understand the existence of variations, combinations, equivalent modifications. within the spirit and scope of the specific exemplary embodiments presented in the document. The present invention, therefore, will not be limited by the specific exemplary embodiments presented therein, but by all embodiments within the scope of the appended claims.

Claims (20)

1. CLAIMS 1. A gripping drive tool that has a control mechanism of the actionable tool, the gripping driving tool comprising: a front layer with a channel for guiding a fastener driven from there to the interior of a work piece, having the layer front one end, one upper side, one lower side and opposite sides; a work contact element having an upper side with a housing, a lower side, substantially opposite sides and a tip, portions of the inner side and portions of opposite sides of the front layer disposed in the housing of the working contact element for slidably retaining the work contact element in the front layer, biasing the tip of the work contact element to project forward beyond the end of the front layer; coupling the work contact element to the tool control mechanism, slidable the work contact element back and forth along the bottom side of the front layer, parallel to the channel of the front layer, to activate and deactivate the tool control mechanism, whereby locating the work contact element along the bottom side of the front layer provides better visibility of the front layer. The gripping drive tool of claim 1, wherein the opposite sides of the front layer that diverge divergently from the upper side of the front layer to the lower side of the front layer to form a substantially glued cut shape. of pigeon, the housing of the work contact element having a substantially complementary cut shape of pigeon tail for slidably retaining the working contact element in the front layer. The fastening driving tool of claim 1, the working contact element having an arm extending rearward away from the tip of the working contact member and along one side of the front layer, the arm engaged to the mechanism of control of the tool. 4. The driving tool of claim 3, formed the contact element working with a plastic. The gripping drive tool of claim 4 further comprising a wire link having a threaded end portion projecting from the work contact element, capturing a portion of the wire link in the plastic portion of the work contact element . 6. The drive tool of claim 3 further comprising: a link coupled to the arm of the work contact element, the link having a threaded end portion extending back away from the tip of the work contact element and along on one side of the front layer; a support coupled to the control mechanism of the tool having the support two separate fingers, each finger having a curved end portion forming a groove through the finger, the grooves formed through the fingers along a common axis, disposed a portion of the bond in the grooves of the fingers; an adjusting nut arranged around the threaded portion of the link between the fingers of the support; an elastic ring disposed around the threaded portion of the link provided by the elastic ring between the adjusting nut and one of the fingers, under compression the elastic ring, whereby the working contact element is adjustable by turning the adjusting nut , and the compressed elastic ring prevents unintentional adjustment of the working contact element. The gripping drive tool of claim 6 further comprising a washer disposed about the threaded portion of the link, the washer disposed between the elastic ring and one of the fingers. 8. The gripping motor having a work contact element slidably coupled to a front layer, biased the work contact element to project forward beyond one end of the front layer, and movable the work contact element relative to the front layer to drive a tool control mechanism to activate and deactivate the driving tool for holding, the driving tool comprising: a link coupled to the work contact element, a link coupled to the arm of the work contact element, the link having a threaded end portion extending back away from the tip of the work contact element and along one side of the front layer; each finger having a curved end portion that forms a groove through the finger, the grooves being formed through the fingers along a common axis, a portion of the link being arranged in the grooves of the fingers; an adjusting nut arranged around the threaded portion of the link between the fingers of the support; an elastic ring arranged around the threaded portion of the link provided by the elastic ring between the adjusting nut and one of the fingers, under compression the elastic ring, whereby the working contact element is adjustable by turning the adjusting nut , and the compressed elastic ring prevents unintentional adjustment of the work contact element; The clamping drive tool of claim 8 further comprising an adjustment limiting member projecting from the link, the adjustment limiting member disposed towards one end of the link outside the fingers of the support, whereby the adjustment limiting member it limits the adjustment of the work contact element away from the front layer, thus preventing separation of the work contact element from the tool. The clamping drive tool of claim 8, the adjusting nut having a knurled outer surface. A gripping drive tool comprising: a front layer having a back plate hingedly engaged to a front plate, the back plate pivotable relative to the front plate between an open configuration and a closed configuration; the back plate and the front plate defining a channel therebetween to drive a fastener from one end of the front layer into a workpiece when the front layer is in the closed configuration, and exposing the channel when the front layer is located in the open configuration; a first flange protruding from one side of the back plate substantially transverse to the channel, and a second flange projecting from the same side of the front plate substantially transverse to the channel, the first and second flanges in a substantially correspondent relationship when the back plate and front plate are in closed configuration; a lever disposed along the side of the front layer and movable back and forth relative to the front layer, the lever having a rear end and an opposite front end disposed toward the end of the front layer, having the front end a housing for receiving the first and second flanges in substantially correspondence relationship; a member "of compressed spring acting on the rear end of the lever to bias it towards the end of the front layer, wherein the first and second flanges can be received in the lever housing and maintained in substantially correspondence when the plate front and back plate are in the closed configuration, a lever movable backward away from the end of the front layer against the bias of the compressed spring member to release the first and second flanges in substantially correspondent relationship to the housing of the lever, whereby the back plate is pivotable relative to the front plate to the open configuration when the first and second flanges are released from the lever housing 12. The clamping drive tool of claim 11, the lever mobilely engaged. to the front layer, the lever having a first finger protruding from the front end of the lever and a rear finger protruding from the rear end of the lever, one end of spring members arranged around the rear finger, and the front finger disposed between opposite guide members of the front layer, whereby the lever it can move back and forth substantially parallel to the channel of the front layer. 13. The clamping drive tool of claim 11, the lever having a flange projecting laterally outwardly and away from the lever to grip the lever and moving it backwards away from the end of the front layer against the bias of the compressed spring member. The clamping drive tool of claim 11, the first flange of the back plate having a lower inclined surface located rearwardly and the lever having an upper sloped surface located forward, engaging the inclined surface of the back plate with the surface tilting of the lever when the back plate moves from the open configuration to the closed configuration to move the lever backward away from the end of the front layer and to allow the back plate to pivot to the closed configuration. 15. An improved gripper motor with a front layer having a channel for sequentially receiving individual fasteners from a strip of interleaved fasteners and for guiding the fasteners driven from an aperture of the front layer, the invention comprising: a reservoir having a channel for receiving the strip of interleaved fasteners, the reservoir having a leading end coupled to the front layer to feed in sequence individual fasteners from the reservoir channel to the channel of the front layer, the reservoir having a first elongated member with a first side wall having a first inner surface, a first leading end, a first trailing end, a first upper end portion, and a first lower end portion, the first lower end portion of the first elongate member having a housing formed by an outer flange and an inner flange, extending the housing to the of a length of the first elongated member; the reservoir having a second elongated member with a second side wall having a second inner surface, a second leading end, a second trailing end, a second upper end portion, and a second lower end portion, the second lower end portion having the second elongate member an intermediate flange with an inner surface and an outer surface, the first upper end portion of the first elongated member corresponding to the second upper end portion of the second elongated member, and the intermediate flange of the second lower end portion disposable in the formed housing by the inner flange and the outer flange of the first lower end portion, such that the first inner surface of the first side wall faces the second inner surface of the second side wall; a tapered member that can be disposed between the inner surface of the intermediate flange and the inner flange at the front and rear ends of the reservoir to urge the outer surface of the intermediate flange to engage with the outer flange, whereby the first inner surface of the first side wall separates exactly in relation to the second interior surface of the second side wall to form the channel between them in the tank. 16. The clamping drive tool of claim 15, formed a portion of the housing on an inner surface of the outer flange with a curved surface, and the outer surface of the intermediate flange having a curved surface that can be coupled to the curved inner surface of the flange. outer flange by the thrust of the tapered members. The drive tool of claim 15, formed a portion of the housing on an inner surface of the inner flange with a curved surface, and the inner surface of the intermediate flange having a curved surface, the curved surface of the inner flange facing the curved surface of the intermediate flange to form an opening therebetween extending along the reservoir, the tapered members being able to be placed in the aperture. The gripping drive tool of claim 15, the first elongate member having the same cross-sectional configuration along the entire length of the first elongated member, and the second elongate member having the same cross-sectional configuration throughout of the entire length of the second elongated member, whereby the first elongated member and the second elongate member can be formed by extrusion. 19. The clamping drive tool of claim 17, the tapered members are self-tapping screws that can be threadably connected in the opening between the inner flange and the intermediate flange. The gripping drive tool of claim 15 further comprising a rear end plate that can be disposed at a rear end of the tank formed by the first rear end and the first elongate member and the second rear member of the second elongated member. EXTRACT OF THE INVENTION A gripping drive tool, for example a pneumatic finisher, of the type for driving fasteners supplied from a strip of interleaved fasteners arranged in a tool magazine. The reservoir is coupled to a front layer of the clamping drive tool, wherein individual fasteners are fed sequentially into a channel of the front layer and are axially driven through the front layer through a motor blade into the interior of the motor. the piece of work. The clamping drive tool includes an improved work contact element that provides greater visibility of the front layer, and better drive depth adjustment to accurately adjust the work contact element, and an improved hinged front layer assembly, and an improved two-piece reservoir assembly formed with extruded components that provides a channel sized accurately to receive fastener strips, among other improvements.