US3786978A - Electromagnetic stapler - Google Patents

Electromagnetic stapler Download PDF

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Publication number
US3786978A
US3786978A US00259398A US3786978DA US3786978A US 3786978 A US3786978 A US 3786978A US 00259398 A US00259398 A US 00259398A US 3786978D A US3786978D A US 3786978DA US 3786978 A US3786978 A US 3786978A
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United States
Prior art keywords
coil
armature
switch
disposed
cup
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Expired - Lifetime
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US00259398A
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English (en)
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G Manganaro
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Electro Matic Staplers Inc
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Electro Matic Staplers Inc
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/06—Hand-held nailing tools; Nail feeding devices operated by electric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C5/00—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
    • B25C5/10—Driving means
    • B25C5/15—Driving means operated by electric power

Definitions

  • ABSTRACT This electro-magnetic stapler is hand held and has a circuit including a trigger switch, which when actuated, energizes an electro-magnetic load coil to operate the stapler. When the trigger is held in an actuated condition for sufficient time the operation of the stapler is repeated.
  • a safety switch controlled by work engaging means on the stapler prevents operation of the stapler unless said work engaging means contacts the work piece.
  • the staple driving blade is at the front end of the stapler to facilitate locating the stapler relative to the place where the stapling is to be done.
  • the trigger switch assembly permits a smooth operation.
  • the assembly of the stapler permits a pair of split plastic covers to be removed without effecting the innards of the stapler.
  • the plunger movement is shock absorbed at opposite ends of its movement.
  • the circuit parts and components are housed in the stapler and mounted on a non-conductive plate disposed in the handle portion of the stapler.
  • One object of this invention is to improve the electromagnetic stapler disclosed in US. Pat. No. 3,589,587, granted June 29, 1971.
  • Another object of this invention is to provide a stapler of the character described, provided with safety means to prevent operation of the stapler upon actuating the trigger unless the stapler is positioned on the work piece, to prevent accidental operation of the stapler.
  • Yet another object of this invention is to provide a stapler of the character described in which the staple driving blade is at the front end of the stapler so as to facilitate location of the point at which the stapling takes place.
  • Still another object of this invention is to provide an electro-magnetic stapler of the character described which shall be relatively easy to assemble, in which the components of the control circuit are mounted on a non-conductive member affixed to the metal frame of the stapler and housed in the handle portion of the stapler and in which the metal frame is housed in split plastic half-covers attached together and to the frame so as to house the frame.
  • Yet another object of this invention is to provide in an electromagnetic stapler of the character described, a highly improved trigger which shall be easy to actuate and which shall readily return to normal, unactuated condition, when released, and which when actuated, shall close a switch to control energization of an electro-magnet to operate the stapler.
  • a further object of this invention is to provide a strong and durable stapler of the character described which shall be positive in operation and which shall yet be practical, safe and efficient to a high degree in use.
  • FIG. 1 is a side elevational view of an electromagnetic stapler embodying the invention, with parts broken away and in cross-section;
  • FIG. 2 is a cross-sectional view taken on line 2-2 of FIG. 1;
  • FIG. 3 is a cross-sectional view taken on line 3-3 of FIG. 1;
  • FIG. 4 is a front elevational view of the stapler
  • FIG. 5 is a side elevational view of the stapler with the covers removed
  • FIG. 6 is a top plan view of the structure shown in FIG. 5;
  • FIG. 7 is a crosssectional view taken on line 7-7 of FIG. 5;
  • FIG. 8 is a cross-sectional view' taken on line 8-8 of FIG. 5 and;
  • FIG. 9 is a wiring diagram of the circuit for controlling the electro-magnet which operates the staple driving blade or knife:
  • Said stapler 10 designates an electro-magnetically controlled stapler embodying the invention.
  • Said stapler 10 comprises a metal body 11 made of two symmetrical, substantially similar metal frame members 12 and 13.
  • Frame member 12 comprises a horizontally extending lower wall portion 12a disposed in a vertical plane and having an upper horizontal edge 12b, a lower horizontal edge 12c and a rear edge 12d. At the forward end of wall 12a is an outwardly bent portion 12f from which there extends forwardly a downwardly and inwardly converging inclined wall 12g.
  • Member 12 further comprises a vertical wall 12h disposed forwardly and above wall 12f and outwardly of the plane of wall 12a.
  • Wall 12h extends upwardly and forwardly and comprises portions 12hl.
  • Extending from wall 1211 is a part cylindrical wall 12j joined to wall 12g by a lower shoulder 12k and to wall portion 12h3 by a top shoulder 12m.
  • Wall portion l2h2 is disposed forwardly of wall l2j; wall portion l2h3 is disposed above shoulder 12m and wall portion 12h] is disposed rearwardly of wall 12j.
  • a shoulder 1214 Extending inwardly from the rear side of the upper end of part cylindrical wall 12j is a shoulder 1214, from which extends rearwardly a vertical flange 12w in the plane of wall 12a.
  • Frame member 12 also has a top horizontal flange 12n and a rear vertical flange 12p. Frame member 12 also has a rear upstanding arm 12x.
  • Frame member 13 is like member 12 and is fixed thereto in spaced, syrnmetrical relation, in the manner hereinafter appearing. Parts of member 13 corresponding to similar parts of member 12 are designated by numeral I3 followed by a corresponding letter, the same way that the parts of member 12 are designated.
  • Wall portion 12h has a vertical front edge 12s, and a second intermediate vertical edge 12! disposed somewhat rearwardly of said front edge.
  • Portions 12h, 13h of frame members 12, 13 form part of a front head for the stapler, as will appear hereinafter.
  • a trigger housing 15 Disposed between the flange l2w and the corresponding flange 13w of member 13, is a trigger housing 15 made of plastic, open at its underside and having a horizontal wall 15a from which extends downwardly, a front wall 15b, a rear wall 15c and side parallel walls 15d forming a socket open at the bottom and in which a trigger member 18 is slidably mounted. Trigger 18 projects below the trigger housing.
  • a flange 15f lying against the inner surface of flange 12w.
  • a non-conducting plastic plate 17 disposed in a verical plane, and in the shape of a handle, has one end at the inner surface of the flange 13w of frame member 13 and its other end contacts the inner surface of arm 13a of member 13.
  • a micro-switch 28 provided at its underside with a switch actuator button 29 projecting down through a hole 20 in wall 15a.
  • Trigger 18 has limited sliding, up and down movement in the trigger housing socket.
  • one wall 15d of the housing has a vertical slot 22 receiving a transverse pin 23 on the trigger.
  • the lower end of the trigger is curved upwardly as at 18a and projects below the trigger housing 15.
  • Said trigger has two upwardly opening bores 18b receiving compression springs 23a, 24 which bias the trigger downwardly to a nonoperative position.
  • One of the bores 18b is aligned with opening 20.
  • a switch acutating member 24a rests on the spring 23 in the bore which is aligned with the opening 20 and actuator button 29 to operate said button when the trigger is pulled up.
  • the plate 17 and micro-switch 28 are fixed to flange f, flange 12w of member 12 and the corresponding flange 13w of member 13 by transverse screws 25.
  • the trigger housing 15 is formed with a pair of opposed, outwardly extending lugs 15h, which engage complimentary flange 13w of member 13, to properly position the trigger housing relative to frame 12.
  • Said member 30 comprises a front wall 31 contacting front edges 12s and 13s of the frame members 12,13, respectively. Extending rearwardly from the side of front wall 31 are side flanges 32 contacting outer adjacent surfaces of frame members 12,13. Front wall 31 has two vertical slots 33 near its lower end to receive front ends of a staple magazine, as will be explained hereinafter. The lower ends of side walls 32 are inclined downwardly and inwardly, as at 34. Walls 34 extend rearwardly and have upwardly extendingears 35 formed with openings 36 registering with similar openings in walls 12h! and 13111 of members 12, 13 respectively.
  • Front wall 31 of cover 30 has a forwardly recessed, central, vertical portion 31a'terminating short of the upper and lower ends of said front wall.
  • cover members 40 Surrounding the frame members 12, 13 and the front cover 30 are a pair of similar, symmetrical, heat and electrical insulating cover members 40 having meeting edges 41 along a central vertical plane. Said members 40 have lower horizontal portions 40a, front portions 40b, and handle portions 40c so as to form a hand hole 42 into which the trigger 18 projects.
  • the cover members 40 are fixed to each other and to the frame members 12, 13 by a transverse bolt or rod 44 passing through openings 32b, bolt or rod 45 passing through openings 36, and bolt or rod 46 passing through a hole 47m plate 17 and through aligned openings in cover members 40.
  • Arms 12x, 13x of members 12, 13 are fixed to the rear lower end of plate 17 by a bolt 48 which also serves to attach together cover members 40.
  • a spacer sleeve 50 on the rough bolt 48 is interposed between plate 17 and arm 12x.
  • Bolts 44, 46 may have spacer shoulders to keep members 12, 13 in properly spaced relation.
  • a base plate 52 Mounted on shoulders 12k, 13k and between walls l2j, 13] of members 12, 13, is a base plate 52 having a front edge 53 formed with a central flat groove 54. The rear edge 52a of base 52 may be rounded.
  • Mountedon base 52 is a metal cup 55 having a bottom wall 56 from which a cylindrical wall 57 extends upwardly. Bottom wall 56 has a central hole 58.
  • the cup 55 is fixed to base 52 by a central stem 61 passing through hole 58 and hole 62 in base 52, and a top flange 63 contacting the top surface of wall 56.
  • On bottom wall 56 is a central insulating sleeve 65 fitted over said upper flange 63.
  • On wall 56 is an insulating apertured disc 66.
  • an outer insulating cylincover plate having diametrically opposed side lugs 76 projecting through suitable notches 77 at the upper end of said wall 57 and through suitable slots 78 in said walls 12j, 13j of frame members 12, 13.
  • the upper end of central sleeve 65 projects up into a central opening 79 formed in said cover plate as shown in FIGS. 1 and 7.
  • a top fiat disc 81 has outwardly extending flanges 82 projecting into said slots 80.
  • Disc 81 has a central opening 83.
  • Slidably passing through said opening 83 is a stem 84 of an armature 85.
  • armature 85 Pinned to the upper end of stem 84 as at 86 is a spring retainer member 87.
  • Mounted on top of disc 81 is a spring supporting dish 88.
  • a conical coil compression spring 90 which biases the armature upwardly.
  • At the lower end of stem 84 is a thicker cylindical portion 91 forming an upper shoulder 92 on which a rubber like annular bumper 93 rests.
  • Bumper 93 surrounds the stem 84.
  • a plunger portion 95 Below the thicker portion 91 is a plunger portion 95, the lower end of which is slidably received in the upper end of central sleeve 65.
  • the spring raises the armature to its uppermost position.
  • annular shoulder 96 At the upper end of plunger 95 is an annular shoulder 96.
  • a metal disc 97 rests on the shoulders 96 and surrounds the thicker armature portion 91.
  • a second rubber like bumper 98 Surrounding the upper end of plunger 95 is a second rubber like bumper 98 fixed to the underside of disc 97. Rubber of bumper 93 may be fixed to armature 85 to reciprocate therewith and with disc 97.
  • Disc 97 has a forwardly extending lug 99 projecting into the space formed by forwardly recessed wall 31a of the cover 30.
  • a staple driving blade 100 has a slot 100a near its upper end receiving said lug 99. Said blade 100 also slides in groove 54 in plate 52 (See FIG.1). Thus, when the coil 130 is energized, the armature 85 is moved down to drive a staple from the forward part of a staple magazine 101 to be described hereinafter.
  • the plastic covers the upper end of the forward or head part of the stapler as shown at 40d (FIGJ).
  • the plastic covers 40 also cover the front surface of metal cover 30 as at 40c, but cover portion 40c terminates above slots 33 (See FlG.1
  • the staple magazine 10 which may be of any suitable construction.
  • Said magazine 101 way comprise a magazine housing 102 having a flat bottom wall 103 from which parallel side walls 104 extend upwardly (See FlG.3).
  • the wall 103 is located at the lower edges 12c, 130 of members 12, 13.
  • At the front end of side walls 104 are lugs received in slots 33.
  • At the rear end of walls 104 are upright apertured ears 105 receiving a transverse bolt 106 mounted on members 12, 13.
  • a staple guide 110 having a bottom wall 111 fixed centrally to bottom wall 103. Extending up from wall 111 are parallel walls 112. The staples ride on the staple guide and between said guide and the staple magazine housing.
  • the rest of the staple magazine may be of usual construction for driving the foremost staple down between the front wall of front cover 30 and the front end of the staple guide.
  • Walls 104 of the magazine housing 102 are in vertical planes spaced inwardly of members 12, 13.
  • a safety switch actuating device 110a mounted on bolt 45 and between members 12, 13, for oscillation is a safety switch actuating device 110a.
  • Said device 110a comprise a member 111a having similar, parallel side arms 112 in vertical planes passing between walls 104 and members 12, 13.
  • Said side arms 112 are inclined forwardly and downwardly and normally project downward below the underside of walls 12a, 130 just behind the plane of ejection of staples.
  • Said arms 112 are interconnected by a cross portion 113 and have apertured ears through which said bolt 45 passes.
  • a control strip spring 115 Fixed to the upper side of cross-portion 113 is a control strip spring 115 having a forwardly extending arm 116 contacting the underside of member 59 and a rearwardly extending arm 117 disposed horizontally.
  • a support plate 118 Mounted on and between side walls 12a, 13a of members 12, 13 is a support plate 118 on which is mounted a micro-switch 119 provided with an upwardly extending switch actuator button 120 contacting the underside of spring arm 117.
  • the button 120 When the stapler is off a work piece, the button 120 is in an inoperative position.
  • member 110a is rotated to depress the button 120 and thereby actuate the micro-switch 119 for the purpose hereinafter appearing.
  • Electrode 17 On plate 17 are a pair of terminals 125, 126 to which conductor wires 184, 196 are attached. Plate 17 is notched as at 17a between terminals 125, 126. Said wires 184, 196 pass through an opening 129 in plastic cover 40 and form cable 124. A grip bushing 129a in said opening 129 holds the cable 124 tightly in place. A tranverse bolt 124a may pass through aligned holes in portions 12w, 13w of frame members 12, 13 within the cover 40.
  • the electro-magnetic coil 130 is controlled by an electric circuit shown in FIG. 9 of the drawing.
  • This circuit is the same as the circuit shown in FIG. of my US. Pat. No. 3,589,587, except for a change which will be later described.
  • Numerals designating parts of the circuits of FIG. 9 herein, where applicable.
  • All the components of the circuit connected to wires 184, 196 except coil 130 and wires leading thereto and therefrom, are mounted on plate 17, and are covered or embedded insulating material.
  • a switch 123 controlled by actuator 29, in in contact with contact 180.
  • switch 123 disengages from contact 180 and engages contact 181.
  • wire 205 of the former circuit in the present circuit, is broken into parts 205, 205a which may be bridged by a switch 300 which is normally open but is closed to connect wires 205, 205a only when the stapler is on the work piece and switch member 110a has been rotated in a clockwise direction viewed at FIG. 1 of the drawing herein, to operate the actuator button 120 of the micro-switch 119.
  • One side of said load coil 130 is connected by wire 182 to a rectifier anode 183 which is connected by wire 184 to a plug.
  • Switch 123 is connected by wire 185 to a capacitor 186 which is connected by wire 187 to one side of a resistor 188.
  • the other side of the resistor 188 is connected to rectifier 189, by a wire l87ab.
  • Rectifier or anode 189 is connected by wire 190 to said wire 184.
  • Contact is connected by wire 191 to a wire l87ab.
  • the other side of load coil 130 is connected by wire 192 to the anode side of a gated silicon rectifier or SCR 193.
  • the cathode side of said SCR 193 is connected by wire 194 to one side of a rectifier or diode 195.
  • the other side of rectifier or diode 195 is connected to wire 196.
  • Resistor 198 is connected to diode 195 in parallel circuit.
  • wire 192 Connected to wire 192 is a wire 200 connected to one side of a resistor 201.
  • the other side of resistor 201 is connected by wire 202 to one side of a capacitor 203.
  • the other side of capacitor 203 is connected by wire 204 to wire 196.
  • Wire 194 is connected by wires 205,205a in rough switch 309 to a neon lamp 206. Said lamp is connected by wire 207 to contact 181. Wire is connected to wire 187 by resistor 187a so that resistor 187a and capacitor 186 are in parallel circuit.
  • the plug is connected by ground wire 210 to the body 12,13.
  • the wires 210, 184, 196 passing from plug P to the tool comprise the line cord or cable 124.
  • the components of the circuit other than the load coil 130, the trigger switch 123 and contacts 180, 181 are mounted in any suitable manner on the insulating plate 17.
  • the plug has blades 224, 225, 226 connected to wires 210, 184 and 196, respectively.
  • the load coil is locked in place when the body parts are assembled.
  • the switch 123 is normally in engagement with contact 180.
  • the capacitor 203 charges through rectifier or diode 183, load coil 130 and resistor 201, while the tool is not operating.
  • the trigger switch may be closed randomly and when the trigger switch 123 is actuated and moves into engagement with contact 181, capacitor 186 draws current and turns on SCR 193 during the negative cycle of alternating current from an outlet to which the plug 12a is connected. If the switch should close during a positive half cycle of the supply rectifier or diode 189 prevents flow of current until the line reverses polarity. With the line negative gate current flows from the line through the SCR 193 gate, the switch 123, resistor 188 and rectifier or diode 189 to charge capacitor 186.
  • SCR 193 will trigger as soon as gate current flows because the SCRs diode is always forwardly biased by previously charged capacitor 203. With SCR 193 gated on, the discharge time constant of the resistor 201, capacitor 203 network and SCR 193 is long enough to maintain SCR 193 in conduction until the line once more reverses polarity. However, SCR 193 does not conduct until the line turns positive. When line turns positive the neon lamp 206, fires, discharging the capacitor 203 thereby causing the SCR 193 to conduct.
  • the SCR 193 turns off when the line turns negative again. SCR 193 can only conduct when the capacitor 186 draws currentn
  • the delay period between pulses depends on the value of resistor 187a which acts as a bleeder resistor across capacitor 186. The larger the valve of said resistor 1870, the slower the frequency of the pulse.
  • the SCR 193 will always become conductive at the beginning of a positive cycle of the alternating current and will automatically shut off until the next pulse.
  • switch 300 Upon lifting the tool off the work piece, switch 300 opens and no pulsing can take place. This is a safety feature to prevent ejection of staples when the tool is held in the air, that is uplifted from the work piece.
  • the armature 35 is guided at its lower end in the sleeve 65 of the coil, and at its upper end in disc 81.
  • the plate 97 is disposed between the coil and said disc. Hence the armature is guided for true up and down movement, to facilitate its moving the driving blade 100 up and down without jamming.
  • a staple driving tool comprising a body, a load coil in said body, said coil having a central opening, an armature disposed in said body and axially slidable in said hole, for movement by said coil when the coil is energized, staple driving means fixed to said armature and disposed at the front of the body, a staple magazine at the lower end of said body, a trigger switch on said body, and circuit means including said coil and switch, to automatically energize said coil upon actuating said switch, and safety switch means in said circuit and located at the front of the body, to prevent energizing of the coil unless the lower front end of the tool is on a work piece in position for stapling, said body comprising a pair of symmetrical frame members, said load coil being disposed between said frame members, said staple magazine being disposed between said frame members, said trigger switch comprising a trigger housing disposed between said frame members, a trigger slidable in said trigger housing, a micro-switch on said trigger housing, means to actuate said
  • a stapler comprising a body, said body comprising a pair of similar, symmetrically disposed, spaced, metal frame members having lower horizontally extending portions and vertical portions extending upwardly from the front ends of said horizontal portions, a handleshaped insulating plate connecting an upper end of the vertical portion of one of said frame members with the rear end of the horizontal portion of said one frame member, a trigger between said frame members, a micr0-switch above said trigger housing and between said frame members, a trigger slidably mounted in said trigger housing, spring means to lower said trigger; and means to actuate said micro-switch upon raising said trigger.
  • a cup receiving said electro-magnetic coil said cup comprising a bottom wall from which a cylindrical wall extends upwardly, said coil being housed in said cup, a cover on said cup having lugs extending outwardly from said cover and beyond said cylindrical wall, and said frame members having part cylindrical portions contacting said cylindrical wall and formed with slots receiving said lugs.
  • a stapler comprising a body, said body comprising a pair of symmetrically disposed spaced frame members having lower horizontally extending portions and vertically extending portions extending upwardly from the front ends of said horizontally extending portions, said upwardly extending portions having part cylindrical outwardly recessed portions, a cup disposed between said part cylindrical shaped portions, said cup comprising a bottom wall from which a cylindrical wall extends upwardly a load coil housed in said cup having a center hole for slidably receiving a cylindrical armature extending thereabove, a cover at the upper end of said cup and having a center hole, for slidably receiving the lower end of said armaturee, registering with armature, center hole in said coil, said cover having lugs, said cup having notches receiving said lugs, said part cylindrical portions having slots receiving said lugs, and means to attach said frame members to said cup.
  • a staple driving tool comprising a body, an electro-magnetic load coil means in said body, means to fix said coil means to said body, said coil means having a central hole, an axial armature having its lower end slidably received in said hole and guided by said coil means for vertical reciprocation, upper guide means fixed to the body coaxially of said coil means and having means to slidably receive and guide said armature for vertical reciprocation, a member fixed to said armature and disposed between said coil means and said upper guide means and offset forwardly of said armature, a staple drive blade mounted on said member and disposed at the front of the body and parallel to said armature and means on said body to guide said drive blade for vertical movement with said armature in parallel spaced relation thereto.
  • a staple driving too] comprising a body, a load coil in said body, an armature disposed in said body for movement by said coil when the coil is energized, staple driving means on said armature, a staple magazine at the lower end of said body, a trigger switch on said body, and circuit means including said coil and switch to automatically energize said coil upon actuating said switch, means to fix said coil to said body, said coil having means to slidably receive and guide the lower end of said armature, upper guide means fixed to the body, to slidably receive and guide the upper end of said armature, said staple driving means being disposed parallel to and spaced from said armature, and outside said coil and at the front of said body and being fixed to said armature between said coil and upper guide means, said body comprising a pair of spaced, symmetrically disposed frame members, said coil being disposed between said frame members, said upper guide comprising a disc disposed in spaced relation above said coil and between said frame members and above said member fixed to said armature, and
  • a staple driving tool comprising a body, a load coil in said body, an axial armature disposed in said body for movement by said coil when the coil is energized, said armature comprising a lower portion slidably received in said coil, and a top portion extending above said coil, an upper guide means on the body having a hole to slidably receive said top armature portion and means on the body having a hole constituting lower guide means for said lower armature portion, staple driving means fixed to said armature between the upper guide means and lower guide means, a staple magazine at the lower end of said body, a trigger switch on said body, and circuit means including said coil and switch to automatically energize said coil upon actuating said switch, and safety switch means in said circuit to prevent energizing of the coil unless the lower front end of the tool is on a work piece in position for stapling.
  • said staple driving means comprised a substantially flat blade and an attaching member mounted to said blade and to said armature.
  • said drive blade guide means comprising a plate fixed to the bottom of said cup and said staple drive blade guide means being located at the forward end of said plate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
US00259398A 1972-06-05 1972-06-05 Electromagnetic stapler Expired - Lifetime US3786978A (en)

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US25939872A 1972-06-05 1972-06-05

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FR (1) FR2187504B3 (pt)
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US20030183670A1 (en) * 2000-08-25 2003-10-02 Barber John P. Impact device
US20060102687A1 (en) * 2004-07-29 2006-05-18 Schnell John W Fastener Device
US20060266788A1 (en) * 2005-04-15 2006-11-30 Ktf Corporation Electric stapler
US20070158382A1 (en) * 2006-01-06 2007-07-12 Staples The Office Superstore, Llc Stapler
US7395955B2 (en) 2006-01-06 2008-07-08 Staples The Office Superstore, Llc Stapler
US20080251558A1 (en) * 2007-04-12 2008-10-16 Makita Corporation Driving power tool
US20140110450A1 (en) * 2012-10-22 2014-04-24 Illinois Tool Works Inc. Fastener-driving tool including a reversion trigger
US20140110452A1 (en) * 2012-10-22 2014-04-24 Illinois Tool Works Inc. Fastener-driving tool including a reversion trigger
US10532453B2 (en) 2013-12-17 2020-01-14 Illinois Tool Works Inc. Fastener-driving tool including a reversion trigger with a damper
US10596690B2 (en) 2013-06-25 2020-03-24 Illinois Tool Works Inc. Driving tool for driving fastening means into a workpiece
US20200171694A1 (en) * 2018-12-03 2020-06-04 Apex Mfg. Co., Ltd. Electric striking device
US10688641B2 (en) 2013-06-25 2020-06-23 Illinois Tool Works Inc. Driving tool for driving fastening means into a workpiece
US11065747B2 (en) 2015-05-06 2021-07-20 Illinois Tool Works Inc. Drive-in tool with improved safety device
US11491623B2 (en) 2019-10-02 2022-11-08 Illinois Tool Works Inc. Fastener driving tool

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US4033500A (en) * 1976-03-26 1977-07-05 Electro-Matic Staplers, Inc. Electromagnetic stapler and safety trigger therefor
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US4305541A (en) * 1979-10-01 1981-12-15 Swingline Inc. Electronically operated portable nail gun
US4293088A (en) * 1979-10-12 1981-10-06 Swingline Inc. Electronically operated portable fastener driving tool
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US4417681A (en) * 1981-08-19 1983-11-29 Textron Inc. Electronic tacker
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US4500938A (en) * 1983-02-16 1985-02-19 Textron, Inc. Fastener driving device
US4592502A (en) * 1984-11-05 1986-06-03 Black & Decker Inc. Offset electric stapler
US4629108A (en) * 1985-02-22 1986-12-16 Black & Decker, Inc. Mechanical stapler frame and cover assembly
US4700876A (en) * 1985-11-01 1987-10-20 Arrow Fastener Company, Inc. Staple driving tool
US4770335A (en) * 1985-11-01 1988-09-13 Arrow Fastener Company, Inc. Staple driving tool
US4858813A (en) * 1985-11-01 1989-08-22 Arrow Fastener Company, Inc. Staple driving tool
US4946087A (en) * 1985-11-01 1990-08-07 Arrow Fastener Company, Inc. Staple driving tool
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US7540400B2 (en) 2006-01-06 2009-06-02 Staples The Office Superstore, Llc Stapler having a moveable strike plate with lockout mechanism
US7395955B2 (en) 2006-01-06 2008-07-08 Staples The Office Superstore, Llc Stapler
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US7854360B2 (en) * 2007-04-12 2010-12-21 Makita Corporation Driving power tool having a control circuit
US9782880B2 (en) 2012-10-22 2017-10-10 Illinois Tool Works Inc. Fastener-driving tool including a reversion trigger
US20140110452A1 (en) * 2012-10-22 2014-04-24 Illinois Tool Works Inc. Fastener-driving tool including a reversion trigger
US9381633B2 (en) * 2012-10-22 2016-07-05 Illinois Tool Works Inc. Fastener-driving tool including a reversion trigger
US9550288B2 (en) * 2012-10-22 2017-01-24 Illinois Tool Works Inc. Fastener-driving tool including a reversion trigger
US10213911B2 (en) 2012-10-22 2019-02-26 Illinois Tool Works Inc. Fastener-driving tool including a reversion trigger
US11992923B2 (en) 2012-10-22 2024-05-28 Illinois Tool Works Inc. Fastener-driving tool including a reversion trigger
US10926387B2 (en) 2012-10-22 2021-02-23 Illinois Tool Works Inc. Fastener-driving tool including a reversion trigger
US11396095B2 (en) 2012-10-22 2022-07-26 Illinois Tool Works Inc. Fastener-driving tool including a reversion trigger
US20140110450A1 (en) * 2012-10-22 2014-04-24 Illinois Tool Works Inc. Fastener-driving tool including a reversion trigger
US11224959B2 (en) 2013-06-25 2022-01-18 Illinois Tool Works Inc. Driving tool for driving fastening means into a workpiece
US10596690B2 (en) 2013-06-25 2020-03-24 Illinois Tool Works Inc. Driving tool for driving fastening means into a workpiece
US11491622B2 (en) 2013-06-25 2022-11-08 Illinois Tool Works Inc. Driving tool for driving fastening means into a workpiece
US10688641B2 (en) 2013-06-25 2020-06-23 Illinois Tool Works Inc. Driving tool for driving fastening means into a workpiece
US11267115B2 (en) 2013-12-17 2022-03-08 Illinois Tool Works Inc. Fastener-driving tool including a reversion trigger with a damper
US11839961B2 (en) 2013-12-17 2023-12-12 Illinois Tool Works Inc. Fastener-driving tool including a reversion trigger with a damper
US10532453B2 (en) 2013-12-17 2020-01-14 Illinois Tool Works Inc. Fastener-driving tool including a reversion trigger with a damper
US11065747B2 (en) 2015-05-06 2021-07-20 Illinois Tool Works Inc. Drive-in tool with improved safety device
US11667017B2 (en) 2015-05-06 2023-06-06 Illinois Tool Works Inc. Drive-in tool with improved safety device
US11964373B2 (en) 2015-05-06 2024-04-23 Illinois Tool Works Inc. Drive-in tool with improved safety device
US10946547B2 (en) * 2018-12-03 2021-03-16 Apex Mfg. Co., Ltd. Electric striking device
US20200171694A1 (en) * 2018-12-03 2020-06-04 Apex Mfg. Co., Ltd. Electric striking device
US11491623B2 (en) 2019-10-02 2022-11-08 Illinois Tool Works Inc. Fastener driving tool
US11897104B2 (en) 2019-10-02 2024-02-13 Illinois Tool Works Inc. Fastener driving tool

Also Published As

Publication number Publication date
DE2328324A1 (de) 1973-12-13
FR2187504A1 (pt) 1974-01-18
FR2187504B3 (pt) 1976-05-21
IT997276B (it) 1975-12-30
GB1394174A (en) 1975-05-14

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