US3815475A - Fastener driving tool with improved piston return - Google Patents

Fastener driving tool with improved piston return Download PDF

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Publication number
US3815475A
US3815475A US00308128A US30812872A US3815475A US 3815475 A US3815475 A US 3815475A US 00308128 A US00308128 A US 00308128A US 30812872 A US30812872 A US 30812872A US 3815475 A US3815475 A US 3815475A
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United States
Prior art keywords
piston
cylinder
passageway
chamber
pressurized gas
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Expired - Lifetime
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US00308128A
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English (en)
Inventor
F Howard
S Wilson
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Signode Corp
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Signode Corp
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Publication date
Application filed by Signode Corp filed Critical Signode Corp
Priority to US00308128A priority Critical patent/US3815475A/en
Priority to CA179,169A priority patent/CA981401A/en
Priority to GB4533173A priority patent/GB1396640A/en
Priority to DE19732350859 priority patent/DE2350859C3/de
Priority to JP11734473A priority patent/JPS56193B2/ja
Priority to FR7337595A priority patent/FR2257394B1/fr
Application granted granted Critical
Publication of US3815475A publication Critical patent/US3815475A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
    • B27F7/00—Nailing or stapling; Nailed or stapled work
    • B27F7/17—Stapling machines
    • B27F7/30—Driving means
    • B27F7/34—Driving means operated by fluid pressure
    • 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
    • B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
    • B25C1/041—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure with fixed main cylinder
    • B25C1/042—Main valve and main cylinder

Definitions

  • NOJ 308128 obtained from the air supplied to the tool by using high-pressure air to return the piston to its retracted 521 U.S. c1 91/399, 91/401, 91/422 position y after the tool has been operated To this 51 Int. Cl. Fl5b 15/22 end, driving air is direeted threugh the piston and an 1581 Field of Search 91/399, 401, 422 auxiliary chamber leading to the underside of the P ton when the piston is in its fully driven position.
  • This invention relates to a fastener driving tool of the type including a piston reciprocable in a cylinder under the influence of a pressurized gas between a retracted position and a driven position. More particularly, it relates to an improved arrangement for returning the piston to the retracted position utilizing a pressurized gas and maintaining the piston in such position until the next cycle.
  • the present invention provides an air-operated fastener driving tool accomplishing quick positive restoration of the piston of the tool to its retracted position without detracting from the effect of the air under pressure driving the piston to its driven position.
  • the novel tool disclosed herein comprises a housing adapted to contain air under pressure and a cylinder disposed within the housing which defines therewith a chamber adapted to receive air under pressure.
  • the cylinder has spaced ports communicating with the chamber, one of which is located immediately adjacent one end of the cylinder.
  • a piston is slidably mounted within the cylinder and is provided with a fastener driver on the side thereof facing said one end of the cylinder.
  • valve means at the other end of the cylinder for controlling the introduction and exhaust of pressurized air to and from the cylinder above the piston.
  • the piston in response to the pressurized air directed thereto is driven from a retracted position at said other end of the cylinder to a driven position at said one end of the cylinder.
  • the piston defines a first passageway communicating with the driving pressurized air and positioned so that the driving air is transmitted therethrough, through the second port and into the fluid receiving chamber, and then through the first port to the driver side of the piston when the piston is in its driven position.
  • check valve means on the piston for controlling the flow through the passageway defined thereby to prevent fluid in the receiving chamber from returning into the passageway, whereby when the piston is in the driven position and pressurized air moves into the chamber, the air is constrained to move into the cylinder under the piston when it is at theend of the cylinder and upon the exhaust of the driving pressurized air from above thepiston the air acts on the driver side of the piston to return it to its retracted position.
  • piston return is accomplished by an uncomplicated arrangement of superior reliability and with a simplified cycle of operation as compared to prior expedients.
  • FIG. 1 is a side elevational view in partial crosssection showing a fastener driving tool prior to actuation, with the piston in a retracted position
  • FIG. 2 is a partial side elevational view in crosssection of the fastener driving tool of FIG. 1, showing the tool upon completion of its driving cycle, with the piston having moved from its retracted position to its driven position;
  • FIG. 3 is a partial side elevational view in crosssection of the tool of FIG. 1, showing partial restoration of the piston to its retracted position;
  • FIG. 4 is a partial detail view of the piston and cylinder of the tool shown in the driven position of FIG. 2', and
  • FIG. 5 is a partial detail view of the piston and cylinder shown in the retracted position of FIG. 1, immediately after the arrival of the piston at such position.
  • FIG. 1 illustrates a fastener driving tool having a hollow housing 11 and an upright cylinder 12 mounted within a generally cylindrical portion 14 of the housing so as to define a'generally annular region therebetween divided into upper and lower chambers 15 and 16.
  • Lower chamber 16 is completely sealed except for ports 18 immediately adjacent the lower end 19 of the cylinder and ports 20 spaced from ports 18 but also near lower cylinder end 19.
  • a piston assembly 22 carrying a fastener driver 23 is slidably mounted within the cylinder so as to be reciprocable between an upper retracted position adjacent the upper end 24 of cylinder 12 and a lower driven position adjacent cylinder end 19 under the influence of pressurized driving air admitted at upper end 24 of cylinder 12 acting against the upper piston side 26.
  • Piston assembly 22 further includes a valved passageway 28 cooperating with cylinder ports 18 and 20 and chamber 16 to provide compressed air acting over the lower piston side 32 to restore the piston to its upper retracted position, and another valved passageway 97 to exhaust such air once piston assembly 22 arrives at the retracted position as'will be described in greater detail below.
  • the hollow housing 11 of the tool also includes a graspable elongated portion 34 extending horizontally outwardly from a position generally midway of cylindrical portion 14. Both housing portions 14 and 34 are mounted upon an elongated base 36 extending under both housing portions. Included in base 36 is staple magazine assembly 37 holding a row of staples disposed transverse to the path of fastener driver 23, and a guide assembly 38 directly below cylinder 12 and portion 34. Magazine 37 supplies fasteners serially under driver 23 into guide assembly 38 to be driven when the piston assembly 22 with driver 23 descends to lower cylinder end 19.
  • Pressurized air for operating the tool and driving the piston assembly 22 from its upper retracted position to its lower driven position is supplied at one end of housing portion 34 by connector 39 from an external supply of such pressurized air.
  • Intermediate chamber 15 is in direct communication with the interior of housing portion 34, which interior acts as a storage chamber 42 for receiving pressurized air from the external supply.
  • lower chamber 16 is completely sealed, except for ports 18 and 20, by a projection 44 protruding internally from the wall of housing portion 14, and an opposed projection 43 protruding outwardly from cylinder 12.
  • the inside edge of lower end 46 of housing portion 14 is reduced in diameter so as to seal firmly against lower end 19 of cylinder 12.
  • the cylinder is closed off at lower end 19 by a nose assembly 49 having a nose closure member 50 secured to cylinder end 19 and housing end 46.
  • Assembly 49 also'includes a bumper 51 of resilient material secured upon closure member 50 which piston assembly 22 engages in the driven position, and a vertical passageway 52 to allow driver 23 to slidably pass therethrough, as well as a nose gasket 53 to substantially prevent air from escaping through passageway 52.
  • Cylindrical housing portion 14 is flanged at its upper end 56 to provide an annular rim surface 57, while cylinder 12 is of a height such that its upper end 24 terminates just below rim surface 57.
  • Upper cylinder end 24 is also somewhat enlarged in diameter as compared to the remainder of cylinder 12 for reasons which will later be elaborated.
  • valve 27 At upper cylinder end 24, pressurized air is admitted and cut off to and from the interior of cylinder 12 by diaphragm valve assembly 27, which seats against the uppermost surface of the cylinder end 24.
  • Valve 27 has as its principal member a diaphragm 60 supporting the assembly upon rim surface 57 of upper end 56 of housing portion 14. The assembly is secured in position by clamping the generally annular portion of diaphragm 60 overlying rim surface 57 between that surface and a matching lower surface of a cap 61 covering the valve assembly 27.
  • Valve assembly 27 also includes a valve seat plate 63 carried on the lower side thereof, of a diameter equal to that of cylinder end 24, a washer 64 of a diameter less than valve seat plate 63, and a diaphragm back-up plate 65 carried on the upper surface of the diaphragm and of a diameter slightly greater than that of plate 63 and cylinder end 24. Plates 63 and 65 and washer 64 are secured to diaphragm 60 by a hollow bolt 68 extending vertically therethrough the purpose of which will be described hereinafter.
  • a supply arrangement which includes cap 61 and a conduit 79 that extends vertically within housing portion 14 between cap 61 and storage chamber 42 to a control valve 85.
  • Cap 61 provides a lower chamber 70 immediately above valve assembly 27 and an upper chamber '71 above chamber 70 and separated therefrom by a sealing plate 73 secured centrally to cap 61.
  • Lower cap chamber 70 is completely closed except for an opening 78 at one side passing through one portion of upper housing end 56 and diaphragm 60 to communicate with conduit 79, while cap chamber 71 is in direct communication through port 80 with the atmosphere.
  • the arrowed broken lines (FIG. 1) indicate how pressurized air admitted into chamber 70 from conduit 79 biases valve assembly 27 downwardly.
  • Hollow bolt 68 cooperates with valve assembly 27 to furnish an exhaust for cylinder 12 through chamber 71 and port 80 when valve assembly 27 seats against cylinder end 24 and piston assembly 22 returns from its driven to its retracted position.
  • Bolt 68 has an enlarged flanged head 81, an upper shank portion of enlarged outside diameter equal to that of the aperture of seal plate 63, and a lower shank portion of reduced outside diameter that passesthrough the central aperture of plate 73 diaphragm 60 and members 63, of valve assembly 27.
  • a helical spring 82 is located in chamber between seal plate 73 and back-up plate 65. Head 83 secures the bolt to the remainder of valve assembly 27 while also securing the assembly together.
  • Spring 82 I acts to retain valve assembly 27 against cylinder 12 and aids pressurized air in chamber 70 in providing a downward bias upon valve assembly 27.
  • a resilient pad is centrally mounted within the upper wall of chamber 71 over bolt head 81.
  • bolt 68 is slidable upwardly and downwardly within the central aperture of seal plate 73 in accordance with the upward and downward flexing of diaphragm 60. Downward movement of bolt 68 opens an exhaust path through bolt 68 between cylinder 12 and chamber 71 together with port 80, while the upward movement of bolt 68 closes the exhaust path by seating bolt head 81 against pad 75.
  • Valve 85 includes a control ball 88 in a central control chamber 86 with which conduit 79 communicates via side port 87 and port 90 interconnecting chamber 42 with chamber 86.
  • a trigger pin 91 communicates with chamber 86 from below through a 'pin passageway 92, with pin 91 moving ball 88 upwardly when engaged by a trigger assembly 94. Pin 91 fits loosely within passageway 92 and it is confined therein between trigger assembly 94 and ball 88.
  • Exhausting chamber 70 to atmosphere removes the downward bias on valve assembly 27 closing cylinder 12.
  • Pressurized air from chamber 15 acting on the underside of valve assembly 27 overcomes spring 82,- and moves diaphragm 60 upwardly with the high pressure air then flowing into upper end 24 of cylinder 12 to drive piston assembly 22 downwardly to its driven position against bumper 51.
  • the broken-arrowed lines in FIG. 2 show this exhaust of air above valve assembly 27, and the consequent movement of air into cylinder 12 below the valve assembly 27.
  • bolt 68 With the upward movement of the valve assembly, bolt 68 also moves upwardly to close the exhaust path therethrough from cylinder 12 so that no pressurized air escapes from cylinder 12 as the piston assembly 22 is' driven downwardly.
  • pin 91 allows ball 88 to again open conduit 79 to storage chamber 42 to restore the bias of valve assembly 27 against cylinder end 24 to cut off pressurized air to cylinder 12.
  • diaphragm 60 biases bolt 68 downwardly to open an exhaust path from cylinder end 24 to atmosphere through port 80 as previously described.
  • FIGS. 2 and 4 are particularly helpful in appreciating the manner in which the piston is restored to its retracted position in this novel and simple but highly effective manner without subtracting from the available driving force and without the use of further pressurized air beyond that needed to drive the piston assembly to its driven position.
  • passageway 28 extends horizontally from a central cylindrical depression 96 in the upper side 26 of piston assembly 22 across piston assembly 22 to an opening 98 on the periphery of piston assembly 22 between its upper and lower sides 26 and 32.
  • the central depression 96 primarily serves to accommodate securance of the driver 23 by allowing the securing means therefor to be recessed and is not necessary for purposes of restoring the piston to the retracted position.
  • the passageway 28 could also be positioned generally transverse to extend directly from upper piston surface 26 to the peripheryof the piston assembly. Opening 98 is spaced from piston lower side 32 a lesser distance then the spacing between ports 18 and 20 to insure that when opening 98 is even with ports 20, the lower ports 18 are not blocked by the piston assembly.
  • the height of bumper 51 is chosen to insure that when piston assembly 22 bottoms thereon, passageway 28 and ports 20 are in communicating relationship and consequently, present a continuous path allowing the pressurized air above the piston assembly to move into chamber 16.
  • passageway 28 and ports 20 come into such communicating relationship in the driven position of the piston assembly, no pressurized air can escape through passageway 28 from upper side 26 of the piston assembly, since passageway 28 has no outlet until such time, and all other possible routes, including that through passageway 97, are blocked, as will later be explained in more detail.
  • Piston passageway 28 is provided with a one-way check valving arrangement to prevent the return of pressurized air from chamber 16.
  • Such valve arrangement consists of circumferential groove 101 about the periphery of piston assembly 22 intersecting passageway 28, together with a resilient O-ring 103 carried within groove 101 and fitting tightly therewithin to seal the intersecting passageway, but movable in response to pressurized air within passageway 28 to allow such air to pass.
  • Groove 101 is enlarged and recessed so that the O-ring 103 is carried within the periphery of the piston assembly and in a spaced attitude from the wall of cylinder 12.
  • the enlargement of groove 101 helps to insure that the communicating relationship between ports 20 and passageway 28 when the piston assembly is in its driven position is achieved without fail in operation.
  • enlarged groove 101 also enables O-ring 103 to be pushed aside upwardly or downwardly by pressurized air emerging from opening 98.
  • valve assembly 27 closes off cylinder end 24 and moves bolt 68 downwardly to open the exhaust path therethrough from cylinder 12 above piston assembly 22.
  • forces stored in resilient O-ring 103 again tighten the O-ring within groove 101 to close passageway 28 and prevent the escape of pressurized air from chamber 16 through passageway 28.
  • the pressurized air in chamber 16 then expands through lower ports 18 into the space under piston assembly 22 between the piston assembly and nose assembly 49.
  • piston assembly 22 is provided with passageway 97 having an upper opening 99 on the periphery of the piston assembly adjacent upper side 26 thereof.
  • Passageway 97 is controlled, as is passageway 28, by an O-ring 104 in a circumferential groove 102 about piston assembly 22 that intersects passageway 97.
  • the O-ring acts as a one-way check valve.
  • valved passageway 97 is to allow pressurized air beneath piston-assembly 22 to be exhausted upon its arrival at the restored position, and yet prevent pressurized air admitted during the driving stroke to drive piston assembly 22 downwardly from escaping therethrough to lower piston side 32.
  • piston assembly 22 is moving upwardly,
  • O-ring 104 is trapped between groove 102 and the wall below the position of upper O-ring 104 when the piston assembly is in its retracted position.
  • opening 99 of passageway 97 is spaced from piston upper side 26 a lesser distance than the depth of the enlarged end of the cylinder. This allows O-ring 104 to expand outwardly (see FIG. into the annular space defined between the enlarged cylinder portion and the facing upper portion of the piston assembly, under the influence of pressurized air flowing into passageway 97 from the region below piston assembly 22, upon its arrival at its retracted position.
  • the piston assembly 22 is also provided with a further circumferential groove 107 and O-ring 108 located on the periphery of the piston assembly near the lower side 32 thereof.
  • This O-ring provides sufficient frictional engagement between the piston assembly and the inside wall of cylinder 12 so that once piston assembly 12 has been restored to its retracted position, it will not move downwardly unless acted upon by pressurized air. Then with such restoration and the re-seating of O- ring 104 within groove 103 as described above, the tool is again ready for another operating cycle.
  • Such operating cycle begins with the opening of valve 27 upon manipulation of trigger 94 to exhaust pressurized air above valve 27 through control valve 85, admitting pressurized air into upper cylinder end 24 to drive piston assembly 22 down to its driven position. At this point, the pressurized driving air moves through passageway 28 and ports 20 into chamber 16 and then under piston assembly 22. Meanwhile when the trigger is released control valve 85 reestablishes pressurized air above valve 27, to close valve 27 and cut off pressurized air above piston assembly 22. When valve 27 moves downwardly bolt 68 then opens to exhaust the air above the piston.
  • Resilient O- ring 103 thereupon closes passageway 28 to prevent pressurized air in chamber 16 from escaping there through and piston assembly 22 moves upwardly under the influence of air received through 'ports 18 to move piston 22 back to its retracted position.
  • the pressurized air under the cylinder is then exhausted to atmosphere "through passageway 97 past O-ring 104 and bolt 68.
  • a gas-operated fastener driving tool comprising: a housing adapted to contain gas under pressure; a cylinder disposed within said housing and defining with said housing a chamber adapted to receive gas under pressure; a piston slidably mounted within said cylinder and provided with a fastener driver on one side thereof facing one end of said cylinder, said cylinder defining spaced first and second ports communicating with said chamber, with said first port being located immediately adjacent said one end of said cylinder and in communication with the driver side of said piston; valve means for controlling the introduction and exhaust of pressur ized gas to and from said cylinder above said piston, said piston in response to said pressurized gas being driven from a retracted position at the other end of said cylinder to a driven position at said one end of said cylinder, said piston defining a first passageway communicating with said driving pressurized gas and positioned so that said driving gas is transmitted through said second port and into said chamber when said piston is in said driven position; and first check valve means on said piston for controlling said first passageway to prevent said gas in said
  • a fastener tool as in claim 1' in which said cylinder is enlarged in diameter at said other end thereof so as to define with a portion of said piston an annular space therebetween when said piston is in said retracted position, and in which said second passageway communicates with said annular space when said piston arrives at said retracted position to release said pressurized gas from said one piston side into said space.
  • said second check valve is comprised of a groove about the periphery of said piston together with an O-ring carried within said groove and bearing against said cylinder, said groove intersecting one end of said second passageway and positioned adjacent said other side of said piston, said O-ring expanding into said annular space upon the restoration of said piston to said retracted position to release said pressurized gas from said one piston side.
  • a fastener tool as in claim ll which further includes means for frictionally supporting said piston within said cylinder to restrain said piston from moving unless positively acted upon by pressurized gas.
  • a gas-operated fastener driving tool comprising:
  • a housing adapted to contain gas under pressure; an upstanding cylinder disposed within said housing and defining with said housing a chamber adapted to receive gas under pressure, said cylinder defining spaced first and second ports communicating with said chamber, with said first port being located immediately adjacent the lower end of said cylinder; a piston slidably mounted within said cylinder and provided with a fastener driver on the lower side thereof facing said lower cylinder end; valve means for controlling the introduction and exhaust of pressurized gas to and from said cylinder above said piston, said piston in response to said pressurized gas being driven on the upper side thereof from a retracted position at the upper end of said cylinder to a driven position at said lower end of said cylinder, said piston defining a first passageway communicating with said driving pressurized gas and extending transversely across said piston to a first opening on the periphery of said piston between said upper and lower sides thereof, said opening being spaced from said lower side of said piston a lesser distance than the spacing between said first and second ports; bumper means associated with said lower cylinder

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US00308128A 1972-11-20 1972-11-20 Fastener driving tool with improved piston return Expired - Lifetime US3815475A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US00308128A US3815475A (en) 1972-11-20 1972-11-20 Fastener driving tool with improved piston return
CA179,169A CA981401A (en) 1972-11-20 1973-08-20 Fastener driving tool with improved piston return
GB4533173A GB1396640A (en) 1972-11-20 1973-09-27 Fastener driving tool with piston return
DE19732350859 DE2350859C3 (de) 1972-11-20 1973-10-10 Ventileinrichtung für den Rückhubraum des Arbeitszylinders eines Druckluftnaglers o.dgl
JP11734473A JPS56193B2 (it) 1972-11-20 1973-10-18
FR7337595A FR2257394B1 (it) 1972-11-20 1973-10-22

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Application Number Priority Date Filing Date Title
US00308128A US3815475A (en) 1972-11-20 1972-11-20 Fastener driving tool with improved piston return

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US3815475A true US3815475A (en) 1974-06-11

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US00308128A Expired - Lifetime US3815475A (en) 1972-11-20 1972-11-20 Fastener driving tool with improved piston return

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US (1) US3815475A (it)
JP (1) JPS56193B2 (it)
CA (1) CA981401A (it)
FR (1) FR2257394B1 (it)
GB (1) GB1396640A (it)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4117767A (en) * 1976-01-20 1978-10-03 Joh. Friedrich Behrens Aktiengesellschaft Compressed air-operated fastener driver
US4165676A (en) * 1977-04-28 1979-08-28 Carl Siegmann Firing safety for a pneumatic nailer
EP0052368A2 (en) * 1980-11-19 1982-05-26 Signode Corporation Bumperless gun nailer
US4378084A (en) * 1979-08-09 1983-03-29 Fasco S.R.L. Release mechanism for a riveting gun comprising an overhead valve
US4483474A (en) * 1981-01-22 1984-11-20 Signode Corporation Combustion gas-powered fastener driving tool
US4549344A (en) * 1980-11-19 1985-10-29 Signode Corporation Method of driving fasteners with a bumperless pneumatic gun
US4629128A (en) * 1985-06-17 1986-12-16 The Scott & Fetzer Company Apparatus for cleaning clogged drain lines
US4747338A (en) * 1983-06-13 1988-05-31 Sencorp Pneumatic gun having improved firing valve
US4932480A (en) * 1988-12-16 1990-06-12 Illinois Tool Works Inc. Driving tool with air-cooled bumper
US4986164A (en) * 1983-06-13 1991-01-22 Senco Products, Inc. Pneumatic gun having improved firing valve
US5031508A (en) * 1990-09-05 1991-07-16 Emhart Inc. Rivet setting tool
US5524807A (en) * 1994-12-02 1996-06-11 Bullard; Robert Fastener tool
EP0805003A2 (de) * 1996-05-03 1997-11-05 Beto-Tornado GmbH Pulverkraftbetriebenes Bolzensetzgerät
US5860580A (en) * 1996-05-03 1999-01-19 Illinois Tool Works Inc. Piston retention device for combustion-powered tools
US6092710A (en) * 1998-06-09 2000-07-25 Berner Gmbh Explosive powder charge operated bolt-setting tool
US6123242A (en) * 1996-05-03 2000-09-26 Berner Gmbh Explosive powder charge operated bolt-setting tool
US20030173393A1 (en) * 2001-06-28 2003-09-18 Gerhard Kral Expulsion device actuated by a pressure medium
US6648202B2 (en) 2001-02-08 2003-11-18 Black & Decker Inc. Pneumatic fastening tool
US20030222113A1 (en) * 2002-04-05 2003-12-04 Stanley Fastening Systems, L.P. Pneumatic tool with self-sealing diaphragm valve system
US20050218180A1 (en) * 2004-04-02 2005-10-06 Paul Gross Lower bumper configuration for a power tool
US20060016845A1 (en) * 2004-07-09 2006-01-26 Yoshinori Ishizawa Fastener driving tool
US20080028925A1 (en) * 2006-06-01 2008-02-07 Markus Lingemann Piston-cylinder unit
US20080272326A1 (en) * 2007-05-02 2008-11-06 Buck William C Driving tool and head valve assembly for a driving tool
US20090072005A1 (en) * 2007-08-31 2009-03-19 Illinois Tool Works Inc. Enhanced pneumatic tool actuation device
US20090218383A1 (en) * 2006-06-01 2009-09-03 Ricardo Segura Control Valve Assembly for Fastener-Driving Tool
US20100243286A1 (en) * 2006-08-24 2010-09-30 Max Co., Ltd. Power tool and cushioning mechanism thereof
US20100327040A1 (en) * 2009-06-29 2010-12-30 Max Co., Ltd. Driving tool and bumper of driving tool
US20110296739A1 (en) * 2009-03-04 2011-12-08 Craig Richard Bond Trap
US20140027487A1 (en) * 2012-07-25 2014-01-30 Richard M. Patterson Drywall Corner Bead Nailer and Method
US20150013534A1 (en) * 2008-12-24 2015-01-15 Globalforce Ip Limited Actuation system
WO2015069363A1 (en) 2013-11-06 2015-05-14 Illinois Tool Works Inc. Fastener driving tool with an automatic nose chamber guide member
WO2018070881A1 (en) * 2016-10-11 2018-04-19 S-Gun Limited A pneumatic or hydraulic mechanism

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US3313213A (en) * 1965-05-20 1967-04-11 Fastener Corp Fastener driving tool
US3329068A (en) * 1966-04-15 1967-07-04 Signode Corp Pneumatic piston return system for impact tools
US3638534A (en) * 1969-08-18 1972-02-01 Fastener Corp Fastener driving tool with improved pneumatic piston retaining means
US3683746A (en) * 1970-06-25 1972-08-15 Fastener Corp Fastener driving tool

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3313213A (en) * 1965-05-20 1967-04-11 Fastener Corp Fastener driving tool
US3329068A (en) * 1966-04-15 1967-07-04 Signode Corp Pneumatic piston return system for impact tools
US3638534A (en) * 1969-08-18 1972-02-01 Fastener Corp Fastener driving tool with improved pneumatic piston retaining means
US3683746A (en) * 1970-06-25 1972-08-15 Fastener Corp Fastener driving tool

Cited By (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4117767A (en) * 1976-01-20 1978-10-03 Joh. Friedrich Behrens Aktiengesellschaft Compressed air-operated fastener driver
US4165676A (en) * 1977-04-28 1979-08-28 Carl Siegmann Firing safety for a pneumatic nailer
US4378084A (en) * 1979-08-09 1983-03-29 Fasco S.R.L. Release mechanism for a riveting gun comprising an overhead valve
EP0052368A2 (en) * 1980-11-19 1982-05-26 Signode Corporation Bumperless gun nailer
EP0052368A3 (en) * 1980-11-19 1983-08-10 Signode Corporation Bumperless gun nailer
US4549344A (en) * 1980-11-19 1985-10-29 Signode Corporation Method of driving fasteners with a bumperless pneumatic gun
US4483474A (en) * 1981-01-22 1984-11-20 Signode Corporation Combustion gas-powered fastener driving tool
US4747338A (en) * 1983-06-13 1988-05-31 Sencorp Pneumatic gun having improved firing valve
US4986164A (en) * 1983-06-13 1991-01-22 Senco Products, Inc. Pneumatic gun having improved firing valve
US4629128A (en) * 1985-06-17 1986-12-16 The Scott & Fetzer Company Apparatus for cleaning clogged drain lines
US4932480A (en) * 1988-12-16 1990-06-12 Illinois Tool Works Inc. Driving tool with air-cooled bumper
US5031508A (en) * 1990-09-05 1991-07-16 Emhart Inc. Rivet setting tool
US5524807A (en) * 1994-12-02 1996-06-11 Bullard; Robert Fastener tool
EP0805003A2 (de) * 1996-05-03 1997-11-05 Beto-Tornado GmbH Pulverkraftbetriebenes Bolzensetzgerät
EP0805003A3 (de) * 1996-05-03 1998-02-04 Beto-Tornado GmbH Pulverkraftbetriebenes Bolzensetzgerät
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US6085958A (en) * 1996-05-03 2000-07-11 Berner Gmbh Explosive powder charge operated bolt-setting tool
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Also Published As

Publication number Publication date
JPS4981975A (it) 1974-08-07
DE2350859B2 (de) 1976-01-08
JPS56193B2 (it) 1981-01-06
FR2257394A1 (it) 1975-08-08
GB1396640A (en) 1975-06-04
CA981401A (en) 1976-01-13
DE2350859A1 (de) 1974-06-12
FR2257394B1 (it) 1978-11-17

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