EP0054782B1 - Buffer system in impact tools - Google Patents

Buffer system in impact tools Download PDF

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Publication number
EP0054782B1
EP0054782B1 EP81110132A EP81110132A EP0054782B1 EP 0054782 B1 EP0054782 B1 EP 0054782B1 EP 81110132 A EP81110132 A EP 81110132A EP 81110132 A EP81110132 A EP 81110132A EP 0054782 B1 EP0054782 B1 EP 0054782B1
Authority
EP
European Patent Office
Prior art keywords
cushioning
cushioning element
characterised
cylinder
element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81110132A
Other languages
German (de)
French (fr)
Other versions
EP0054782A2 (en
EP0054782A3 (en
Inventor
Gerhard Farian
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Reich Karl M Maschinenfabrik
Original Assignee
Reich Karl M Maschinenfabrik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE3047662 priority Critical
Priority to DE3047662A priority patent/DE3047662C2/de
Application filed by Reich Karl M Maschinenfabrik filed Critical Reich Karl M Maschinenfabrik
Publication of EP0054782A2 publication Critical patent/EP0054782A2/en
Publication of EP0054782A3 publication Critical patent/EP0054782A3/en
Application granted granted Critical
Publication of EP0054782B1 publication Critical patent/EP0054782B1/en
Application status is Expired legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25CHAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00Hand-held nailing tools; Nail feeding devices
    • B25C1/04Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
    • B25C1/047Mechanical details

Description

  • Die Erfindung bezieht sich auf ein Puffersystem gemäss Oberbegriff von Anspruch 1. The invention relates to a buffer system according to the preamble of claim. 1
  • Aus der DE-PS 2 339163 ist dazu ein Einschlaggerät zum Einschlagen von Nägeln oder dgl. bekannt, dessen Puffersystem aus einem verhältnismässig weichen Pufferelement aus volumenkompressiblem Werkstoff und einem damit zusammenwirkenden harten Pufferelement besteht, das mit seiner Kontaktfläche voll auf dem Boden des Zylinderfusses aufliegt. is known from DE-PS 2 339163 to an impact device for hammering in nails or the like. known, the buffer system consists of a relatively soft cushion member of volumenkompressiblem material and a cooperating hard buffer element which rests with its contact face fully to the bottom of the cylinder foot.
  • Dieses Puffersystem ist in der Lage, Schläge mit Drucküberschuss und Leerschläge sicher und bei hoher Lebensdauer aufzufangen. This buffer system is able to absorb blows with excess pressure and spaces safe and a long service life. Durch den Kontakt zwischen hartem Pufferelement und Boden des Zylinderfusses entsteht jedoch bei jedem Schlag ein unangenehmer und den Bedienungsmann störender Körperschall. By contact between hard buffer member and the bottom of the cylinder foot but an unpleasant and disturbing the operator borne noise is created on every shot. In extremen Fällen tritt auch eine erhebliche Verformung des harten Pufferelements ein, das dann durch innere Reibung und Erwärmung beschädigt werden kann. In extreme cases, a significant deformation of the hard buffer element occurs, which can then be damaged by internal friction and heat.
  • Aufgabe der vorliegenden Erfindung ist daher die Schaffung eines Puffersystems der eingangs genannten Art, das den Schlagüberschuss bei möglichst geringem Körperschall und bei möglichst hoher Lebensdauer sicher auffängt und vernichtet. Therefore, an object of the present invention is to provide a buffer system of the type mentioned which ensures collects the blow surplus at the lowest possible structure-borne sound and at the highest possible life and destroyed.
  • Diese Aufgabe wird erfindungsgemäss durch die im kennzeichnenden Teil des Anspruchs 1. angegebenen Merkmale gelöst. This object is achieved by the characterizing portion of claim 1. stated features.
  • Die bewegbare Anordnung des harten Pufferelements bedeutet die Zwischenschaltung einer Reibungsstufe zwischen der weichen Federkennlinie des weichen Pufferelements und der harten Federkennlinie des harten Pufferelements. The movable arrangement of the hard buffer element means the interposition of a friction level between the soft spring characteristics of the soft cushioning member and the hard spring characteristic of the hard buffer element. Beim normalen Nageln mit wenig Drucküberschuss wird nur der weiche Teil der Federkennlinie ausgenützt, erst bei Leerschlägen kommt der harte Teil zum Tragen. In the normal nailing with little excess pressure only the soft part of the spring characteristic is utilized only when blank firing the hard part comes in. Dies führt zu einer deutlichen Reduzierung des Körperschalls beim normalen Nageln, dessen Verminderung bis zu 6 dB, also nahezu eine Halbierung betragen kann. This leads to a significant reduction of the impact sound in normal nailing, the reduction of up to 6 dB, so it can be almost halved.
  • Bei einer vorteilhaften Ausführungsform ist das harte Pufferelement mit Vorspannung im Zylinder angeordnet, so dass es beim Zusammendrücken vom weichen Pufferelement noch stärker an den Aussenring angedrückt wird. In an advantageous embodiment, the hard cushion member is arranged with prestressing in the cylinder, so that it is even more pressed against the outer ring upon compression of the soft cushion member. Beim weiteren Zusammendrücken wird dann die überschüssige Schlagenergie durch Reibung an den Kontaktflächen zwischen hartem Pufferelement und Zylinderfuss bzw. Innenwand des Zylinders vernichtet, wobei die dabei entstehende Wärme gut abgeführt werden kann. Upon further squeezing the excess impact energy is then destroyed by the friction at the contact surfaces between the hard cushion member and cylinder base or inner wall of the cylinder, wherein the resulting heat can be dissipated.
  • Liegt das harte Pufferelement mit seiner ganzen Kontaktfläche auf dem Boden des Zylinderfusses auf, dann wirkt es wie bei der bekannten Ausführung als harter, verformbarer Puffer, der durch innere Reibung stark erwärmt wird. If the hard cushion member with its entire contact surface on the bottom of the cylinder on the foot, it acts as in the known embodiment as a tough, deformable buffer which is strongly heated by internal friction. Diese innere Erwärmung kann zwar auch zur Zerstörung des harten Pufferelements führen, gleichzeitig tritt jedoch eine Erhöhung des Körperschalles auf, der dem Bedienungsmann zeigt, dass ein Auswechseln des Pufferelements nötig ist. While these internal heating can also lead to the destruction of the hard buffer member, at the same time, however, an increase in body sound occurs, which indicates to the operator that a replacement of the buffer element is necessary. Damit wird eine Beschädigung oder Zerstörung von Teilen des Einschlaggerätes sicher vermieden. Therefore damage or destruction of parts of the steering device is reliably avoided.
  • Wird das Einschlaggerät in bekannter Weise mit einem Luftspeicher versehen, der zur Speicherung der für den Rückhub des Schlagkolbens nötigen Druckluft dient, dann bietet die erfindungsgemässe Ausführung des Puffersystems den weiteren Vorteil, dass diese Druckluft beim Rückhub des Schlagkolbens nur langsam und damit leiser aus dem Zylinder entweicht, weil das weiche Pufferelement auf dem harten Pufferelement aufliegt und damit den Querschnitt der Entlüftungsöffnung stark beschränkt. If the wrapping machine provided in a known manner with an air reservoir, which is used to store the necessary for the return stroke of the ram pressure air, the inventive design of the buffer system has the further advantage that this compressed air during the return stroke of the ram slowly and quietly out of the cylinder escapes because the soft buffer element rests on the hard cushion member and thus severely restricted the cross-section of the vent.
  • Im folgenden ist ein Ausführungsbeispiel der Erfindung unter Bezugnahme auf die Zeichnungen näher beschrieben. In the following an embodiment of the invention is described in more detail with reference to the drawings.
    Es zeigen: Show it:
    • Fig. 1 Längsschnitt durch ein Einschlaggerät mit Puffersystem. Fig. 1 a longitudinal section through an impact device with the buffer system.
    • Fig. 2 Längsschnitt durch das Puffersystem, linke Hälfte entspannt, rechte Hälfte zusammengedrückt. Fig. 2 a longitudinal section through the buffer system, left half relaxed, compressed right half.
  • Bei dem in Fig. 1 teilweise dargestellten Einschlaggerät für Nägel oder dgl. ist in einem Gehäuse 1 ein Zylinder 2 angeordnet, in dem ein Schlagkolben 3 mit einem Schlagstössel 4 verschiebbar gelagert ist. In the partially shown in Fig. 1 Driving tool for nails or the like. In a housing 1, a cylinder 2 is arranged, in which a percussion piston is mounted displaceably with a punch ram 4 3. Durch einen Händgriff 5 wird dem Einschlaggerät Druckluft von einer nicht dargestellten Druckluftquelle zugeführt und gelangt nach Betätigung von Abzugshebel 6 durch Betätigung eines rohrförmigen-Ventilschiebers 7 in den Innenraum von Zylinder 2, wo die Druckluft den durch eine elastische Rastvorrichtung 8 festgehaltenen Schlagkolben 3 in Richtung Zylinderfuss 9 beschleunigt. By a Händgriff 5 the impact device pressure air is supplied from an unillustrated compressed air source and, after actuation of trigger lever 6 by actuation of a tubular valve slide 7 in the interior of cylinder 2 where the compressed air the restrained by an elastic locking device 8 percussion piston 3 in the direction of cylinder base 9 accelerated. Dabei wird in bekannter Weise durch Schlagstössel 4 der Nagel 10 in ein nicht dargestelltes Werkstück eingeschlagen. In this case, wrapped in a known manner by actuating pin 4 of the nail 10 in a not shown workpiece. Weitere Nägel 10 sind in einem Magazin 11 bereitgestellt. Additional nails 10 are provided in a magazine. 11
  • Der Zylinder 2 ist von einem Luftspeicher 12 umgeben, in den beim Schlaghub in bekannter Weise Druckluft durch Öffnungen 13 und 14 in Zylinder 2 gelangt. The cylinder 2 is surrounded by an air reservoir 12, pressure air enters the at impact stroke in known manner through openings 13 and 14 in the cylinder. 2 Diese Druckluft wirkt nach Loslassen von Abzugshebel 6 auf die Unterseite von Schlagkolben 3 und befördert diesen wieder in seine Ausgangsstellung. This compressed air acts upon release of trigger 6 to the bottom of percussion piston 3 and conveys it to its original position.
  • Am unteren Ende eines Schlaghubes trifft der Schlagkolben 3 auf ein Puffersystem 15, das in Fig. 2 vergrössert dargestellt ist. At the lower end of a Schlaghubes the impact piston 3 meets a buffer system 15, which is shown enlarged in Fig. 2. Es besteht aus einem ersten, hartelastischen Pufferelement 16, das zweckmässigerweise aus vernetztem Polyurethan besteht. It consists of a first, hard-elastic buffer member 16, which is suitably cross-linked polyurethane. Seine gegen den konischen Boden 17 von Zylinderfuss 9 gerichtete Kontaktfläche 18 ist ebenfalls kegelstumpfartig ausgebildet, sein Kegelwinkel ist jedoch kleiner als der Kegelwinkel des Bodens. His directed against the conical bottom 17 of cylinder 9 foot contact surface 18 is also frustoconical, but its cone angle is smaller than the cone angle of the soil. Bei entspannter Stellung des Puffersystems besteht daher zwischen Boden 17 und Kontaktfläche 18 ein Zwischenraum 19, während Pufferelement 16 am Bodengrund 20 anliegt. In a relaxed position of the buffer system, therefore, exists between the base 17 and contact surface 18 a clearance 19, while the buffer member 16 rests on the ground 20th
  • Das Pufferelement 16 weist weiterhin einen zylindrischen Abschnitt 21 auf, dessen Aussendurchmesser grösser ist als der Innendurchmesser von Zylinder 2, so dass das Pufferelement 16 mit Vorspannung im Zylinder 2 angeordnet ist. The buffer member 16 further includes a cylindrical portion 21 whose outside diameter is greater than the inner diameter of cylinder 2 so that the buffer member 16 is arranged with bias in the cylinder. 2
  • Gegen den Schlagkolben 3 gerichtet sitzt auf dem ersten Pufferelement 16 ein zweites Pufferelement 22 auf, das vorzugsweise aus zelligem Polyurethan-Elastomer besteht. directed against the percussion piston 3, a second buffer member 22 is seated on the first buffer element 16, which preferably consists of a cellular polyurethane elastomer. Durch die zellige Struktur wird in bekannter Weise eine progressive Federkennlinie erreicht, seine gegen den Schlagkolben 3 gerichtete Stirnfläche 23 ist nach aussen abgeschrägt. Due to the cellular structure is achieved a progressive spring characteristic in a known manner, its directed against the percussion piston 3 end surface 23 is bevelled outwards. Der Schlagkolben 3 weist eine zylindrische Vertiefung 24 auf, deren Innendurchmesser etwas grösser ist als der Aussendurchmesser von Pufferelement 22. The impact piston 3 has a cylindrical recess 24, whose inner diameter is slightly larger than the outer diameter of buffer member 22nd
  • Fig. 2, linke Hälfte, zeigt das Puffersystem 15 in entspanntem Zustand, wobei der Schlagkolben 3 gerade das zweite Pufferelement 22 berührt. Fig. 2, left half, shows the buffer system 15 in a relaxed state, wherein the impact piston 3 just touches the second buffer element 22. Zwischen Boden 17 und Kontaktfläche 18 besteht ein Zwischenraum 19. Zur Vernichtung der überschüssigen Schlagenergie wird jetzt das Puffersystem 15 zusammengedrückt, wie Fig. 2, rechte Hälfte, zeigt. Between bottom 17 and contact surface 18 there is a gap 19. In order to destroy the excess impact energy of the buffer system 15 is now compressed, as shown in FIG. 2, right half shows. Dabei wird das erste Pufferelement 16 durch das verdichtete zweite Pufferelement 22 so gespreizt, dass sich sein zylindrischer Abschnitt 21 über die Vorspannung hinaus gegen Zylinder 2 presst. Here, the first buffer member 16 is expanded by the compressed second buffer member 22 so that its cylindrical portion 21 press-fitted over the bias out against the cylinder. 2 Beim weiteren Abbremsen des Schlagkolbens 3 verschiebt sich einmal der zylindrische Abschnitt 21 gegen Zylinder 2 und Teile der Kontaktfläche 18 gegen den Bodengrund 20 unter erheblicher Reibung, wobei Energie unter Bildung von Wärme vernichtet wird. Upon further braking of the percussion piston 3, once the cylindrical portion 21 slides against the cylinder 2 and parts of the contact surface 18 against the bottom of base 20 with considerable friction, whereby energy is dissipated with the formation of heat. Diese Wärme lässt sich über die umgebenden Metallteile gut abführen. This heat can dissipate well above the surrounding metal parts.
  • Liegt Kontaktfläche 18 vollständig am Boden 17 auf, dann wirkt das erste Pufferelement 16 wie seither bekannt als harter Puffer, der unter innerer Verformung noch weitere überschüssige Schlagenergie aufnehmen kann. If the contact surface 18 is completely on the ground 17, then the first buffer element 16 such as since acts known as hard buffer which still can absorb more impact energy under excess internal deformation.
  • Bei der eben beschriebenen Reibungsphase des Puffersystems 15 wird wenig Körperschall erzeugt bei äusserster Schonung der Pufferelemente. In the just described friction phase of the buffer system 15 little impact sound is generated at extreme conservation of the buffer elements. Tritt nach einer gewissen Zeit doch eine Abnützung der Pufferelemente ein, dann verstärkt sich der Körperschall und der Bedienungsmann wird darauf aufmerksam gemacht, dass die Pufferelemente ausgewechselt werden müssen. If after a certain time, but wear of the buffer elements, then the body is sound and the operator amplifies it is pointed out that the buffer elements have to be replaced.

Claims (7)

1. Cushioning system in nailing machines for knocking in nails etc., by means of a percussion piston (3) located in a cylinder (2) and operated by compressed air, having the following features:
a) the cushioning system (15) is located at the impact end of the cylinder (2) in order to absorb the excess impact energy of the percussion piston (3)
b) it consists of at least two cushioning elements (16 and 22) of different hardness
c) an initial hard elastic cushioning element (16) is supported on a base (17) adjacent to the cylinder (2)
d) a second, soft elastic cushioning element (22) acts in conjunction with the first cushioning element (16)

characterised in that a space (19) is provided between one part of the contact surface (18) of the first cushioning element (16) and the base (17), so that at least part of the first cushioning element (16), with its contact surface facing the cylinder leg (9), is moveable.
2. Cushioning system according to Claim 1, characterised in that the first cushioning element (16) is in the form of a cup-shaped truncated cone, at least part of which is supported by the conical base (17).
3. Cushioning system according to Claim 2, characterised in that the conical angle of the contact surface (18) of the first cushioning element (16) is smaller than the conical angle of the base (17).
4. Cushioning system according to one of the Claims 1 to 3, characterised in that the first cushioning element (16) has a cylindrical section (21) on its external circumference, said section having an external diameter which is greater than the internal diameter of the cylinder (2) around the first cushioning element (16).
5. Cushioning system according to one of the Claims 1 to 4, characterised in that the second cushioning element (22) is located on the first cushioning element (16).
6. Cushioning system according to Claim 5, characterised in that the percussion piston (3) has an open recess (24) which is open to the cushioning system (15), the internal diameter of said recess being greater than the external diameter of the second cushioning element (22).
7. Cushioning system according to Claim 6, characterised in that the end face (23) of the second cushioning element (22) faces the percussion piston (3) and is bevelled outwards.
EP81110132A 1980-12-18 1981-12-04 Buffer system in impact tools Expired EP0054782B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE3047662 1980-12-18
DE3047662A DE3047662C2 (en) 1980-12-18 1980-12-18

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT81110132T AT15777T (en) 1980-12-18 1981-12-04 Buffer system at weft devices.

Publications (3)

Publication Number Publication Date
EP0054782A2 EP0054782A2 (en) 1982-06-30
EP0054782A3 EP0054782A3 (en) 1983-07-20
EP0054782B1 true EP0054782B1 (en) 1985-09-25

Family

ID=6119438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81110132A Expired EP0054782B1 (en) 1980-12-18 1981-12-04 Buffer system in impact tools

Country Status (6)

Country Link
US (1) US4441644A (en)
EP (1) EP0054782B1 (en)
JP (1) JPH0211388B2 (en)
AT (1) AT15777T (en)
CA (1) CA1157201A (en)
DE (1) DE3047662C2 (en)

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3119956C2 (en) * 1981-05-20 1984-11-22 Joh. Friedrich Behrens Ag, 2070 Ahrensburg, De
DE3232120A1 (en) * 1982-08-28 1984-03-01 Bosch Gmbh Robert Electromagnetic operated einschlaggeraet
DE3412659C2 (en) * 1983-06-27 1989-10-19 Hochstrasser, Geb. Wack, Elisabeth
GB2149712A (en) * 1983-11-14 1985-06-19 Umberto Monacelli Shock absorber arrangements for use in fastener driving apparatus
DE3437019C2 (en) * 1984-10-09 1994-01-20 Bosch Gmbh Robert Electromagnetic powered steering device with an air damper
DE3702364C2 (en) * 1987-01-28 1989-08-31 Moskovskoe Naucno-Proizvodstvennoe Ob"Edinenie Po Mechanizirovannomu Stroitel'nomu Instrumentu I Otdelocnym Masinam, Chimki Moskovskoj Oblasti, Su
US4932480A (en) * 1988-12-16 1990-06-12 Illinois Tool Works Inc. Driving tool with air-cooled bumper
US5062857A (en) * 1990-06-05 1991-11-05 Advanced Prosthestetics Development Corporation Myoelectrically controlled knee joint locking device
US5224413A (en) * 1992-07-13 1993-07-06 Mosier Industries, Inc. Impact dampening means for power cylinders
DE9216394U1 (en) * 1992-12-02 1993-02-11 Joh. Friedrich Behrens Ag, 2070 Ahrensburg, De
JPH07156078A (en) * 1993-12-03 1995-06-20 Kanematsu Nnk Corp Fastener striking tool
US5511759A (en) * 1994-05-26 1996-04-30 Steelcase, Inc. Hydraulic chair height adjustment mechanism
DE29508658U1 (en) * 1995-05-24 1995-07-27 Behrens Ag Friedrich Joh A fastener driving device
US5617925A (en) * 1995-06-05 1997-04-08 Sencorp Assembly for decelerating a driver in a tool
US5782461A (en) * 1996-12-19 1998-07-21 Lord Corporation Snubber using bulk loading
DE19800847A1 (en) * 1997-12-04 1999-06-17 Gerd Dr Ing Kellner Device for setting a fastening element into a placement base, and use of the device
DK1091975T3 (en) * 1998-07-01 2006-04-18 Debiopharm Sa New cyclosporine with improved activity profile
US6044709A (en) * 1998-10-29 2000-04-04 Venturedyne, Ltd. Vibrator
US20050107889A1 (en) 2003-11-18 2005-05-19 Stephane Bedard Instrumented prosthetic foot
US7815689B2 (en) 2003-11-18 2010-10-19 Victhom Human Bionics Inc. Instrumented prosthetic foot
US7637959B2 (en) * 2004-02-12 2009-12-29 össur hf Systems and methods for adjusting the angle of a prosthetic ankle based on a measured surface angle
EP1718252B1 (en) * 2004-02-12 2018-01-10 Össur hf System and method for motion-controlled foot unit
US7165305B2 (en) * 2004-04-02 2007-01-23 Black & Decker Inc. Activation arm assembly method
US7204403B2 (en) * 2004-04-02 2007-04-17 Black & Decker Inc. Activation arm configuration for a power tool
US8231039B2 (en) * 2004-04-02 2012-07-31 Black & Decker Inc. Structural backbone/motor mount for a power tool
US8123099B2 (en) * 2004-04-02 2012-02-28 Black & Decker Inc. Cam and clutch configuration for a power tool
US8302833B2 (en) 2004-04-02 2012-11-06 Black & Decker Inc. Power take off for cordless nailer
US7138595B2 (en) 2004-04-02 2006-11-21 Black & Decker Inc. Trigger configuration for a power tool
US7686199B2 (en) * 2004-04-02 2010-03-30 Black & Decker Inc. Lower bumper configuration for a power tool
US7331403B2 (en) * 2004-04-02 2008-02-19 Black & Decker Inc. Lock-out for activation arm mechanism in a power tool
US8011549B2 (en) * 2004-04-02 2011-09-06 Black & Decker Inc. Flywheel configuration for a power tool
US20050217416A1 (en) * 2004-04-02 2005-10-06 Alan Berry Overmolded article and method for forming same
WO2005097420A2 (en) * 2004-04-02 2005-10-20 Black & Decker Inc. Driver configuration for a power tool
US7726536B2 (en) 2004-04-02 2010-06-01 Black & Decker Inc. Upper bumper configuration for a power tool
US7322506B2 (en) * 2004-04-02 2008-01-29 Black & Decker Inc. Electric driving tool with driver propelled by flywheel inertia
US7503401B2 (en) * 2004-04-02 2009-03-17 Black & Decker Inc. Solenoid positioning methodology
US7975893B2 (en) * 2004-04-02 2011-07-12 Black & Decker Inc. Return cord assembly for a power tool
CA2592042C (en) * 2004-12-22 2014-12-16 Oessur Hf Systems and methods for processing limb motion
US7131563B2 (en) * 2005-01-28 2006-11-07 De Poan Pneumatic Corp. Nail driver bumper
SE528516C2 (en) 2005-04-19 2006-12-05 Lisa Gramnaes Combined active and passive leg prosthesis and a method for performing an operating cycle of such a system
US7556184B2 (en) * 2007-06-11 2009-07-07 Black & Decker Inc. Profile lifter for a nailer
AU2009232467B2 (en) * 2008-03-31 2014-11-20 Atlas Copco Airpower, Naamloze Venootschap Percussion tool
US7975777B2 (en) * 2008-12-19 2011-07-12 Robert Bosch Gmbh Cellular foam bumper for nailer
US9060884B2 (en) 2011-05-03 2015-06-23 Victhom Human Bionics Inc. Impedance simulating motion controller for orthotic and prosthetic applications
GB201308564D0 (en) * 2013-05-13 2013-06-19 Qinetiq Ltd Tool

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1285959B (en) * 1964-12-28 1968-12-19 Behrens Friedrich Joh Druckluftbetaetigtes tool for driving nails, staples od. Like.
DE1603733B2 (en) * 1967-07-12 1972-09-14 Control valve means for a fluid operated nagler
US3496840A (en) * 1968-01-29 1970-02-24 Fastener Corp Fastener driving apparatus
DE1908150B2 (en) * 1969-02-19 1975-07-31 Fa. Joh. Friedrich Behrens, 2070 Ahrensburg
DE6915710U (en) * 1969-04-19 1969-09-18 Reich Maschf Gmbh Karl nails for engraving apparatus or the like.
US3653299A (en) * 1970-05-11 1972-04-04 Signode Corp Pneumatic piston return system and valve assembly for impact tools
US3760695A (en) * 1972-03-01 1973-09-25 Senco Products Resilient piston stop construction
DE2339163C2 (en) * 1973-08-02 1975-01-30 Karl M. Reich, Maschinenfabrik Gmbh, 7440 Nuertingen
DE2510858C2 (en) * 1975-03-12 1987-01-08 Signode Corp., Glenview, Ill., Us
DE2529873C3 (en) * 1975-07-04 1978-06-15 Heinrich Buehnen Kg, 2800 Bremen
US4053093A (en) * 1975-11-28 1977-10-11 Thueringer Stephen E Air-actuated stapling gun improvement
JPS5854085Y2 (en) * 1977-11-14 1983-12-09
JPS5852065Y2 (en) * 1979-02-19 1983-11-28
JPS5623021U (en) * 1979-07-30 1981-03-02
US4320864A (en) * 1980-05-22 1982-03-23 Duo-Fast Corporation Muffler for fastener driving tool

Also Published As

Publication number Publication date
AT15777T (en) 1985-10-15
EP0054782A3 (en) 1983-07-20
CA1157201A (en) 1983-11-22
CA1157201A1 (en)
DE3047662C2 (en) 1985-02-21
JPH0211388B2 (en) 1990-03-14
EP0054782A2 (en) 1982-06-30
US4441644A (en) 1984-04-10
JPS57121484A (en) 1982-07-28
DE3047662A1 (en) 1982-07-22

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