US3584776A - Pneumatically actuated stapling tool - Google Patents

Pneumatically actuated stapling tool Download PDF

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Publication number
US3584776A
US3584776A US862176A US3584776DA US3584776A US 3584776 A US3584776 A US 3584776A US 862176 A US862176 A US 862176A US 3584776D A US3584776D A US 3584776DA US 3584776 A US3584776 A US 3584776A
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US
United States
Prior art keywords
piston
magnet
cylinder
initial position
annular
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 - Lifetime
Application number
US862176A
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English (en)
Inventor
Adolf Bolte
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Individual
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Individual
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Filing date
Publication date
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Publication of US3584776A publication Critical patent/US3584776A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B25C1/047—Mechanical details

Definitions

  • Said piston consists of ferromagnetic material.
  • lt is known in the art to locate an annular permanent magnet in a case cover of a working cylinder in such a manner that the piston is drawn in its initial position towards the face of the magnet.
  • the piston abuts the magnet after every working stroke, so that the magnet is exposed to extensive mechanical strain and can, therefore, be easily damaged.
  • the adhesion power of the magnet becomes gradually less due to the constant beating it receives.
  • An important object of this invention is to provide a stapler of the type described with a magnet for holding the piston in its initial position such that any damage of the magnet is prevented.
  • a further object is to provide a stapling device which permits the use of commercial permanent magnets.
  • Another object of the invention is to provide a pneumatic portable stapling tool with a low overall height and relatively small weight of the device.
  • FIG. l is a fragmentary sectional view of the device embodying this invention with a piston in the starting initial position
  • FIG. 2 represents the device according to FIG. l with the piston at the end of its working stroke.
  • a stapling device constructed in accordance with the invention includes a permanent magnet which is mounted in the housing containing the cylinder in a manner such that it encloses part of the piston when in its initial position. Due to this arrangement the magnet is not struck or contacted by the piston and therefore is not exposed to any mechanical stress from the piston. Therefore the magnet is of practically unlimited durability and unaltered adhesion power.
  • the magnet has an annular shape and is lodged in an annular recess or slot of the cylinder housing.
  • the magnet may be made up of a plurality of parts or segments fitted together to form an open or closed ring.
  • several bar magnets can be arranged at the upper end of the cylinder such that the magnetic field surrounds the piston when in its initial position. For this reason it is possible to use commercial type permanent magnets, and this would lead to substantially lower manufacturing costs of said stapling tool.
  • the magnet enclosing the upper end of the cylinder is preferably held by the cylinder cover via an interposed steel collar. The overall height of the device is not increased when using such annular, segment or bar type magnets, and the wall thickness of the cylinder cover can be kept low.
  • the cylinder cover is appropriately equipped with internal studs to allow a channel to be formed between the steel collar, mounted on the upper end of the cylinder above the magnet, and the cylinder cover for admitting compressed air from a reservoir into th cylinder.
  • the pneumatically actuated stapling tool comprises a body or housing 1 made of light metal alloy in a manner well know, which body encloses a reservoir. 2 for compressed air connected to a compressed air supply line.
  • the front part 3 of the body l contains a tubular cylinder 4 in which a piston 5, made of steel or light metal alloy surrounded by a steel envelope, reciprocates.
  • the lower side of the piston 5 is secured to a driver or push rod 6 traveling in a drive track 8 mounted at the foot portion 7 of the device.
  • a staple is cut off during the working stroke of piston 5 from a magazine 9 in a known manner and driven into a workprece.
  • the compressed air reservoir 2 is connected to an air duct or channel 12 via a control valve 10 actuated by means of a trigger lever 11.
  • the air channel l2 runs above the upper end of the cylinder 4 between an annular plate or collar 13 and a cover 14 which closes said cylinder 4.
  • the annular collar 13 composed of ferromagnetic material such as steel, and a magnet element or an annular permanent magnet 16 in this instance, comprise magnet means.
  • the annular magnet 16 is placed in an annular recess or slot l5, below the collar 13 in the front part 3 of the body l.
  • the upper face of the magnet 16 forms a common radial plane with the upper end of cylinder 4.
  • the annular collar I3 is spaced by means of studs 17 to provide on the lower side of the cylinder cover 14 a communicating channel 18 connecting the air channel 12 to the cylinder 4.
  • the cylinder cover 14 is releasably connected by means of a pin 19 to the body 1 of the tool and hermetically sealed with respect thereto by means of a sealing ring 20.
  • the center por' tion of cylinder 4 encloses, in a known manner, an adjoining air chamber 21 which communicates with the lower portion of the cylinder via ports 22.
  • An exhaust channel 23 is arranged in the tool body l beneath the air reservoir 2.
  • a pneumatically actuated device for driving fasteners into a workpiece having a housing containing a cylinder, a piston reciprocable in said cylinder between an initial position and a driven position, means for admitting air under pressure to said cylinder at one surface of said piston for moving said piston in a driving stroke, means to admit compressed air at the opposite surface of said piston causing said piston to return to its initial position, and magnet means to hold said piston in said initial position; the improvement wherein said magnet means has at least one magnet element disposed in said housing adjacent one end of said cylinder and at the outside of said cylinder for retaining said piston in its initial position without said magnet element being struck by said piston.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Actuator (AREA)
US862176A 1968-10-04 1969-09-30 Pneumatically actuated stapling tool Expired - Lifetime US3584776A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681801162 DE1801162A1 (de) 1968-10-04 1968-10-04 Mit Druckluft betriebenes Schlaggeraet,insbesondere Heft- oder Nagelgeraet

Publications (1)

Publication Number Publication Date
US3584776A true US3584776A (en) 1971-06-15

Family

ID=5709625

Family Applications (1)

Application Number Title Priority Date Filing Date
US862176A Expired - Lifetime US3584776A (en) 1968-10-04 1969-09-30 Pneumatically actuated stapling tool

Country Status (3)

Country Link
US (1) US3584776A (enrdf_load_stackoverflow)
DE (1) DE1801162A1 (enrdf_load_stackoverflow)
GB (1) GB1225940A (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4415113A (en) * 1981-01-07 1983-11-15 International Business Machines Corporation Impact pinner apparatus
US20040020965A1 (en) * 2002-04-05 2004-02-05 Stanley Fastening Systems, L.P. Pneumatic tool with as-cast air signal passage
US20040108353A1 (en) * 2002-11-19 2004-06-10 Iwan Wolf Combustion-engined setting tool
US20070175942A1 (en) * 2003-04-04 2007-08-02 Stanley Fastening Systems, L.P. Pneumatic tool with as-cast air signal passage
US20080185904A1 (en) * 2005-03-07 2008-08-07 Carroll Bassett Handheld Pneumatic Tool For Breaking Up Rock
US20100028180A1 (en) * 2008-07-30 2010-02-04 Shimano Benelux B.V. Bicycle air pump
US20150053736A1 (en) * 2013-08-22 2015-02-26 Techtronic Power Tools Technology Limited Pneumatic fastener driver
WO2015024398A1 (en) * 2013-08-22 2015-02-26 Techtronic Power Tools Technology Limited Pneumatic fastener driver
US20150096776A1 (en) * 2013-10-09 2015-04-09 Black & Decker, Inc. Nailer Driver Blade Stop
US20150306751A1 (en) * 2012-12-13 2015-10-29 Hilti Aktiengesellschaft Fastening tool with magnetic piston holder
CN106393001A (zh) * 2016-11-07 2017-02-15 浙江三锋实业股份有限公司 一种电动气钉枪用压力控制结构
US10888981B2 (en) 2012-05-31 2021-01-12 Black & Decker Inc. Power tool having latched pusher assembly
US11229995B2 (en) 2012-05-31 2022-01-25 Black Decker Inc. Fastening tool nail stop

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2627846A (en) * 1948-05-24 1953-02-10 Cutler Hammer Inc Fluid pressure impact device
US2983922A (en) * 1959-04-27 1961-05-16 Senco Products Portable stapler with pneumatic drive and return
US3320860A (en) * 1964-12-28 1967-05-23 Joh Friedrich Behrens Maschine Staple driving apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2627846A (en) * 1948-05-24 1953-02-10 Cutler Hammer Inc Fluid pressure impact device
US2983922A (en) * 1959-04-27 1961-05-16 Senco Products Portable stapler with pneumatic drive and return
US3320860A (en) * 1964-12-28 1967-05-23 Joh Friedrich Behrens Maschine Staple driving apparatus

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4415113A (en) * 1981-01-07 1983-11-15 International Business Machines Corporation Impact pinner apparatus
EP0055812A3 (en) * 1981-01-07 1985-04-17 International Business Machines Corporation Impact pinner apparatus
US20040020965A1 (en) * 2002-04-05 2004-02-05 Stanley Fastening Systems, L.P. Pneumatic tool with as-cast air signal passage
US7204402B2 (en) 2002-04-05 2007-04-17 Stanley Fastening Systems, L.P. Pneumatic tool with as-cast air signal passage
US20040108353A1 (en) * 2002-11-19 2004-06-10 Iwan Wolf Combustion-engined setting tool
DE10253670B4 (de) * 2002-11-19 2021-05-06 Hilti Aktiengesellschaft Brennkraftbetriebenes Setzgerät
US20070175942A1 (en) * 2003-04-04 2007-08-02 Stanley Fastening Systems, L.P. Pneumatic tool with as-cast air signal passage
US20080185904A1 (en) * 2005-03-07 2008-08-07 Carroll Bassett Handheld Pneumatic Tool For Breaking Up Rock
US7708178B2 (en) * 2005-03-07 2010-05-04 Carroll Bassett Handheld pneumatic tool for breaking up rock
US9057364B2 (en) * 2008-07-30 2015-06-16 Shimano Benelux B.V. Bicycle air pump
US20100028180A1 (en) * 2008-07-30 2010-02-04 Shimano Benelux B.V. Bicycle air pump
US10888981B2 (en) 2012-05-31 2021-01-12 Black & Decker Inc. Power tool having latched pusher assembly
US12208497B2 (en) 2012-05-31 2025-01-28 Black & Decker Inc. Power tool having latched pusher assembly
US12151348B2 (en) 2012-05-31 2024-11-26 Black & Decker Inc. Power tool having latched pusher assembly
US11229995B2 (en) 2012-05-31 2022-01-25 Black Decker Inc. Fastening tool nail stop
US11179836B2 (en) 2012-05-31 2021-11-23 Black & Decker Inc. Power tool having latched pusher assembly
US9855645B2 (en) * 2012-12-13 2018-01-02 Hilti Aktiengesellschaft Fastening tool with magnetic piston holder
US20150306751A1 (en) * 2012-12-13 2015-10-29 Hilti Aktiengesellschaft Fastening tool with magnetic piston holder
EP3036069A4 (en) * 2013-08-22 2017-07-26 Techtronic Power Tools Technology Limited. Pneumatic fastener driver
WO2015024398A1 (en) * 2013-08-22 2015-02-26 Techtronic Power Tools Technology Limited Pneumatic fastener driver
US9662777B2 (en) * 2013-08-22 2017-05-30 Techtronic Power Tools Technology Limited Pneumatic fastener driver
CN105339137A (zh) * 2013-08-22 2016-02-17 创科电动工具科技有限公司 气动紧固件驱动器
US20150053736A1 (en) * 2013-08-22 2015-02-26 Techtronic Power Tools Technology Limited Pneumatic fastener driver
US10434634B2 (en) * 2013-10-09 2019-10-08 Black & Decker, Inc. Nailer driver blade stop
US20150096776A1 (en) * 2013-10-09 2015-04-09 Black & Decker, Inc. Nailer Driver Blade Stop
CN106393001A (zh) * 2016-11-07 2017-02-15 浙江三锋实业股份有限公司 一种电动气钉枪用压力控制结构

Also Published As

Publication number Publication date
DE1801162A1 (de) 1970-04-16
GB1225940A (enrdf_load_stackoverflow) 1971-03-24

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