CA2236356A1 - Pneumatic tool with a reverse valve having an overdrive - Google Patents

Pneumatic tool with a reverse valve having an overdrive

Info

Publication number
CA2236356A1
CA2236356A1 CA002236356A CA2236356A CA2236356A1 CA 2236356 A1 CA2236356 A1 CA 2236356A1 CA 002236356 A CA002236356 A CA 002236356A CA 2236356 A CA2236356 A CA 2236356A CA 2236356 A1 CA2236356 A1 CA 2236356A1
Authority
CA
Canada
Prior art keywords
overdrive
reverse valve
rotor
pneumatic tool
housing
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.)
Granted
Application number
CA002236356A
Other languages
French (fr)
Other versions
CA2236356C (en
Inventor
David A. Giardino
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.)
Chicago Pneumatic Tool Co LLC
Original Assignee
Chicago Pneumatic Tool Company
David A. Giardino
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
Application filed by Chicago Pneumatic Tool Company, David A. Giardino filed Critical Chicago Pneumatic Tool Company
Publication of CA2236356A1 publication Critical patent/CA2236356A1/en
Application granted granted Critical
Publication of CA2236356C publication Critical patent/CA2236356C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C20/00—Control of, monitoring of, or safety arrangements for, machines or engines
    • F01C20/10—Control of, monitoring of, or safety arrangements for, machines or engines characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
    • F01C20/14—Control of, monitoring of, or safety arrangements for, machines or engines characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using rotating valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/145—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers
    • B25B23/1453—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers for impact wrenches or screwdrivers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C20/00—Control of, monitoring of, or safety arrangements for, machines or engines
    • F01C20/04—Control of, monitoring of, or safety arrangements for, machines or engines specially adapted for reversible machines or engines

Abstract

The invention is a pneumatic tool with a reverse valve having an overdrive. In particular, the pneumatic tool includes a housing, a rotor, rotatably mounted within the housing, an output shaft operatively coupled to the rotor, and pressure chambers defined between the housing and the rotor. A pneumatic reverse valve having an overdrive is operatively coupled to the rotor. The overdrive provides increased torque and increased speed to the output shaft. The reverse valve controls flow of pressurized air to a multi-chambered motor of the tool such that the direction of the motor can be reversed and the number of pressure chambers receiving pressurized air can be selected regardless of direction.
CA002236356A 1997-05-07 1998-04-29 Pneumatic tool with a reverse valve having an overdrive Expired - Fee Related CA2236356C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US85278597A 1997-05-07 1997-05-07
US08/852,785 1997-05-07

Publications (2)

Publication Number Publication Date
CA2236356A1 true CA2236356A1 (en) 1998-11-07
CA2236356C CA2236356C (en) 2005-11-29

Family

ID=25314214

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002236356A Expired - Fee Related CA2236356C (en) 1997-05-07 1998-04-29 Pneumatic tool with a reverse valve having an overdrive

Country Status (9)

Country Link
EP (1) EP0876883B1 (en)
JP (1) JPH10329050A (en)
KR (1) KR100553582B1 (en)
CN (1) CN1071173C (en)
BR (1) BR9801583A (en)
CA (1) CA2236356C (en)
DE (1) DE69834597T2 (en)
TW (1) TW401332B (en)
ZA (1) ZA983897B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK1250217T3 (en) 2000-01-27 2006-10-23 S P Air Kk Pneumatic rotary tool
US6158528A (en) * 2000-01-27 2000-12-12 S.P. Air Kabusiki Kaisha Hand-held pneumatic rotary drive device
JP3746482B2 (en) 2000-09-08 2006-02-15 エス・ピー・エアー株式会社 Pneumatic rotary tool
AU2002226192B2 (en) * 2001-01-24 2006-07-20 Demain Technology Pty Ltd Power tool
AUPR272101A0 (en) * 2001-01-24 2001-02-22 Bayly Design Associates Pty Ltd Power tool
US6880645B2 (en) 2002-06-14 2005-04-19 S.P. Air Kabusiki Kaisha Pneumatic rotary tool
JP3996475B2 (en) * 2002-09-13 2007-10-24 株式会社信濃製作所 Air impact wrench
JP4396214B2 (en) * 2003-10-14 2010-01-13 日立工機株式会社 Compressed air screwing machine
EP1738876A1 (en) * 2005-06-30 2007-01-03 Mighty Seven International Co., Ltd. Pneumatic tool
DE102007030644A1 (en) * 2007-07-02 2009-01-08 Gustav Klauke Gmbh Hydraulically operated hand tool
TWI477367B (en) * 2014-03-06 2015-03-21 Chang Wei Ting Pneumatic tool commutation control structure
CN105983948A (en) * 2015-02-13 2016-10-05 张玮庭 Reversing control structure of pneumatic tool

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3472323A (en) * 1967-10-24 1969-10-14 Robert M Hall Pneumatically driven surgical instrument
US3618633A (en) * 1970-01-12 1971-11-09 Ingersoll Rand Co Reverse valve for pneumatic tool
US3833068A (en) * 1973-07-26 1974-09-03 Automotive Ind Marketing Corp Controlled power pneumatic impact wrench
US3989113A (en) * 1975-08-25 1976-11-02 Chicago Pneumatic Tool Company Pneumatic tool having a reverse air control valve with an integral regulator
SE423500B (en) * 1980-09-19 1982-05-10 Atlas Copco Ab REVERSIBLE PRESSURE FLUID TOOL
US4962787A (en) * 1989-03-17 1990-10-16 Ingersoll-Rand Company Fluid flow reversing and regulating ring
US5293747A (en) * 1992-07-27 1994-03-15 Ingersoll-Rand Company Power regulator for a pressure fluid motor
JP2537968Y2 (en) * 1992-12-10 1997-06-04 株式会社空研 Regulator structure in impact wrench
SE503847C2 (en) * 1994-10-10 1996-09-16 Atlas Copco Tools Ab Handle for a pneumatic power tool

Also Published As

Publication number Publication date
KR100553582B1 (en) 2006-05-23
JPH10329050A (en) 1998-12-15
CN1205931A (en) 1999-01-27
DE69834597D1 (en) 2006-06-29
KR19980086813A (en) 1998-12-05
CA2236356C (en) 2005-11-29
ZA983897B (en) 2000-01-13
DE69834597T2 (en) 2007-04-26
CN1071173C (en) 2001-09-19
EP0876883A2 (en) 1998-11-11
EP0876883B1 (en) 2006-05-24
BR9801583A (en) 1999-06-29
TW401332B (en) 2000-08-11
EP0876883A3 (en) 2003-04-02

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed