EP0280195A3 - Percussion apparatus with tool holder - Google Patents

Percussion apparatus with tool holder Download PDF

Info

Publication number
EP0280195A3
EP0280195A3 EP88102374A EP88102374A EP0280195A3 EP 0280195 A3 EP0280195 A3 EP 0280195A3 EP 88102374 A EP88102374 A EP 88102374A EP 88102374 A EP88102374 A EP 88102374A EP 0280195 A3 EP0280195 A3 EP 0280195A3
Authority
EP
European Patent Office
Prior art keywords
holder
housing
chisel
end cap
tool holder
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.)
Ceased
Application number
EP88102374A
Other languages
German (de)
French (fr)
Other versions
EP0280195A2 (en
Inventor
Shigeru Miyagawa
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.)
Yamada Juki Co Ltd
Original Assignee
Yamada Juki Co Ltd
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 Yamada Juki Co Ltd filed Critical Yamada Juki Co Ltd
Publication of EP0280195A2 publication Critical patent/EP0280195A2/en
Publication of EP0280195A3 publication Critical patent/EP0280195A3/en
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/12—Means for driving the impulse member comprising a crank mechanism
    • B25D11/125—Means for driving the impulse member comprising a crank mechanism with a fluid cushion between the crank drive and the striking body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/24—Damping the reaction force

Abstract

A percussion apparatus comprises a vertically extending tubular housing (2), an end cap (28) removably mounted to the lower end of the housing, and a tool holder (34) extending through the end cap as elastically supported thereby and slidably movable axially of the housing. A chisel (18) extends through the holder and has a head located within the housing to be hit by a hammer rod (13) axially reciprocated in the housing. A tool holding device (37) is mounted on the holder outside the end cap for selecting a first condition in which the chisel is prevented from falling off the holder while being allowed to move axially within a limited range, and a second condition in which the chisel is allowed to be completely removed from the holder.
EP88102374A 1987-02-21 1988-02-18 Percussion apparatus with tool holder Ceased EP0280195A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP3839787 1987-02-21
JP38397/87 1987-02-21
JP62162036A JPH0763944B2 (en) 1987-02-21 1987-06-29 Breaker
JP162036/87 1987-06-29

Publications (2)

Publication Number Publication Date
EP0280195A2 EP0280195A2 (en) 1988-08-31
EP0280195A3 true EP0280195A3 (en) 1990-03-28

Family

ID=26377645

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88102374A Ceased EP0280195A3 (en) 1987-02-21 1988-02-18 Percussion apparatus with tool holder

Country Status (4)

Country Link
EP (1) EP0280195A3 (en)
JP (1) JPH0763944B2 (en)
KR (1) KR920001602B1 (en)
AU (1) AU598102B2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8916049U1 (en) * 1989-02-21 1993-03-04 Ecoair Drucklufttechnik Gmbh, 4690 Herne, De
US5363835A (en) * 1992-08-31 1994-11-15 Rocktec Limited Nose block assembly
JP4525904B2 (en) * 2004-06-08 2010-08-18 日立工機株式会社 Impact tool
JP4686372B2 (en) * 2006-02-01 2011-05-25 株式会社マキタ Impact type work tool
JP2013144346A (en) * 2012-01-16 2013-07-25 Hitachi Koki Co Ltd Hammer
JP2015175507A (en) 2014-03-18 2015-10-05 株式会社神戸製鋼所 Titanium weldment pipe and manufacturing method of titanium weldment pipe
US10814468B2 (en) 2017-10-20 2020-10-27 Milwaukee Electric Tool Corporation Percussion tool
CN214723936U (en) 2018-01-26 2021-11-16 米沃奇电动工具公司 Impact tool

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB399773A (en) * 1932-09-12 1933-10-12 Frank Hills Improvements in or relating to pneumatic hammers and similar percussive tools
CH211989A (en) * 1938-09-29 1940-10-31 Bosch Gmbh Robert Tool holder for impact devices.
US2298719A (en) * 1940-12-12 1942-10-13 Chicago Pneumatic Tool Co Implement retainer
US2432331A (en) * 1945-04-02 1947-12-09 Joy Mfg Co Working implement retainer
GB618546A (en) * 1946-10-04 1949-02-23 John Wilbur Tierney Improvements in or relating to fluid pressure operated engines, such as pneumatic picks or concrete breakers
FR1090212A (en) * 1953-11-04 1955-03-29 Kango Electric Hammers Ltd Mechanically controlled impact tool
US2823040A (en) * 1955-10-03 1958-02-11 Chicago Pneumatic Tool Co Tool retainer for pneumatic hammer
US3179185A (en) * 1962-06-14 1965-04-20 Chicago Pneumatic Tool Co Demolition tool with shock attenuating means
DE2243939A1 (en) * 1971-09-13 1973-03-22 Kango Electric Hammers Ltd IMPACT TOOL WITH A HOLDER THAT RECEIVES THE SHANK OF A TOOL INSERT
US4103747A (en) * 1977-01-14 1978-08-01 Finney James L Buffer spring for an impact tool
GB2032829A (en) * 1978-10-10 1980-05-14 Bosch Gmbh Robert Noise damped chisel hammer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2551125A1 (en) * 1975-11-14 1977-05-26 Bosch Gmbh Robert DEVICE FOR TORQUE TRANSMISSION
AU550165B2 (en) * 1982-03-01 1986-03-06 Allied Steel and Tractor Products Inc. Synchronous vibratory impact hammer

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB399773A (en) * 1932-09-12 1933-10-12 Frank Hills Improvements in or relating to pneumatic hammers and similar percussive tools
CH211989A (en) * 1938-09-29 1940-10-31 Bosch Gmbh Robert Tool holder for impact devices.
US2298719A (en) * 1940-12-12 1942-10-13 Chicago Pneumatic Tool Co Implement retainer
US2432331A (en) * 1945-04-02 1947-12-09 Joy Mfg Co Working implement retainer
GB618546A (en) * 1946-10-04 1949-02-23 John Wilbur Tierney Improvements in or relating to fluid pressure operated engines, such as pneumatic picks or concrete breakers
FR1090212A (en) * 1953-11-04 1955-03-29 Kango Electric Hammers Ltd Mechanically controlled impact tool
US2823040A (en) * 1955-10-03 1958-02-11 Chicago Pneumatic Tool Co Tool retainer for pneumatic hammer
US3179185A (en) * 1962-06-14 1965-04-20 Chicago Pneumatic Tool Co Demolition tool with shock attenuating means
DE2243939A1 (en) * 1971-09-13 1973-03-22 Kango Electric Hammers Ltd IMPACT TOOL WITH A HOLDER THAT RECEIVES THE SHANK OF A TOOL INSERT
US4103747A (en) * 1977-01-14 1978-08-01 Finney James L Buffer spring for an impact tool
GB2032829A (en) * 1978-10-10 1980-05-14 Bosch Gmbh Robert Noise damped chisel hammer

Also Published As

Publication number Publication date
AU598102B2 (en) 1990-06-14
JPS642878A (en) 1989-01-06
AU1192088A (en) 1988-08-25
EP0280195A2 (en) 1988-08-31
KR880009739A (en) 1988-10-04
JPH0763944B2 (en) 1995-07-12
KR920001602B1 (en) 1992-02-20

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