FR2202758B3 - - Google Patents

Info

Publication number
FR2202758B3
FR2202758B3 FR7333464A FR7333464A FR2202758B3 FR 2202758 B3 FR2202758 B3 FR 2202758B3 FR 7333464 A FR7333464 A FR 7333464A FR 7333464 A FR7333464 A FR 7333464A FR 2202758 B3 FR2202758 B3 FR 2202758B3
Authority
FR
France
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
FR7333464A
Other languages
French (fr)
Other versions
FR2202758A1 (ja
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.)
Construction Technologies Inc
Original Assignee
Construction Technologies Inc
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 claimed from US00289787A external-priority patent/US3827507A/en
Priority claimed from US292161A external-priority patent/US3866690A/en
Application filed by Construction Technologies Inc filed Critical Construction Technologies Inc
Publication of FR2202758A1 publication Critical patent/FR2202758A1/fr
Application granted granted Critical
Publication of FR2202758B3 publication Critical patent/FR2202758B3/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/145—Control devices for the reciprocating piston for hydraulically actuated hammers having an accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/06—Means for driving the impulse member
    • B25D9/12—Means for driving the impulse member comprising a built-in liquid motor, i.e. the tool being driven by hydraulic pressure

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
FR7333464A 1972-09-18 1973-09-18 Expired FR2202758B3 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US00289787A US3827507A (en) 1972-09-18 1972-09-18 Hydraulically powered demolition device
US292161A US3866690A (en) 1972-09-25 1972-09-25 Hydraulically powered impact device

Publications (2)

Publication Number Publication Date
FR2202758A1 FR2202758A1 (ja) 1974-05-10
FR2202758B3 true FR2202758B3 (ja) 1976-08-20

Family

ID=26965843

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7333464A Expired FR2202758B3 (ja) 1972-09-18 1973-09-18

Country Status (4)

Country Link
JP (1) JPS574475B2 (ja)
DE (1) DE2346519A1 (ja)
FR (1) FR2202758B3 (ja)
GB (1) GB1382950A (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA756923B (en) * 1974-12-18 1977-04-27 Ingersoll Rand Co Hydraulic actuator
US4256187A (en) * 1978-11-30 1981-03-17 Hughes Tool Company Impact tool with hydraulic cocking mechanism
JPH0452302Y2 (ja) * 1985-04-11 1992-12-09
DE102004022623A1 (de) * 2004-05-07 2005-12-08 Robert Bosch Gmbh Handwerkzeugmaschine mit einem Schlagwerk
CN104790452B (zh) * 2015-03-31 2017-03-22 三一重机有限公司 一种应用于挖掘机的粒子冲击破碎系统及其破碎方法

Also Published As

Publication number Publication date
FR2202758A1 (ja) 1974-05-10
JPS574475B2 (ja) 1982-01-26
DE2346519A1 (de) 1974-04-11
GB1382950A (en) 1975-02-05
JPS4992802A (ja) 1974-09-04

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Legal Events

Date Code Title Description
ST Notification of lapse