GB1373848A - Hydraulic breaker operated by oil - Google Patents

Hydraulic breaker operated by oil

Info

Publication number
GB1373848A
GB1373848A GB1191172A GB1191172A GB1373848A GB 1373848 A GB1373848 A GB 1373848A GB 1191172 A GB1191172 A GB 1191172A GB 1191172 A GB1191172 A GB 1191172A GB 1373848 A GB1373848 A GB 1373848A
Authority
GB
United Kingdom
Prior art keywords
piston
hammer
valve member
oil
tool
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
GB1191172A
Other languages
English (en)
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.)
Kobelco Construction Machinery Co Ltd
Original Assignee
Yutani Heavy Industries 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
Priority claimed from JP1827671A external-priority patent/JPS5123922B1/ja
Priority claimed from JP6295571U external-priority patent/JPS516481Y2/ja
Priority claimed from JP6388371U external-priority patent/JPS516482Y2/ja
Priority claimed from JP7250371U external-priority patent/JPS4831691U/ja
Priority claimed from JP1971072504U external-priority patent/JPS5125521Y2/ja
Application filed by Yutani Heavy Industries Ltd filed Critical Yutani Heavy Industries Ltd
Publication of GB1373848A publication Critical patent/GB1373848A/en
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
    • B25D9/06—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)
GB1191172A 1971-03-27 1972-03-14 Hydraulic breaker operated by oil Expired GB1373848A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP1827671A JPS5123922B1 (de) 1971-03-27 1971-03-27
JP6295571U JPS516481Y2 (de) 1971-07-17 1971-07-17
JP6388371U JPS516482Y2 (de) 1971-07-19 1971-07-19
JP7250371U JPS4831691U (de) 1971-08-12 1971-08-12
JP1971072504U JPS5125521Y2 (de) 1971-08-12 1971-08-12

Publications (1)

Publication Number Publication Date
GB1373848A true GB1373848A (en) 1974-11-13

Family

ID=27520010

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1191172A Expired GB1373848A (en) 1971-03-27 1972-03-14 Hydraulic breaker operated by oil

Country Status (4)

Country Link
US (1) US3792738A (de)
DE (1) DE2214933C3 (de)
FR (1) FR2131667A5 (de)
GB (1) GB1373848A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2421461A (en) * 2004-12-23 2006-06-28 Black & Decker Inc A transmission housing for a power tool

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256187A (en) * 1978-11-30 1981-03-17 Hughes Tool Company Impact tool with hydraulic cocking mechanism
FI116125B (fi) * 2001-07-02 2005-09-30 Sandvik Tamrock Oy Iskulaite
KR101412092B1 (ko) * 2013-11-28 2014-07-02 주식회사 엔와이테크 저소음형 유압 타격 장치
CH711414A1 (de) * 2015-08-13 2017-02-15 Hatebur Umformmaschinen Ag Vorrichtung zur Erzeugung impulsdynamischer Prozesskräfte.
USD871461S1 (en) * 2017-06-16 2019-12-31 Il Jae Lee Hydraulic breaker

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2559478A (en) * 1948-11-22 1951-07-03 Stonefield Inc Hydraulic impact tool
US2661928A (en) * 1952-02-09 1953-12-08 Gulf Research Development Co Hammer drill
DE1070568B (de) * 1957-05-16 1959-12-10
US2917025A (en) * 1958-06-03 1959-12-15 Richard O Dulaney Pneumatic drill hammer
US3426856A (en) * 1967-06-09 1969-02-11 Hughes Tool Co Control valve for limiting hydraulic motor speedup

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2421461A (en) * 2004-12-23 2006-06-28 Black & Decker Inc A transmission housing for a power tool

Also Published As

Publication number Publication date
DE2214933A1 (de) 1972-10-12
DE2214933B2 (de) 1974-04-04
US3792738A (en) 1974-02-19
DE2214933C3 (de) 1975-01-02
FR2131667A5 (de) 1972-11-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee