BE780614A - IMPROVEMENTS IN DRILLS - Google Patents

IMPROVEMENTS IN DRILLS

Info

Publication number
BE780614A
BE780614A BE780614A BE780614A BE780614A BE 780614 A BE780614 A BE 780614A BE 780614 A BE780614 A BE 780614A BE 780614 A BE780614 A BE 780614A BE 780614 A BE780614 A BE 780614A
Authority
BE
Belgium
Prior art keywords
drills
Prior art date
Application number
BE780614A
Other languages
French (fr)
Inventor
Etem Ets De Technique Modernes
Original Assignee
Olin Authier S A
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 Olin Authier S A filed Critical Olin Authier S A
Publication of BE780614A publication Critical patent/BE780614A/en

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
    • B25D9/16—Valve arrangements therefor
    • B25D9/22—Valve arrangements therefor involving a rotary-type slide valve
    • 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B6/00—Drives for drilling with combined rotary and percussive action
BE780614A 1971-03-16 1972-03-13 IMPROVEMENTS IN DRILLS BE780614A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH380771A CH532454A (en) 1971-03-16 1971-03-16 Pneumatic percussion and rotation tool

Publications (1)

Publication Number Publication Date
BE780614A true BE780614A (en) 1972-07-03

Family

ID=4263871

Family Applications (1)

Application Number Title Priority Date Filing Date
BE780614A BE780614A (en) 1971-03-16 1972-03-13 IMPROVEMENTS IN DRILLS

Country Status (13)

Country Link
US (1) US3791461A (en)
JP (1) JPS5441155B1 (en)
AR (1) AR197955A1 (en)
BE (1) BE780614A (en)
BR (1) BR7201439D0 (en)
CA (1) CA951603A (en)
CH (1) CH532454A (en)
DE (1) DE2212217A1 (en)
ES (1) ES400768A1 (en)
FR (1) FR2129498A5 (en)
GB (1) GB1381545A (en)
IT (1) IT950031B (en)
ZA (1) ZA721308B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA803409B (en) * 1979-06-18 1981-05-27 Kango Electric Hammers Ltd Hammer drill
US4336847A (en) * 1980-06-27 1982-06-29 Hitachi Koki Company, Limited Percussion drill
EP0052507B1 (en) * 1980-11-18 1985-02-13 Black & Decker Inc. Percussive drills
JPH01274908A (en) * 1988-04-25 1989-11-02 Matsushita Electric Works Ltd Hammer drill
IL105743A0 (en) * 1992-06-11 1993-09-22 Dov Shilkrut Penetrating tool system
DE19545260A1 (en) * 1995-11-24 1997-05-28 Black & Decker Inc Hammer drill
GB2435442A (en) * 2006-02-24 2007-08-29 Black & Decker Inc Powered hammer with helically shaped vent channel
EP3670095A1 (en) * 2018-12-20 2020-06-24 Hilti Aktiengesellschaft Handheld machine tool
US11185969B2 (en) * 2019-10-08 2021-11-30 Chih-Kuan Hsieh Pneumatic tool having movable air tube

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1703841A (en) * 1920-01-09 1929-02-26 Sullivan Machinery Co Percussive tool
US1663403A (en) * 1920-02-24 1928-03-20 George H Gilman Drilling machine
US3074381A (en) * 1961-07-12 1963-01-22 Joy Mfg Co Rock drill rotation mechanism
US3403738A (en) * 1966-11-01 1968-10-01 Aro Corp Drill/scredriver with impact mechanism

Also Published As

Publication number Publication date
AR197955A1 (en) 1974-05-24
ES400768A1 (en) 1975-01-16
JPS5441155B1 (en) 1979-12-06
CH532454A (en) 1973-01-15
IT950031B (en) 1973-06-20
FR2129498A5 (en) 1972-10-27
DE2212217A1 (en) 1972-09-28
BR7201439D0 (en) 1973-08-09
CA951603A (en) 1974-07-23
ZA721308B (en) 1972-11-29
US3791461A (en) 1974-02-12
GB1381545A (en) 1975-01-22

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