GB1552975A - Drills - Google Patents

Drills

Info

Publication number
GB1552975A
GB1552975A GB5072476A GB5072476A GB1552975A GB 1552975 A GB1552975 A GB 1552975A GB 5072476 A GB5072476 A GB 5072476A GB 5072476 A GB5072476 A GB 5072476A GB 1552975 A GB1552975 A GB 1552975A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
drills
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
GB5072476A
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.)
Atlas Copco AB
Original Assignee
Atlas Copco AB
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

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00Drives used in the borehole
    • E21B4/06Down-hole impacting means, e.g. hammers
    • E21B4/14Fluid operated hammers
GB5072476A 1976-12-07 1976-12-07 Drills Expired GB1552975A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5072476A GB1552975A (en) 1976-12-07 1976-12-07 Drills

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5072476A GB1552975A (en) 1976-12-07 1976-12-07 Drills

Publications (1)

Publication Number Publication Date
GB1552975A true true GB1552975A (en) 1979-09-19

Family

ID=10457090

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5072476A Expired GB1552975A (en) 1976-12-07 1976-12-07 Drills

Country Status (1)

Country Link
GB (1) GB1552975A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2458668A1 (en) * 1979-06-11 1981-01-02 Dresser Ind rock hammer drill has fluid control
EP0043291A1 (en) * 1980-07-01 1982-01-06 Greame Rear Ian Improved fluid operated hammer
EP0048142A1 (en) * 1980-09-11 1982-03-24 Ian Graeme Rear Fluid operated hammer
EP0083507A2 (en) * 1982-01-04 1983-07-13 Ian Graeme Rear Fluid operated hammer having drill bit clearance means
US4530407A (en) * 1981-09-17 1985-07-23 Rear Ian G Fluid operated hammer
US4530408A (en) * 1983-03-28 1985-07-23 Toutant Roland J Porting system for pneumatic impact hammer
US4653593A (en) * 1984-07-12 1987-03-31 Atlas Copco Aktiebolag Control method and control device for a down-the-hole rock drill

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2458668A1 (en) * 1979-06-11 1981-01-02 Dresser Ind rock hammer drill has fluid control
US4446929A (en) * 1979-06-11 1984-05-08 Dresser Industries, Inc. Fluid operated rock drill hammer
EP0043291A1 (en) * 1980-07-01 1982-01-06 Greame Rear Ian Improved fluid operated hammer
US4534422A (en) * 1980-07-01 1985-08-13 Rear Ian G Fluid operated hammer
EP0048142A1 (en) * 1980-09-11 1982-03-24 Ian Graeme Rear Fluid operated hammer
US4530407A (en) * 1981-09-17 1985-07-23 Rear Ian G Fluid operated hammer
EP0083507A2 (en) * 1982-01-04 1983-07-13 Ian Graeme Rear Fluid operated hammer having drill bit clearance means
EP0083507A3 (en) * 1982-01-04 1983-09-07 Ian Graeme Rear Fluid operated hammer having drill bit clearance means
US4530408A (en) * 1983-03-28 1985-07-23 Toutant Roland J Porting system for pneumatic impact hammer
US4653593A (en) * 1984-07-12 1987-03-31 Atlas Copco Aktiebolag Control method and control device for a down-the-hole rock drill

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee