GB8612767D0 - Rock drills - Google Patents

Rock drills

Info

Publication number
GB8612767D0
GB8612767D0 GB868612767A GB8612767A GB8612767D0 GB 8612767 D0 GB8612767 D0 GB 8612767D0 GB 868612767 A GB868612767 A GB 868612767A GB 8612767 A GB8612767 A GB 8612767A GB 8612767 D0 GB8612767 D0 GB 8612767D0
Authority
GB
United Kingdom
Prior art keywords
rock drills
drills
rock
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.)
Withdrawn
Application number
GB868612767A
Other versions
GB2175941A (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.)
WEAVER AND HURT Ltd
Original Assignee
WEAVER AND HURT 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 WEAVER AND HURT Ltd filed Critical WEAVER AND HURT Ltd
Publication of GB8612767D0 publication Critical patent/GB8612767D0/en
Publication of GB2175941A publication Critical patent/GB2175941A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/12—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using drilling pipes with plural fluid passages, e.g. closed circulation systems
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
GB08612767A 1985-06-07 1986-05-27 Rock drills Withdrawn GB2175941A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB858514505A GB8514505D0 (en) 1985-06-07 1985-06-07 Rock drills

Publications (2)

Publication Number Publication Date
GB8612767D0 true GB8612767D0 (en) 1986-07-02
GB2175941A GB2175941A (en) 1986-12-10

Family

ID=10580386

Family Applications (2)

Application Number Title Priority Date Filing Date
GB858514505A Pending GB8514505D0 (en) 1985-06-07 1985-06-07 Rock drills
GB08612767A Withdrawn GB2175941A (en) 1985-06-07 1986-05-27 Rock drills

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB858514505A Pending GB8514505D0 (en) 1985-06-07 1985-06-07 Rock drills

Country Status (3)

Country Link
EP (1) EP0204243A3 (en)
AU (1) AU5805286A (en)
GB (2) GB8514505D0 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215757B (en) * 1986-10-24 1990-05-30 William Lister A pneumatic percussion hammer
US4921056A (en) * 1987-04-23 1990-05-01 Ennis Melvyn S J Hammer drills for making boreholes
WO1990003488A1 (en) * 1988-09-22 1990-04-05 William Lister Improvements in pneumatic percussion hammers
AU623434B2 (en) * 1988-09-22 1992-05-14 William Lister Improvements in pneumatic percussion hammers
AU631220B2 (en) * 1989-06-19 1992-11-19 John Kitching Reverse circulation drilling apparatus
WO1991016521A1 (en) * 1990-04-19 1991-10-31 Werner Giehl Percussive drilling arrangement
IE80718B1 (en) * 1995-01-06 1998-12-30 Minroc Techn Promotions Ltd A reverse circulation down-the-hole drill
US5685380A (en) * 1995-01-06 1997-11-11 Minroc Technical Promotions Limited Reverse circulation down-the-hole drill
WO2023198568A1 (en) * 2022-04-13 2023-10-19 Sandvik Mining And Construction Oy Protective sleeve for percussive drilling assembly

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1558974A1 (en) * 1967-09-26 1970-04-02 Grossbohrloch Und Spreng Unter Ring downhole hammer
US3871486A (en) * 1973-08-29 1975-03-18 Bakerdrill Inc Continuous coring system and apparatus
US3991834A (en) * 1975-07-07 1976-11-16 Curington Alfred R Sampling airhammer apparatus
DE2854461C2 (en) * 1978-12-16 1983-03-10 Wirth Maschinen- und Bohrgeräte-Fabrik GmbH, 5140 Erkelenz Countersink hammer
US4509606A (en) * 1980-10-29 1985-04-09 Walker-Neer Manufacturing Co., Inc. Axial return hammer

Also Published As

Publication number Publication date
EP0204243A2 (en) 1986-12-10
EP0204243A3 (en) 1988-07-27
GB8514505D0 (en) 1985-07-10
AU5805286A (en) 1986-12-11
GB2175941A (en) 1986-12-10

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)