GB1294717A - Rotary percussion drill bits - Google Patents

Rotary percussion drill bits

Info

Publication number
GB1294717A
GB1294717A GB3926670A GB3926670A GB1294717A GB 1294717 A GB1294717 A GB 1294717A GB 3926670 A GB3926670 A GB 3926670A GB 3926670 A GB3926670 A GB 3926670A GB 1294717 A GB1294717 A GB 1294717A
Authority
GB
United Kingdom
Prior art keywords
drill bits
percussion drill
rotary percussion
rotary
aug
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
GB3926670A
Inventor
Robert George Knight
Edwin Alfred Grimes
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.)
Wickman Wimet Ltd
Original Assignee
Wickman Wimet 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 Wickman Wimet Ltd filed Critical Wickman Wimet Ltd
Priority to GB3926670A priority Critical patent/GB1294717A/en
Publication of GB1294717A publication Critical patent/GB1294717A/en
Expired 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
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56—Button-type inserts

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)

Abstract

1294717 Boring tools WICKMAN WIMET Ltd 11 Aug 1971 [14 Aug 1970] 39266/70 Heading B3C [Also in Divisions B4 and E1] An insert for a rotary-percussive bit comprises a cylindrical part 4 and frusto-conical parts 6, 7.
GB3926670A 1970-08-14 1970-08-14 Rotary percussion drill bits Expired GB1294717A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3926670A GB1294717A (en) 1970-08-14 1970-08-14 Rotary percussion drill bits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3926670A GB1294717A (en) 1970-08-14 1970-08-14 Rotary percussion drill bits

Publications (1)

Publication Number Publication Date
GB1294717A true GB1294717A (en) 1972-11-01

Family

ID=10408602

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3926670A Expired GB1294717A (en) 1970-08-14 1970-08-14 Rotary percussion drill bits

Country Status (1)

Country Link
GB (1) GB1294717A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2807353A1 (en) * 1977-03-03 1978-09-07 Sandvik Ab STONE DRILLING TIP
US4865392A (en) * 1985-07-18 1989-09-12 Gte Products Corporation Rotatable cutting bit
US4938538A (en) * 1983-03-23 1990-07-03 Santrade Limited Excavating tool cutting insert
US5161859A (en) * 1983-03-23 1992-11-10 Santrade Limited Excavating tool cutting insert
US6375272B1 (en) 2000-03-24 2002-04-23 Kennametal Inc. Rotatable cutting tool insert
USRE38151E1 (en) 1985-07-18 2003-06-24 Kennametal Inc. Rotatable cutting bit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2807353A1 (en) * 1977-03-03 1978-09-07 Sandvik Ab STONE DRILLING TIP
US4938538A (en) * 1983-03-23 1990-07-03 Santrade Limited Excavating tool cutting insert
US5161859A (en) * 1983-03-23 1992-11-10 Santrade Limited Excavating tool cutting insert
US4865392A (en) * 1985-07-18 1989-09-12 Gte Products Corporation Rotatable cutting bit
USRE38151E1 (en) 1985-07-18 2003-06-24 Kennametal Inc. Rotatable cutting bit
US6375272B1 (en) 2000-03-24 2002-04-23 Kennametal Inc. Rotatable cutting tool insert

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Legal Events

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