GB1434197A - Rotary percussion drill bits - Google Patents

Rotary percussion drill bits

Info

Publication number
GB1434197A
GB1434197A GB3667972A GB3667972A GB1434197A GB 1434197 A GB1434197 A GB 1434197A GB 3667972 A GB3667972 A GB 3667972A GB 3667972 A GB3667972 A GB 3667972A GB 1434197 A GB1434197 A GB 1434197A
Authority
GB
United Kingdom
Prior art keywords
flats
aug
drill bits
percussion drill
rotary percussion
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
GB3667972A
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 GB3667972A priority Critical patent/GB1434197A/en
Publication of GB1434197A publication Critical patent/GB1434197A/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
    • E21B10/58—Chisel-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)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

1434197 Cutter inserts WICKMAN WIMET Ltd 3 Aug 1973 [5 Aug 1972] 36679/72 Heading B3C [Also in Divisions E1 and B4] An insert for a rotary-percussive drill bit comprises a body of circular cross-section having a pair of complementary inclined flats 3 forming a chisel edge 4 inclined to the longitudinal axis of the body and of a length less than the diameter of the body. As shown, the two flats 3 are joined by a segmental surface 5 of a cone. The segmental surface 5 may be replaced with a flat to give two extra chisel edges formed by the junction with the flats 3. Such inserts may be inserted into a truncated conical surface of the bit so as to be inclined to the axis of rotation.
GB3667972A 1972-08-05 1972-08-05 Rotary percussion drill bits Expired GB1434197A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3667972A GB1434197A (en) 1972-08-05 1972-08-05 Rotary percussion drill bits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3667972A GB1434197A (en) 1972-08-05 1972-08-05 Rotary percussion drill bits

Publications (1)

Publication Number Publication Date
GB1434197A true GB1434197A (en) 1976-05-05

Family

ID=10390297

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3667972A Expired GB1434197A (en) 1972-08-05 1972-08-05 Rotary percussion drill bits

Country Status (1)

Country Link
GB (1) GB1434197A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3446004A1 (en) * 1983-12-19 1985-07-04 Santrade Ltd., Luzern STONE DRILL TIP
DE10133948A1 (en) * 2001-07-17 2003-02-06 Hawera Probst Gmbh Point chisel for drilling and hammering has pyramid-shaped chisel head with odd number of surfaces and cutting edges

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3446004A1 (en) * 1983-12-19 1985-07-04 Santrade Ltd., Luzern STONE DRILL TIP
US4607712A (en) * 1983-12-19 1986-08-26 Santrade Limited Rock drill bit
DE10133948A1 (en) * 2001-07-17 2003-02-06 Hawera Probst Gmbh Point chisel for drilling and hammering has pyramid-shaped chisel head with odd number of surfaces and cutting edges

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Legal Events

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