GB1473938A - Earth boring bits - Google Patents

Earth boring bits

Info

Publication number
GB1473938A
GB1473938A GB3756974A GB3756974A GB1473938A GB 1473938 A GB1473938 A GB 1473938A GB 3756974 A GB3756974 A GB 3756974A GB 3756974 A GB3756974 A GB 3756974A GB 1473938 A GB1473938 A GB 1473938A
Authority
GB
United Kingdom
Prior art keywords
cutter
bearing pin
bearing
ball bearings
raceways
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
GB3756974A
Other languages
English (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.)
Dresser Industries Inc
Original Assignee
Dresser Industries Inc
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 Dresser Industries Inc filed Critical Dresser Industries Inc
Publication of GB1473938A publication Critical patent/GB1473938A/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
    • E21B10/08—Roller bits
    • E21B10/22—Roller bits characterised by bearing, lubrication or sealing details

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)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Earth Drilling (AREA)
GB3756974A 1973-09-12 1974-08-28 Earth boring bits Expired GB1473938A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US39662273A 1973-09-12 1973-09-12

Publications (1)

Publication Number Publication Date
GB1473938A true GB1473938A (en) 1977-05-18

Family

ID=23567984

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3756974A Expired GB1473938A (en) 1973-09-12 1974-08-28 Earth boring bits

Country Status (7)

Country Link
CA (1) CA1031766A (enrdf_load_stackoverflow)
FI (1) FI260474A7 (enrdf_load_stackoverflow)
FR (1) FR2243323B1 (enrdf_load_stackoverflow)
GB (1) GB1473938A (enrdf_load_stackoverflow)
NO (1) NO743269L (enrdf_load_stackoverflow)
SE (1) SE7411469L (enrdf_load_stackoverflow)
ZA (1) ZA745188B (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2755591C2 (de) * 1977-12-14 1985-11-07 SKF GmbH, 8720 Schweinfurt Rollenmeißel mit kegelig ausgebildeten Schneidrollen
CA2009987A1 (en) * 1990-02-14 1991-08-14 Kenneth M. White Journal bearing type rock bit

Also Published As

Publication number Publication date
FR2243323B1 (enrdf_load_stackoverflow) 1982-11-05
FI260474A7 (enrdf_load_stackoverflow) 1975-03-13
FR2243323A1 (enrdf_load_stackoverflow) 1975-04-04
CA1031766A (en) 1978-05-23
ZA745188B (en) 1975-08-27
NO743269L (enrdf_load_stackoverflow) 1975-04-07
AU7247874A (en) 1976-02-19
SE7411469L (enrdf_load_stackoverflow) 1975-03-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee