FR2300931B1 - - Google Patents

Info

Publication number
FR2300931B1
FR2300931B1 FR7504608A FR7504608A FR2300931B1 FR 2300931 B1 FR2300931 B1 FR 2300931B1 FR 7504608 A FR7504608 A FR 7504608A FR 7504608 A FR7504608 A FR 7504608A FR 2300931 B1 FR2300931 B1 FR 2300931B1
Authority
FR
France
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
FR7504608A
Other languages
French (fr)
Other versions
FR2300931A1 (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.)
Creusot Loire SA
Original Assignee
Creusot Loire SA
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 Creusot Loire SA filed Critical Creusot Loire SA
Priority to FR7504608A priority Critical patent/FR2300931A1/en
Publication of FR2300931A1 publication Critical patent/FR2300931A1/en
Application granted granted Critical
Publication of FR2300931B1 publication Critical patent/FR2300931B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/24—Brasses; Bushes; Linings with different areas of the sliding surface consisting of different materials
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
    • F16C17/18—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with floating brasses or brushing, rotatable at a reduced speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2352/00—Apparatus for drilling
FR7504608A 1975-02-14 1975-02-14 Antiseizure plain bearings - particularly with double bearing surface in rotary drilling bits Granted FR2300931A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7504608A FR2300931A1 (en) 1975-02-14 1975-02-14 Antiseizure plain bearings - particularly with double bearing surface in rotary drilling bits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7504608A FR2300931A1 (en) 1975-02-14 1975-02-14 Antiseizure plain bearings - particularly with double bearing surface in rotary drilling bits

Publications (2)

Publication Number Publication Date
FR2300931A1 FR2300931A1 (en) 1976-09-10
FR2300931B1 true FR2300931B1 (en) 1978-06-23

Family

ID=9151225

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7504608A Granted FR2300931A1 (en) 1975-02-14 1975-02-14 Antiseizure plain bearings - particularly with double bearing surface in rotary drilling bits

Country Status (1)

Country Link
FR (1) FR2300931A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO762541L (en) * 1975-08-13 1977-02-15 Reed Tool Co
US4330158A (en) * 1980-10-09 1982-05-18 Dresser Industries, Inc. Rotary rock bit with improved thrust flange
US4486104A (en) * 1981-12-28 1984-12-04 Smith International, Inc. Composite bearing
US4499642A (en) * 1981-12-28 1985-02-19 Smith International, Inc. Composite bearing
FR2553169B1 (en) * 1983-10-05 1989-03-24 Chausson Usines Sa DEVICE FOR LUBRICATING A DIFFERENTIAL-TYPE GEAR MECHANISM AND THE LIKE
JP2532426B2 (en) * 1987-01-12 1996-09-11 松下電器産業株式会社 Solid lubrication bearing device
US6254275B1 (en) * 1995-12-19 2001-07-03 Smith International, Inc. Sealed bearing drill bit with dual-seal configuration and fluid-cleaning capability
US6033117A (en) * 1995-12-19 2000-03-07 Smith International, Inc. Sealed bearing drill bit with dual-seal configuration
US7992657B2 (en) 2006-08-18 2011-08-09 Atlas Copco Secoroc Llc Earth bit having a wear ring

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1498578A (en) * 1922-08-09 1924-06-24 Romano Vittorio Nicola Composite thrust bearing
US3235316A (en) * 1963-04-22 1966-02-15 Hughes Tool Co Journal bearing with alternating surface areas of wear resistant and antigalling materials
US3476446A (en) * 1967-06-08 1969-11-04 Smith International Rock bit and bearing
FR2052911B1 (en) * 1969-06-25 1973-04-06 Roulements Soc Nouvelle
US3678883A (en) * 1970-03-25 1972-07-25 Smith International Worn bearing indicator

Also Published As

Publication number Publication date
FR2300931A1 (en) 1976-09-10

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse