IT1160045B - Scalpello a rulli con rulli di taglio di forma conica - Google Patents

Scalpello a rulli con rulli di taglio di forma conica

Info

Publication number
IT1160045B
IT1160045B IT2946478A IT2946478A IT1160045B IT 1160045 B IT1160045 B IT 1160045B IT 2946478 A IT2946478 A IT 2946478A IT 2946478 A IT2946478 A IT 2946478A IT 1160045 B IT1160045 B IT 1160045B
Authority
IT
Italy
Prior art keywords
conical shape
cutting rolls
roller chisel
chisel
roller
Prior art date
Application number
IT2946478A
Other languages
English (en)
Other versions
IT7829464A0 (it
Original Assignee
Skf Kugellagerfabriken Gmbh
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 Skf Kugellagerfabriken Gmbh filed Critical Skf Kugellagerfabriken Gmbh
Publication of IT7829464A0 publication Critical patent/IT7829464A0/it
Application granted granted Critical
Publication of IT1160045B publication Critical patent/IT1160045B/it

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
    • E21B10/25—Roller bits characterised by bearing, lubrication or sealing details characterised by sealing details
    • 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
    • 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
    • F16C21/00—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Rolling Contact Bearings (AREA)
IT2946478A 1977-12-14 1978-11-06 Scalpello a rulli con rulli di taglio di forma conica IT1160045B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2755591A DE2755591C2 (de) 1977-12-14 1977-12-14 Rollenmeißel mit kegelig ausgebildeten Schneidrollen

Publications (2)

Publication Number Publication Date
IT7829464A0 IT7829464A0 (it) 1978-11-06
IT1160045B true IT1160045B (it) 1987-03-04

Family

ID=6026050

Family Applications (2)

Application Number Title Priority Date Filing Date
IT2946478A IT1160045B (it) 1977-12-14 1978-11-06 Scalpello a rulli con rulli di taglio di forma conica
IT2321678U IT7823216V0 (it) 1977-12-14 1978-11-06 Scalpello a rulli con rulli di taglio di forma conica.

Family Applications After (1)

Application Number Title Priority Date Filing Date
IT2321678U IT7823216V0 (it) 1977-12-14 1978-11-06 Scalpello a rulli con rulli di taglio di forma conica.

Country Status (7)

Country Link
US (1) US4249781A (it)
JP (1) JPS5492503A (it)
DE (1) DE2755591C2 (it)
FR (1) FR2411957A1 (it)
GB (1) GB2010358B (it)
IT (2) IT1160045B (it)
SE (1) SE438706B (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3207237C2 (de) * 1982-02-25 1984-06-07 Mannesmann AG, 4000 Düsseldorf Gewindeverbindung für Ölfeldrohre
US4793719A (en) * 1987-11-18 1988-12-27 Smith International, Inc. Precision roller bearing rock bits
JPH01267921A (ja) * 1988-04-19 1989-10-25 Omron Tateisi Electron Co 密封型継電器
US4955440A (en) * 1989-07-19 1990-09-11 Intevep, S.A. Rotary drill bits with plural sealing systems
US5586611A (en) * 1995-10-13 1996-12-24 Cypress Services, Inc. Drill bit having dual split bushings for cutter support and retention
DE10112293C1 (de) * 2001-03-08 2002-07-25 Demag Mobile Cranes Gmbh & Co Großdrehlagerung
US7927019B2 (en) * 2005-05-31 2011-04-19 Mitsubishi Heavy Industries Ltd. Slewing bearing structure
US7708090B2 (en) * 2006-07-12 2010-05-04 Baker Hughes Incorporated Excluder ring for earth-boring bit
US10119335B2 (en) 2016-02-18 2018-11-06 Baker Hughes Incorporated Bearings for downhole tools, downhole tools incorporating such bearings, and related methods
US10519720B2 (en) 2016-02-18 2019-12-31 Baker Hughes, A Ge Company, Llc Bearings for downhole tools, downhole tools incorporating such bearings, and related methods

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1053319A (fr) * 1952-04-02 1954-02-02 Materiel De Forage Soc De Fab Dispositif de montage pour outils à molettes
US2759777A (en) * 1954-08-31 1956-08-21 Norma Hoffman Bearings Corp Sealed bearing structure
US3127942A (en) * 1962-01-02 1964-04-07 Smith Ind International Inc Bearing closure for rotary rock bit
DE1294113B (de) * 1964-01-11 1969-04-30 Wetzel Roland Kugeldrehverbindung
US3307645A (en) * 1964-10-20 1967-03-07 Exxon Production Research Co Reverse bearing bit
US3620580A (en) * 1970-08-03 1971-11-16 Hughes Tool Co Rock drill with increased bearing life
US3746405A (en) * 1971-11-18 1973-07-17 Globe Oil Tools Co Well drilling bit lubrication and seal
JPS5415842B2 (it) * 1972-11-29 1979-06-18
CA1031766A (en) * 1973-09-12 1978-05-23 Dresser Industries Rock bit bearing system for carrying out thrust
NL175660C (nl) * 1973-12-10 1984-12-03 Skf Ind Trading & Dev Lagereenheid.
US3923108A (en) * 1975-01-17 1975-12-02 Jr Edward B Williams Drill tool
NL179409C (nl) * 1976-04-12 1986-09-01 Skf Ind Trading & Dev Boorbeitel voor gesteente.

Also Published As

Publication number Publication date
IT7823216V0 (it) 1978-11-06
JPS5492503A (en) 1979-07-21
JPS6135353B2 (it) 1986-08-12
FR2411957B1 (it) 1983-08-05
SE7812690L (sv) 1979-06-15
FR2411957A1 (fr) 1979-07-13
GB2010358B (en) 1982-03-24
GB2010358A (en) 1979-06-27
DE2755591C2 (de) 1985-11-07
DE2755591A1 (de) 1979-06-21
US4249781A (en) 1981-02-10
IT7829464A0 (it) 1978-11-06
SE438706B (sv) 1985-04-29

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