IT7823346V0 - Scalpello a rulli provvisto di numerosi rulli di taglio. - Google Patents

Scalpello a rulli provvisto di numerosi rulli di taglio.

Info

Publication number
IT7823346V0
IT7823346V0 IT7823346U IT2334678U IT7823346V0 IT 7823346 V0 IT7823346 V0 IT 7823346V0 IT 7823346 U IT7823346 U IT 7823346U IT 2334678 U IT2334678 U IT 2334678U IT 7823346 V0 IT7823346 V0 IT 7823346V0
Authority
IT
Italy
Prior art keywords
cutting rolls
roller chisel
numerous cutting
chisel equipped
numerous
Prior art date
Application number
IT7823346U
Other languages
English (en)
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 IT7823346V0 publication Critical patent/IT7823346V0/it

Links

Classifications

    • 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
    • E21B10/24—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details
    • 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
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/02—Sliding-contact bearings
    • F16C25/04—Sliding-contact bearings self-adjusting
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S384/00—Bearings
    • Y10S384/90—Cooling or heating
    • Y10S384/902—Porous member
IT7823346U 1977-12-21 1978-11-21 Scalpello a rulli provvisto di numerosi rulli di taglio. IT7823346V0 (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2756964A DE2756964C2 (de) 1977-12-21 1977-12-21 Rollenmeißel mit mehreren Schneidrollen

Publications (1)

Publication Number Publication Date
IT7823346V0 true IT7823346V0 (it) 1978-11-21

Family

ID=6026706

Family Applications (2)

Application Number Title Priority Date Filing Date
IT29975/78A IT1160251B (it) 1977-12-21 1978-11-21 Scalpello a rulli provvisto di numerosi rulli di taglio
IT7823346U IT7823346V0 (it) 1977-12-21 1978-11-21 Scalpello a rulli provvisto di numerosi rulli di taglio.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
IT29975/78A IT1160251B (it) 1977-12-21 1978-11-21 Scalpello a rulli provvisto di numerosi rulli di taglio

Country Status (7)

Country Link
US (1) US4206952A (it)
JP (1) JPS5492502A (it)
DE (1) DE2756964C2 (it)
FR (1) FR2412680A1 (it)
GB (1) GB2010941B (it)
IT (2) IT1160251B (it)
SE (1) SE429464B (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE429673B (sv) * 1979-03-19 1983-09-19 Sandvik Ab Lageranordning vid bergborrkronor
US4280571A (en) * 1980-01-24 1981-07-28 Dresser Industries, Inc. Rock bit
US4386663A (en) * 1981-02-25 1983-06-07 Hughes Tool Company Cooled journal bearing
US5678929A (en) * 1996-05-20 1997-10-21 Seagate Technology, Inc. Grooved hydrodynamic bearing arrangement including a porous lubricant reservoir
US10260560B2 (en) * 2013-12-04 2019-04-16 Us Synthetic Corporation Compact bearing assemblies including superhard bearing surfaces, bearing apparatuses, and methods of use

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1961819A (en) * 1932-12-15 1934-06-05 Costa John B De Renewable rotary bit
US2096252A (en) * 1934-02-19 1937-10-19 Gen Motors Corp Method of making a bearing material
US2104819A (en) * 1935-03-09 1938-01-11 Hughes Tool Co Roller boring drill
US2676790A (en) * 1948-11-10 1954-04-27 Turner Bits Inc Rock bit
US3047344A (en) * 1959-04-07 1962-07-31 Neyrpic Ets Drilling tools for turbine drills
DE1141962B (de) * 1961-09-28 1963-01-03 Karl Guenther Bechem Lager fuer Rollenbohrer
US3235316A (en) * 1963-04-22 1966-02-15 Hughes Tool Co Journal bearing with alternating surface areas of wear resistant and antigalling materials
US3746405A (en) * 1971-11-18 1973-07-17 Globe Oil Tools Co Well drilling bit lubrication and seal
US3984158A (en) * 1973-09-10 1976-10-05 Dresser Industries, Inc. Journal and pilot bearings with alternating surface areas of wear resistant and anti-galling materials
US3866987A (en) * 1974-01-14 1975-02-18 Smith International Drill bit with laminated friction bearing
US3890018A (en) * 1974-07-19 1975-06-17 Dresser Ind Rotary rock bit with wiper pad lubrication system
US3998500A (en) * 1975-08-28 1976-12-21 Smith International, Inc. Mountable cone sub assembly
US4102419A (en) * 1976-05-10 1978-07-25 Klima Frank J Rolling cutter drill bit with annular seal rings

Also Published As

Publication number Publication date
JPS5492502A (en) 1979-07-21
IT7829975A0 (it) 1978-11-21
DE2756964A1 (de) 1979-06-28
SE429464B (sv) 1983-09-05
IT1160251B (it) 1987-03-11
FR2412680B1 (it) 1984-02-17
FR2412680A1 (fr) 1979-07-20
GB2010941B (en) 1982-03-31
SE7812689L (sv) 1979-06-22
GB2010941A (en) 1979-07-04
DE2756964C2 (de) 1986-01-30
US4206952A (en) 1980-06-10

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