IT7823216V0 - 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
- IT7823216V0 IT7823216V0 IT2321678U IT2321678U IT7823216V0 IT 7823216 V0 IT7823216 V0 IT 7823216V0 IT 2321678 U IT2321678 U IT 2321678U IT 2321678 U IT2321678 U IT 2321678U IT 7823216 V0 IT7823216 V0 IT 7823216V0
- Authority
- IT
- Italy
- Prior art keywords
- conical cutting
- cutting rolls
- roller chisel
- chisel
- roller
- Prior art date
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)
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 (1)
Publication Number | Publication Date |
---|---|
IT7823216V0 true IT7823216V0 (it) | 1978-11-06 |
Family
ID=6026050
Family Applications (2)
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. |
IT2946478A IT1160045B (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 |
---|---|---|---|
IT2946478A IT1160045B (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) | IT7823216V0 (it) |
SE (1) | SE438706B (it) |
Families Citing this family (10)
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 |
KR101022104B1 (ko) * | 2005-05-31 | 2011-03-17 | 미츠비시 쥬고교 가부시키가이샤 | 풍력 터빈용 선회 베어링 구조체 및 풍력 발전 장치 |
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)
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. |
-
1977
- 1977-12-14 DE DE2755591A patent/DE2755591C2/de not_active Expired
-
1978
- 1978-11-06 IT IT2321678U patent/IT7823216V0/it unknown
- 1978-11-06 IT IT2946478A patent/IT1160045B/it active
- 1978-12-05 US US05/966,668 patent/US4249781A/en not_active Expired - Lifetime
- 1978-12-06 JP JP15016878A patent/JPS5492503A/ja active Granted
- 1978-12-06 GB GB7847408A patent/GB2010358B/en not_active Expired
- 1978-12-11 SE SE7812690A patent/SE438706B/sv unknown
- 1978-12-12 FR FR7834961A patent/FR2411957A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
SE438706B (sv) | 1985-04-29 |
GB2010358B (en) | 1982-03-24 |
FR2411957A1 (fr) | 1979-07-13 |
JPS5492503A (en) | 1979-07-21 |
JPS6135353B2 (it) | 1986-08-12 |
GB2010358A (en) | 1979-06-27 |
IT7829464A0 (it) | 1978-11-06 |
SE7812690L (sv) | 1979-06-15 |
FR2411957B1 (it) | 1983-08-05 |
DE2755591C2 (de) | 1985-11-07 |
DE2755591A1 (de) | 1979-06-21 |
IT1160045B (it) | 1987-03-04 |
US4249781A (en) | 1981-02-10 |
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