IT7829464A0 - 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
- IT7829464A0 IT7829464A0 IT7829464A IT2946478A IT7829464A0 IT 7829464 A0 IT7829464 A0 IT 7829464A0 IT 7829464 A IT7829464 A IT 7829464A IT 2946478 A IT2946478 A IT 2946478A IT 7829464 A0 IT7829464 A0 IT 7829464A0
- Authority
- IT
- Italy
- Prior art keywords
- conical shape
- cutting rollers
- shape cutting
- roller chisel
- chisel
- 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)
- Geology (AREA)
- Life Sciences & Earth Sciences (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)
- General Engineering & Computer Science (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 (2)
Publication Number | Publication Date |
---|---|
IT7829464A0 true IT7829464A0 (it) | 1978-11-06 |
IT1160045B 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)
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 |
EP1887237A4 (en) * | 2005-05-31 | 2011-11-02 | Mitsubishi Heavy Ind Ltd | ROLLING ANNULAR BEARING |
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 IT2946478A patent/IT1160045B/it active
- 1978-11-06 IT IT2321678U patent/IT7823216V0/it unknown
- 1978-12-05 US US05/966,668 patent/US4249781A/en not_active Expired - Lifetime
- 1978-12-06 GB GB7847408A patent/GB2010358B/en not_active Expired
- 1978-12-06 JP JP15016878A patent/JPS5492503A/ja active Granted
- 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 |
---|---|
IT7823216V0 (it) | 1978-11-06 |
JPS6135353B2 (it) | 1986-08-12 |
SE438706B (sv) | 1985-04-29 |
GB2010358B (en) | 1982-03-24 |
DE2755591C2 (de) | 1985-11-07 |
IT1160045B (it) | 1987-03-04 |
GB2010358A (en) | 1979-06-27 |
US4249781A (en) | 1981-02-10 |
DE2755591A1 (de) | 1979-06-21 |
FR2411957B1 (it) | 1983-08-05 |
SE7812690L (sv) | 1979-06-15 |
JPS5492503A (en) | 1979-07-21 |
FR2411957A1 (fr) | 1979-07-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
IT7827967A0 (it) | Cuscinetto a rulli. | |
IT7823119A0 (it) | Rullo di costipamento a vibrazioni. | |
NL185298C (nl) | Rollenbeitel. | |
IT1125743B (it) | Cuscinetto antifrizione,particolarmente cuscinetto a rulli conici | |
IT8023461A0 (it) | Cuscinetto a rulli. | |
NL7704700A (nl) | Rol. | |
NO140685C (no) | Valse. | |
IT7829464A0 (it) | Scalpello a rulli con rulli di taglio di forma conica. | |
IT7822008A0 (it) | Rullatrice per anelli. | |
NL7713203A (nl) | Dubbele neergaande stapelaar met opzij bewe- gende transporteur. | |
NO773559L (no) | Anordnning ved rullebane. | |
NL7903895A (nl) | Venstereenheid met een schuifraamvasthoudorgaan. | |
NL7414373A (nl) | Reinigingsrolinrichting met een vernieuwd reinigingsoppervlak. | |
NL7711402A (nl) | Zuigwals. | |
IT7831268A0 (it) | 4a-aril-ottaidro-piridine ad azione analgesica. | |
IT1212367B (it) | Scalpello a rulli provvisto di numerosi rulli di taglio. | |
IT7819455A0 (it) | Dispositivo perfezionato di avanzamento a rulli controrotanti. | |
IT7829975A0 (it) | Scalpello a rulli provvisto di numerosi rulli di taglio. | |
NL184251C (nl) | Verkruimelrol. | |
IT7922644A0 (it) | Scalpello a rulli con rulli di taglio. | |
IT7829463A0 (it) | Rullo di rotolamento. | |
IT7821850A0 (it) | Trasportatore a rulli del tipo ad accumulazione. | |
NL7811641A (nl) | Extrusiemachine. | |
IT7830620A0 (it) | Rullo per la fabbricazione a galleggiamento di vetro. | |
ES218426Y (es) | Un rodillo para formar un dibujo decorativo irregular. |