US3086601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rock bit with means for resisting radial thrust
Assignee: Hughes Tool Co
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Filing: 1960-07-25
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Granted: 1963-04-23
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Expires: 1980-07-25
Abstract
No abstract record available.
Inventors
- 👤 Edward M Galle
- 👤 Floyd L Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:07
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN A CONVENTIONAL ROLLING CONE WELL DRILL INCLUDING A HEAD AND A MULTIPLICITY OF CONICAL CUTTERS DISPOSED BELOW THE HEAD WITH THEIR AXES OF ROTATION INCLINED DOWNWARDLY AND INWARDLY WITH RESPECT TO THE AXIS OF THE DRILL, SUCH CUTTERS BEING DISPOSED WITH THEIR SMALL ENDS CONFRONTING ONE ANOTHER PROXIMATE THE AXIS OF THE BIT, THE IMPROVEMENT TO ELIMINATE INWARD MOVEMENT OF THE CUTTERS UNDER RADIAL FORCES COMPRISING (A) A PERIPHERAL RACEWAY ON EACH CUTTER PROXIMATE ITS INNER END, EACH SAID RACEWAY BEING ANNULAR WITH RESPECT TO THE AXIS OF THE ASSOCIATED CUTTER AND CONCENTRIC THEREWITH, AND (B) A THRUST MEMBER HAVING AN EXTERIOR SURFACE OF REVOLUTION DISPOSED WITH ITS AXIS OF REVOLUTION SUBSTANTIALLY COINCIDENT WITH THE AXIS OF THE BIT AND ALSO BEING DISPOSED ABOVE AND ADJACENT THE INNER ENDS OF
Claim 2
Dependent Claim
131 words
IN A CONVENTIONAL ROLLING CONE WELL DRILL INCLUDING A HEAD AND A MULTIPLICITY OF CONICAL CUTTERS DISPOSED BELOW THE HEAD WITH THEIR AXES OF ROTATION INCLINED DOWNWARDLY AND INWARDLY WITH RESPECT TO THE AXIS OF THE DRILL, SUCH CUTTERS BEING DISPOSED WITH THEIR SMALL ENDS CONFRONTING ONE ANOTHER PROXIMATE THE AXIS OF THE BIT, THE IMPROVEMENT TO ELIMINATE INWARD MOVEMENT OF THE CUTTERS UNDER RADIAL FORCES COMPRISING (A) A PERIPHERAL RACEWAY ON EACH CUTTER PROXIMATE ITS INNER END, EACH SAID RACEWAY BEING ANNULAR WITH RESPECT TO THE AXIS OF THE ASSOCIATED CUTTER AND CONCENTRIC THEREWITH, AND (B) A THRUST MEMBER HAVING AN EXTERIOR SURFACE OF REVOLUTION DISPOSED WITH ITS AXIS OF REVOLUTION SUBSTANTIALLY COINCIDENT WITH THE AXIS OF THE BIT AND ALSO BEING DISPOSED ABOVE AND ADJACENT THE INNER ENDS OF
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |