US3081829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill bit
Assignee: Individual
•
Filing: 1959-12-01
•
Granted: 1963-03-19
•
Expires: 1979-12-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward B Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:54
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A ROTARY DRILL BIT ADAPTED TO BE ROTATED BY A ROTARY DRILL STEM FOR DRILLING BORE HOLES INTO EARTH FORMATIONS, SAID DRILL BIT COMPRISING A BODY MEMBER HAVING DEPENDING ARMS SPACED FROM A VERTICAL AXIS OF THE BODY MEMBER, A DRILL STEM CONNECTION ON THE BODY MEMBER OFFSET LATERALLY FROM THE AXIS OF THE BODY MEMBER ON THE SIDE OPPOSITE ONE OF THE DEPENDING ARMS TO PROVIDE AN AXIS OF ROTATION FOR THE DRILL BIT WHEN THE ROTARY DRILL STEM IS CONNECTED THERETO FOR EFFECTING GYRATION OF THE BODY MEMBER ABOUT SAID ROTATIONAL AXIS, SPINDLES EXTENDING DOWNWARDLY AND INWARDLY FROM SAID DEPENDING ARMS TOWARD THE AXIS OF SAID BODY MEMBER, AND TOOTHED CUTTERS ROTATABLE ON THE SPINDLES TO ROLL IN CIRCULAR PATHS IN SUBSTANTIALLY THE SAME PLANE DURING GYRATION OF SAID BODY MEMBER FOR CHIPPING AWAY THE BOTTOM OF THE BORE HOLE, THE CUTTER ASSOCIATED WITH SAID ONE ARM HAVING OUTER TEETH
Claim 2
Dependent Claim
152 words
A ROTARY DRILL BIT ADAPTED TO BE ROTATED BY A ROTARY DRILL STEM FOR DRILLING BORE HOLES INTO EARTH FORMATIONS, SAID DRILL BIT COMPRISING A BODY MEMBER HAVING DEPENDING ARMS SPACED FROM A VERTICAL AXIS OF THE BODY MEMBER, A DRILL STEM CONNECTION ON THE BODY MEMBER OFFSET LATERALLY FROM THE AXIS OF THE BODY MEMBER ON THE SIDE OPPOSITE ONE OF THE DEPENDING ARMS TO PROVIDE AN AXIS OF ROTATION FOR THE DRILL BIT WHEN THE ROTARY DRILL STEM IS CONNECTED THERETO FOR EFFECTING GYRATION OF THE BODY MEMBER ABOUT SAID ROTATIONAL AXIS, SPINDLES EXTENDING DOWNWARDLY AND INWARDLY FROM SAID DEPENDING ARMS TOWARD THE AXIS OF SAID BODY MEMBER, AND TOOTHED CUTTERS ROTATABLE ON THE SPINDLES TO ROLL IN CIRCULAR PATHS IN SUBSTANTIALLY THE SAME PLANE DURING GYRATION OF SAID BODY MEMBER FOR CHIPPING AWAY THE BOTTOM OF THE BORE HOLE, THE CUTTER ASSOCIATED WITH SAID ONE ARM HAVING OUTER TEETH
References Cited (Backward Citations)
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Cited
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US1515819A
Cited
US1859948A
Cited
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Cited
US2119618A
Cited
US2249926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |