US3302983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizer
Assignee: DRILCO OIL TOOLS Inc
•
Filing: 1964-01-14
•
Granted: 1967-02-07
•
Expires: 1984-01-14
Abstract
No abstract record available.
Inventors
- 👤 William R Garrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:22
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/10; E21B17/1057
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A DRILL STRING STABILIZER COMPRISING A BODY HAVING A FLOW PASSAGE EXTENDING VERTICALLY THERETHROUGH, MEANS FOR CONNECTING THE BODY IN A DRILL STRING, A PLURALITY OF ROLLING, WALL-CONTACTING MEANS EACH INCLUDING AN AXLE AND A ROLLER ROTATABLY DISPOSED ON THE AXLE, BRACKET MEANS FOR SUPPORTING EACH WALL-CONTACTING MEANS, MEANS CONNECTING SAID BRACKET MEANS TO SAID BODY AT AZIMUTHALLY SPACED APART POSITIONS AROUND THE BODY, AND MEANS RELEASABLY MOUNTING EACH AXLE ON ITS BRACKET MEANS, EACH SAID MOUNTING MEANS INCLUDING UPPER AND LOWER DISCS DISPOSED AT THE ENDS OF THE AXLE, ONE OF SAID DISCS BEING FIXED TO THE AXLE AND THE OTHER RELEASABLY DISPOSED IN AN OPENING THEREIN, EACH OF SAID DISCS HAVING A SLOT IN ITS FACE ON THE OPPOSITE SIDE THEREOF FROM SAID AXLE, SAID SLOTS RECEIVING RESPECTIVELY THE UNDER SIDE OF THE TOP PART OF THE BRACKET MEANS AND THE TOP SIDE OF THE LOWER PART OF THE BRACKET MEANS, AND MEANS RELEASABLY SECURING SAID DISCS TO SAID BRACKET MEANS.
Claim 2
Dependent Claim
163 words
A DRILL STRING STABILIZER COMPRISING A BODY HAVING A FLOW PASSAGE EXTENDING VERTICALLY THERETHROUGH, MEANS FOR CONNECTING THE BODY IN A DRILL STRING, A PLURALITY OF ROLLING, WALL-CONTACTING MEANS EACH INCLUDING AN AXLE AND A ROLLER ROTATABLY DISPOSED ON THE AXLE, BRACKET MEANS FOR SUPPORTING EACH WALL-CONTACTING MEANS, MEANS CONNECTING SAID BRACKET MEANS TO SAID BODY AT AZIMUTHALLY SPACED APART POSITIONS AROUND THE BODY, AND MEANS RELEASABLY MOUNTING EACH AXLE ON ITS BRACKET MEANS, EACH SAID MOUNTING MEANS INCLUDING UPPER AND LOWER DISCS DISPOSED AT THE ENDS OF THE AXLE, ONE OF SAID DISCS BEING FIXED TO THE AXLE AND THE OTHER RELEASABLY DISPOSED IN AN OPENING THEREIN, EACH OF SAID DISCS HAVING A SLOT IN ITS FACE ON THE OPPOSITE SIDE THEREOF FROM SAID AXLE, SAID SLOTS RECEIVING RESPECTIVELY THE UNDER SIDE OF THE TOP PART OF THE BRACKET MEANS AND THE TOP SIDE OF THE LOWER PART OF THE BRACKET MEANS, AND MEANS RELEASABLY SECURING SAID DISCS TO SAID BRACKET MEANS.
References Cited (Backward Citations)
US3103391A
Cited
US712486A
Cited
US892849A
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US879822A
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US1905158A
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US1923328A
Cited
NL38180C
Cited
US2669441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |