Patent US3137355A successfully refreshed from Google Patents.
US3137355A
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Assignee: Reed Roller Bit Co
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Filing: 1962-05-31
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Granted: 1964-06-16
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Expires: 1982-05-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Percy W Schumacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:12
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/50; E21B10/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A ROLLER CUTTER FOR A WELL DRILL COMPRISING A BODY HAVING A PLURALITY OF FRUSTO-CONICAL BOSSES INTEGRAL THEREWITH, EACH BOSS TERMINATING OUTWARDLY IN A FLAT CIRCULAR SURFACE, EACH BOSS HAVING A SOCKET EXTENDING THROUGH SAID BOSS INTO SAID BODY, AND A WEAR-RESISTANT INSERT SUBSTANTIALLY CYLINDRICAL IN ITS SHANK PART AND PROVIDED WITH A CONICAL CUTTING TIP PRESSED INTO EACH SAID SOCKET AND
Claim 2
Dependent Claim
62 words
A ROLLER CUTTER FOR A WELL DRILL COMPRISING A BODY HAVING A PLURALITY OF FRUSTO-CONICAL BOSSES INTEGRAL THEREWITH, EACH BOSS TERMINATING OUTWARDLY IN A FLAT CIRCULAR SURFACE, EACH BOSS HAVING A SOCKET EXTENDING THROUGH SAID BOSS INTO SAID BODY, AND A WEAR-RESISTANT INSERT SUBSTANTIALLY CYLINDRICAL IN ITS SHANK PART AND PROVIDED WITH A CONICAL CUTTING TIP PRESSED INTO EACH SAID SOCKET AND
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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |