Patent US3095627A successfully refreshed from Google Patents.
US3095627A
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US
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Assignee: MCEVOY CO
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Filing: 1960-02-09
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Granted: 1963-07-02
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Expires: 1980-02-09
Abstract
No abstract record available.
Inventors
- 👤 Charles F Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:11
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/0422
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
66 words
A SLIP HAVING A GENERALLY SEGMENTAL CYLINDRICAL FACE WITH SHARP TEETH ON SAID CYLINDRICAL FACE AND HAVING AN OPPOSITE FACE TAPERING RELATIVE TO THE AXIS OF SAID CYLINDRICAL FACE, SAID TAPERING FACE HAVING PARTICLES OF IRREGULAR SIZE AND SURFACE CONFIGURATION SECURED ON SAID TAPERING FACE IN ABUTTING SURFACE CONTACT WITH THE OUTER SURFACE THEREOF WITH SAID PARTICLES BEING HARDER THAN THE BASE MATERIAL OF SAID SLIP.
References Cited (Backward Citations)
CH41478A
Cited
US1852695A
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US2086652A
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US2312487A
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US2490512A
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US2576528A
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US2683045A
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US2824757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-01 | 1966-12-31 | 1967-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-01 | 1970-12-31 | 1971-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-01 | 1974-12-31 | 1975-07-02 | $7700.00 | Window Closed / Lapsed |