US3331637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutter bits and mounting means therefor
Assignee: Cincinnati Mine Machinery Co
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Filing: 1965-05-07
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Granted: 1967-07-18
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Expires: 1985-05-07
Abstract
No abstract record available.
Inventors
- 👤 Claude B Krekeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:10
CPC Classifications
E; E21; E21C; E21C35/00; E21C35/18; E21C35/183; E21C35/1831; E21C35/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A CUTTER BIT FOR A MINING MACHINE HAVING A TAPERING BODY PORTION WITH A HOLLOW FORMED THEREIN SO AS TO PROVIDE A SKIRT, SAID BODY PORTION HAVING AT LEAST ONE CONFIGURATION FORMED IN THE END PORTION OF SAID SKIRT EFFECTIVELY DIMINISHING THE INSIDE TRANSVERSE DIMENSION OF THE SAID SKIRT AT THE POINT OF FORMATION OF SAID CONFIGURATION, SAID END PORTION OF SAID SKIRT BEIG RESILIENTLY DISTORTABLE.
Claim 2
Dependent Claim
66 words
A CUTTER BIT FOR A MINING MACHINE HAVING A TAPERING BODY PORTION WITH A HOLLOW FORMED THEREIN SO AS TO PROVIDE A SKIRT, SAID BODY PORTION HAVING AT LEAST ONE CONFIGURATION FORMED IN THE END PORTION OF SAID SKIRT EFFECTIVELY DIMINISHING THE INSIDE TRANSVERSE DIMENSION OF THE SAID SKIRT AT THE POINT OF FORMATION OF SAID CONFIGURATION, SAID END PORTION OF SAID SKIRT BEIG RESILIENTLY DISTORTABLE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |