Patent US4630727A successfully refreshed from Google Patents.
Patent US3364765A successfully refreshed from Google Patents.
US3364765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recording and reproducing apparatus
Assignee: RCA Corp
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Filing: 1966-02-25
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Granted: 1968-01-23
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Expires: 1986-02-25
Abstract
No abstract record available.
Inventors
- 👤 Dallas R Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:10
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/46; G11B15/50; G11B15/02; G11B15/05; G11B15/06; G11B15/1883; G11B15/26; G11B15/28; G11B15/44; G11B15/442
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A DRIVE MECHANISM WHICH COMPRISES A PAIR OF ROTATABLE MEMBERS, AND A BELT OF RESILIENT MATERIAL COUPLING SAID MEMBERS IN DRIVING RELATIONSHIP, SAID BELT HAVING A GENERALLY CIRCULAR CROSS-SECTION, AT LEAST ONE OF SAID MEMBERS HAVING A CYLINDRICAL SURFACE WITH AN ANNULAR GROOVE EXTENDING THEREAROUND, SAID GROOVE BEING SMALLER IN WIDTH THAN THE DIAMETER OF SAID BELT, AND SAID BELT BEING TRAINED OVER SAID CYLINDRICAL SURFACE AND SAID GROOVE AND EXTENDING PARTIALLY INTO SAID GROOVE SO THAT SAID BELT IS IN LINE CONTACT WITH SAID GROOVE.
Claim 2
Dependent Claim
86 words
A DRIVE MECHANISM WHICH COMPRISES A PAIR OF ROTATABLE MEMBERS, AND A BELT OF RESILIENT MATERIAL COUPLING SAID MEMBERS IN DRIVING RELATIONSHIP, SAID BELT HAVING A GENERALLY CIRCULAR CROSS-SECTION, AT LEAST ONE OF SAID MEMBERS HAVING A CYLINDRICAL SURFACE WITH AN ANNULAR GROOVE EXTENDING THEREAROUND, SAID GROOVE BEING SMALLER IN WIDTH THAN THE DIAMETER OF SAID BELT, AND SAID BELT BEING TRAINED OVER SAID CYLINDRICAL SURFACE AND SAID GROOVE AND EXTENDING PARTIALLY INTO SAID GROOVE SO THAT SAID BELT IS IN LINE CONTACT WITH SAID GROOVE.
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) | 1971-01-22 | 1971-07-24 | 1972-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-22 | 1975-07-24 | 1976-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-22 | 1979-07-24 | 1980-01-23 | $7700.00 | Window Closed / Lapsed |