Patent US4700496A successfully refreshed from Google Patents.
Patent US3305055A successfully refreshed from Google Patents.
US3305055A
Expired / Lapsed
US
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Fluid particle coupling
Assignee: Individual
•
Filing: 1964-08-21
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Granted: 1967-02-21
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Expires: 1984-08-21
Abstract
No abstract record available.
Inventors
- 👤 Clarence S Slaughter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:52
CPC Classifications
F; F16; F16D; F16D57/00; F16D57/002; F16D37/00; F16D37/02; F16D2037/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A FLUID PARTICLE COUPLING SUCH AS A BRAKE OR CLUTCH COMPRISING: (A) A THIN FLAT CIRCULAR DISC; (B) A SHAFT EXTENDING NORMAL TO SAID DISC AND FROM THE CENTER OF SAID DISC; (C) A MAGNET RING ECCENTRIC ABOUT SAID SHAFT AND THE POLE FACES OF SAID MAGNET RING BEING PARALLEL TO SAID DISC IN SPACED PARALLEL PLANE RELATION THERETO AND WITHIN THE PERIPHERAL EXTENT OF SAID DISC; (D) AN ELECTRIC COIL IN SAID RING;
Claim 2
Dependent Claim
74 words
A FLUID PARTICLE COUPLING SUCH AS A BRAKE OR CLUTCH COMPRISING: (A) A THIN FLAT CIRCULAR DISC; (B) A SHAFT EXTENDING NORMAL TO SAID DISC AND FROM THE CENTER OF SAID DISC; (C) A MAGNET RING ECCENTRIC ABOUT SAID SHAFT AND THE POLE FACES OF SAID MAGNET RING BEING PARALLEL TO SAID DISC IN SPACED PARALLEL PLANE RELATION THERETO AND WITHIN THE PERIPHERAL EXTENT OF SAID DISC; (D) AN ELECTRIC COIL IN SAID RING;
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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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |