US3302474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed power transmission
Assignee: Individual
•
Filing: 1964-12-21
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Granted: 1967-02-07
•
Expires: 1984-12-21
Abstract
No abstract record available.
Inventors
- 👤 William N Edlich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:46
CPC Classifications
F; F16; F16H; F16H15/00; F16H15/02; F16H15/04; F16H15/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A VARIABLE SPEED TRANSMISSION COMPRISING A DRIVING SHAFT, A SECONDARY SHAFT ROTATABLE COAXIALLY WITH AND RELATIVELY TO SAID DRIVING SHAFT, A FRICTION WHEEL ON AND ROTATABLE WITH EACH SAID SHAFT AN HAVING A PERIPHERAL FRICTION SURFACE THAT VARIES IN DIAMETER AXIALLY OF SAID SHAFT, AND A ROTATABLE TRANSMISSION DISC FRICTIONALLY CONTACTING SAID FRICTION SURFACES OF SAID FRICTION WHEELS SO THAT SAID WHEEL ON SAID SECONDARY SHAFT IS DRIVEN FROM THE OTHER WHEEL, THE WHEEL-CONTACTING SURFACE OF SAID DISC BEING A LAMINATE IN WHICH THE EDGES OF THE LAMELLAE ARE DISPOSED SUBSTANTIALLY PERPENDICULARLY TO THE FRICTION SURFACE OF SAID FRICTION WHEELS ON WHICH SAID LAMINATE BEARS.
Claim 2
Dependent Claim
105 words
A VARIABLE SPEED TRANSMISSION COMPRISING A DRIVING SHAFT, A SECONDARY SHAFT ROTATABLE COAXIALLY WITH AND RELATIVELY TO SAID DRIVING SHAFT, A FRICTION WHEEL ON AND ROTATABLE WITH EACH SAID SHAFT AN HAVING A PERIPHERAL FRICTION SURFACE THAT VARIES IN DIAMETER AXIALLY OF SAID SHAFT, AND A ROTATABLE TRANSMISSION DISC FRICTIONALLY CONTACTING SAID FRICTION SURFACES OF SAID FRICTION WHEELS SO THAT SAID WHEEL ON SAID SECONDARY SHAFT IS DRIVEN FROM THE OTHER WHEEL, THE WHEEL-CONTACTING SURFACE OF SAID DISC BEING A LAMINATE IN WHICH THE EDGES OF THE LAMELLAE ARE DISPOSED SUBSTANTIALLY PERPENDICULARLY TO THE FRICTION SURFACE OF SAID FRICTION WHEELS ON WHICH SAID LAMINATE BEARS.
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |