US3280648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable-ratio drive mechanism
Assignee: Imperial Electric Co
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Filing: 1964-05-08
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Granted: 1966-10-25
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Expires: 1984-05-08
Abstract
No abstract record available.
Inventors
- 👤 Bertel S Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:58
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/66; F16H61/662; F16H61/66231; F16H61/66245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
VARIABLE-SPEED DRIVE MECHANISM WHICH INCLUDES A DRIVER SHAFT AND AN OUTPUT SHAFT, A SHEAVE ON EACH SHAFT, SAID SHEAVE ON THE FIRST SHAFT BEING COMPOSED OF TWO SUBSTANTIALLY CONE-SHAPED MEMBERS AT LEAST ONE OF WHICH IS MOVABLE AXIALLY OF THE SHAFT, STOP MEANS WHICH IS ADJUSTABLE TO PROVIDE VARIOUS MINIMUM SPACINGS OF THE CONE-SHAPED MEMBERS, A FLEXIBLE BELT BETWEEN AND CONNECTING SAID SHEAVES, BELT-TENSIONING MEANS SUFFICIENT TO PROVIDE FRICTIONAL DRIVE OF THE OUTPUT SHAFT BY THE BELT, AND CENTRIFUGALLY OPERATED MECHANISM ADAPTED TO ROTATE WITH THE SHEAVE ON SAID FIRST SHAFT THE CENTRIFUGAL FORCE
Claim 2
Dependent Claim
94 words
VARIABLE-SPEED DRIVE MECHANISM WHICH INCLUDES A DRIVER SHAFT AND AN OUTPUT SHAFT, A SHEAVE ON EACH SHAFT, SAID SHEAVE ON THE FIRST SHAFT BEING COMPOSED OF TWO SUBSTANTIALLY CONE-SHAPED MEMBERS AT LEAST ONE OF WHICH IS MOVABLE AXIALLY OF THE SHAFT, STOP MEANS WHICH IS ADJUSTABLE TO PROVIDE VARIOUS MINIMUM SPACINGS OF THE CONE-SHAPED MEMBERS, A FLEXIBLE BELT BETWEEN AND CONNECTING SAID SHEAVES, BELT-TENSIONING MEANS SUFFICIENT TO PROVIDE FRICTIONAL DRIVE OF THE OUTPUT SHAFT BY THE BELT, AND CENTRIFUGALLY OPERATED MECHANISM ADAPTED TO ROTATE WITH THE SHEAVE ON SAID FIRST SHAFT THE CENTRIFUGAL FORCE
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |