US3256747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infinitely variable transmission
Assignee: Dowty Hydraulic Units Ltd
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Filing: 1964-01-07
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Granted: 1966-06-21
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Expires: 1984-01-07
Abstract
No abstract record available.
Inventors
- 👤 Bertram C Kempson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:12
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/4157; B; B60; B60K; B60K17/00; B60K17/04; B60K17/10; F02; F02D; F02D1/00; F16H61/46; F02D2700/00; F02D2700/02; F02D2700/0269; F02D2700/0282; F02D2700/0284
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
THE COMBINATION WITH AN ENGINE HAVING AN ENGINE SPEED GOVERN RESPONSIVE TO ENGINE SPEED TO CONTROL FUEL FLOW TO THE ENGINE TO TEND TO MAINTAIN ENGINE SPEED WITHIN A PREDETERMINED RANGE, OF AN INFINITELY VARIABLE SPEED RATIO POWER TRANSMISSION ADAPTED TO TRANSMIT POWER FROM THE ENGINE TO A LOAD, THE TRANSMISSION HAVING A TRANSMISSION GOVERNOR COMPRISING A FLYWEIGHT UNIT ROTATABLY DRIVEN BY THE ENGINE AND MEANS RESPONSIVE TO THE CENTRIFUGAL FORCE EXERTED ON THE FLYWEIGHTS TO REDUCE THE TRANSMISSION SPEED RATIO IN THE EVENT THAT ENGINE SPEED IS REDUCED BELOW A SPEED WITHIN PREDETERMINED RANGE OF THE ENGINE GOVERNOR.
Claim 2
Dependent Claim
99 words
THE COMBINATION WITH AN ENGINE HAVING AN ENGINE SPEED GOVERN RESPONSIVE TO ENGINE SPEED TO CONTROL FUEL FLOW TO THE ENGINE TO TEND TO MAINTAIN ENGINE SPEED WITHIN A PREDETERMINED RANGE, OF AN INFINITELY VARIABLE SPEED RATIO POWER TRANSMISSION ADAPTED TO TRANSMIT POWER FROM THE ENGINE TO A LOAD, THE TRANSMISSION HAVING A TRANSMISSION GOVERNOR COMPRISING A FLYWEIGHT UNIT ROTATABLY DRIVEN BY THE ENGINE AND MEANS RESPONSIVE TO THE CENTRIFUGAL FORCE EXERTED ON THE FLYWEIGHTS TO REDUCE THE TRANSMISSION SPEED RATIO IN THE EVENT THAT ENGINE SPEED IS REDUCED BELOW A SPEED WITHIN PREDETERMINED RANGE OF THE ENGINE GOVERNOR.
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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |