US3267762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control circuit for an automatic road vehicle transmission mechanism
Assignee: CAV Ltd
•
Filing: 1962-12-03
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Granted: 1966-08-23
•
Expires: 1982-12-03
Abstract
No abstract record available.
Inventors
- 👤 Reval Hardev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:10
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/02; F16H61/0202; F16H61/0204; F16H61/0206; F16H61/0211; F16H59/00; F16H59/36; F16H59/38; F16H59/40; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19423; Y10T74/19428; Y10T74/19437
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A CONTROL CIRCUIT FOR AUTOMATIC ROAD VEHICLE TRANSMISSION MECHANISM HAVING AN ACCELERATOR PEDAL AND THREE AUTOMATICALLY CONTROLLABLE GEARS, COMPRISING THREE ELECTROMAGNETS WHICH ARE ADAPTED WHEN ENERGISED TO ENGAGE SAID THREE GEARS RESPECTIVELY, A D.C. SOURCE HAVING ONE TERMINAL CONNECTED TO ONE END OF EACH OF THE ELECTROMAGNETS, A COMMON TRANSISTOR CONNECTED BETWEEN THE OTHER ENDS OF THE ELECTROMAGNETS AND THE OTHER TERMINAL OF THE D.C. SOURCE SO THAT CURRENT FLOWING TO ANY ELECTROMAGNET MUST FLOW THROUGH THE COMMON TRANSISTOR, MEANS FOR RENDERING SAID COMMON TRANSISTOR CONDUCTIVE WHEN SAID ECCELERATOR PEDAL IS DEPRESSED, MEANS FOR RENDERING SAID COMMON TRANSISTOR CONDUCTIVE WHEN THE VEHICLE ENGINE SPEED EXCEEDS A PREDETERMINED VALUE, AND SWITCH MEANS BETWEEN THE COMMON TRANSISTOR AND THE ELECTROMAGNETS, AND MEANS RESPONSIVE TO ENGINE FOR OPERATING THE SWITCH MEANS
Claim 2
Dependent Claim
128 words
A CONTROL CIRCUIT FOR AUTOMATIC ROAD VEHICLE TRANSMISSION MECHANISM HAVING AN ACCELERATOR PEDAL AND THREE AUTOMATICALLY CONTROLLABLE GEARS, COMPRISING THREE ELECTROMAGNETS WHICH ARE ADAPTED WHEN ENERGISED TO ENGAGE SAID THREE GEARS RESPECTIVELY, A D.C. SOURCE HAVING ONE TERMINAL CONNECTED TO ONE END OF EACH OF THE ELECTROMAGNETS, A COMMON TRANSISTOR CONNECTED BETWEEN THE OTHER ENDS OF THE ELECTROMAGNETS AND THE OTHER TERMINAL OF THE D.C. SOURCE SO THAT CURRENT FLOWING TO ANY ELECTROMAGNET MUST FLOW THROUGH THE COMMON TRANSISTOR, MEANS FOR RENDERING SAID COMMON TRANSISTOR CONDUCTIVE WHEN SAID ECCELERATOR PEDAL IS DEPRESSED, MEANS FOR RENDERING SAID COMMON TRANSISTOR CONDUCTIVE WHEN THE VEHICLE ENGINE SPEED EXCEEDS A PREDETERMINED VALUE, AND SWITCH MEANS BETWEEN THE COMMON TRANSISTOR AND THE ELECTROMAGNETS, AND MEANS RESPONSIVE TO ENGINE FOR OPERATING THE SWITCH MEANS
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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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |