US3354873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant speed control system
Assignee: Motors Liquidation Co
•
Filing: 1965-10-21
•
Granted: 1967-11-28
•
Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 John B Burnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:31
CPC Classifications
F; F02; F02D; F02D9/00; F02D2700/00; F02D2700/02; F02D2700/0217; F02D2700/0225; F02D2700/0228; F02D2700/023; F02D2700/0235
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
129 words
IN A VEHICLE, THE COMBINATION OF AN ENGINE HAVING A THROTTLE VALVE AND A SOURCE OF AIR WHICH CHANGES IN ABSOLUTE PRESSURE BY AN AMOUNT AND IN A DIRECTION WHICH DIRECTLY VARIES IN ACCORDANCE WITH THE AMOUNT AND DIRECTION OF POWER DEMAND CHANGE MADE ON THE ENGINE BY CHANGES IN VEHICLE ROAD LOAD AND IS FURTHER VARIABLE DIRECTED IN ACCORDANCE WITH THE AMOUNT OF CHANGE IN THROTTLE VALVE OPENING, CONTROL MEANS RESPONSIVE TO SAID CHANGES IN ABSOLUTE PRESSURE, AND MEANS CONTROLLED BY SAID CONTROL MEANS FOR PRODUCING A FORCE FOR MOVING SAID THROTTLE VALVE IN A DIRECTION TO CHANGE THE ABSOLUTE PRESSURE IN THE SAME DIRECTION TO CHANGE THE ENGINE DELIVERED POWER IN DIRECT RELATION TO THE POWER DEMAND CHANGES TO MAINTAIN THE VEHICLE AT A STABLE ROAD SPEED.
References Cited (Backward Citations)
US3125178A
Cited
US2672855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |