US3155188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction feed-back speed control
Assignee: Motors Liquidation Co
•
Filing: 1961-08-21
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Granted: 1964-11-03
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Expires: 1981-08-21
Abstract
No abstract record available.
Inventors
- 👤 Donald D Stoltman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:31
CPC Classifications
B; B60; B60K; B60K31/00; B60K31/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN A ROAD SPEED CONTROL SYSTEM FOR A VEHICLE HAVING AN ENGINE CONTROLLED BY A THROTTLE OPERABLE BY A FLUID SERVO, A NEGATIVE FEED-BACK ARRANGEMENT COMPRISING, A VALVE BODY HAVING FIRST AND SECOND CONTROL ORIFICES IN SERIES FLOW RELATION AND A THIRD ORIFICE IN PARALLEL FLOW RELATION TO SAID SECOND ORIFICE, SAID ORIFICES BEING IN FLUID CONTROL CONNECTION WITH THE THROTTLE SERVO, VALVE MEANS IN SAID VALVE BODY FOR OPENING AND CLOSING SAID THIRD ORIFICE TO SHIFT CONTROL OF THE THROTTLE SERVO BETWEEN SAID FIRST AND SECOND ORIFICES, AND MEANS RESPONSIVE TO THE OPENING AND CLOSING THROTTLE MOVEMENT OF THE SYSTEM AND CONNECTED TO CONTROL SAID VALVE MEANS IN ACCORDANCE WITH THE THROTTLE MOVEMENT.
Claim 2
Dependent Claim
114 words
IN A ROAD SPEED CONTROL SYSTEM FOR A VEHICLE HAVING AN ENGINE CONTROLLED BY A THROTTLE OPERABLE BY A FLUID SERVO, A NEGATIVE FEED-BACK ARRANGEMENT COMPRISING, A VALVE BODY HAVING FIRST AND SECOND CONTROL ORIFICES IN SERIES FLOW RELATION AND A THIRD ORIFICE IN PARALLEL FLOW RELATION TO SAID SECOND ORIFICE, SAID ORIFICES BEING IN FLUID CONTROL CONNECTION WITH THE THROTTLE SERVO, VALVE MEANS IN SAID VALVE BODY FOR OPENING AND CLOSING SAID THIRD ORIFICE TO SHIFT CONTROL OF THE THROTTLE SERVO BETWEEN SAID FIRST AND SECOND ORIFICES, AND MEANS RESPONSIVE TO THE OPENING AND CLOSING THROTTLE MOVEMENT OF THE SYSTEM AND CONNECTED TO CONTROL SAID VALVE MEANS IN ACCORDANCE WITH THE THROTTLE MOVEMENT.
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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) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |