US3198985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic cruise control system for motor vehicles
Assignee: Motors Liquidation Co
•
Filing: 1960-04-11
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Granted: 1965-08-03
•
Expires: 1980-04-11
Abstract
No abstract record available.
Inventors
- 👤 John W Haskell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:54
CPC Classifications
F; F02; F02D; F02D31/00; F02D31/001; F02D31/002; B; B60; B60K; B60K31/00; B60K31/06; B60K31/10; B60K31/102
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A SPEED REGULATING SYSTEM FOR A MOTOR VEHICLE INCLUDING, A DIRECT CURRENT SOURCE, MEANS DEVELOPING AN ALTERNATING CURRENT SIGNAL FROM SAID DIRECT CURRENT SOURCE HAVING A FREQUENCY PROPORTIONAL TO VEHICLE SPEED, DIFFERENTIATING MEANS FOR SAID ALTERNATING CURRENT SPEED SIGNAL, RECTIFYING MEANS HAVING AN INPUT COMPRISING SAID DIFFERENTIATED SPEED SIGNAL AND AN OUTPUT COMPRISING A DIRECT CURRENT SIGNAL HAVING A VOLTAGE PROPORTIONAL TO VEHICLE SPEED MEANS DERIVING A SOURCE OF DIRECT CURRENT REFERENCE VOLTAGE FROM SAID DIRECT CURRENT SOURCE, MANUAL MEANS FOR ADJUSTING SAID REFERENCE VOLTAGE TO SELECT THE DESIRED SPEED LEVEL, MEANS COMPARING THE REFERENCE VOLTAGE AND THE SPEED SIGNAL VOLTAGE FOR OBTAINING A DIFFERENCE VOLTAGE, AN AMPLIFIER RESPONSIVE TO SAID DIFFERENCE VOLTAGE, AND VEHICLE SPEED CONTROL MEANS ACTUATED BY THE OUTPUT OF SAID AMPLIFIER FOR MAINTAINING VEHICLE SPEED SUBSTANTIALLY CONSTANT AT THE MANUALLY PRESELECTED SPEED LEVEL.
Claim 2
Dependent Claim
137 words
A SPEED REGULATING SYSTEM FOR A MOTOR VEHICLE INCLUDING, A DIRECT CURRENT SOURCE, MEANS DEVELOPING AN ALTERNATING CURRENT SIGNAL FROM SAID DIRECT CURRENT SOURCE HAVING A FREQUENCY PROPORTIONAL TO VEHICLE SPEED, DIFFERENTIATING MEANS FOR SAID ALTERNATING CURRENT SPEED SIGNAL, RECTIFYING MEANS HAVING AN INPUT COMPRISING SAID DIFFERENTIATED SPEED SIGNAL AND AN OUTPUT COMPRISING A DIRECT CURRENT SIGNAL HAVING A VOLTAGE PROPORTIONAL TO VEHICLE SPEED MEANS DERIVING A SOURCE OF DIRECT CURRENT REFERENCE VOLTAGE FROM SAID DIRECT CURRENT SOURCE, MANUAL MEANS FOR ADJUSTING SAID REFERENCE VOLTAGE TO SELECT THE DESIRED SPEED LEVEL, MEANS COMPARING THE REFERENCE VOLTAGE AND THE SPEED SIGNAL VOLTAGE FOR OBTAINING A DIFFERENCE VOLTAGE, AN AMPLIFIER RESPONSIVE TO SAID DIFFERENCE VOLTAGE, AND VEHICLE SPEED CONTROL MEANS ACTUATED BY THE OUTPUT OF SAID AMPLIFIER FOR MAINTAINING VEHICLE SPEED SUBSTANTIALLY CONSTANT AT THE MANUALLY PRESELECTED SPEED LEVEL.
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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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |