Patent US3324738A successfully refreshed from Google Patents.
US3324738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system
Assignee: Motors Liquidation Co
•
Filing: 1964-12-21
•
Granted: 1967-06-13
•
Expires: 1984-12-21
Abstract
No abstract record available.
Inventors
- 👤 Howard E Olsen
- 👤 Robert J Petry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:39
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/04; B60K17/10; Y; Y10; Y10S; Y10S74/00; Y10S74/01; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
IN COMBINATION; A MOVABLE CONTROLLER; A PRESSURE FLUID SOURCE; AND MEANS DEVELOPING A REFERENCE PRESSURE CORRESPONDING TO THE POSITION OF THE MOVABLE CONTROLLER; THE DEVELOPING MEANS INCLUDING AN ELECTRICALLY OPERATED VALVE, AN ENERGIZING CIRCUIT FOR OPERATING THE VALVE, THE ENERGIZING CIRCUIT INCLUDING AN ELECTRIC POWER SOURCE AND SWITCHING MEANS OPERATIVE TO CONNECT THE VALVE TO THE POWER SOURCE, MEANS SENSING THE POSITION OF THE MOVABLE CONTROLLER AND ALSO RESPONSIVE TO FLUID PRESSURE FOR OPERATING THE SWITCHING MEANS, AND FEEDBACK MEANS SUPPLYING THE REFERENCE PRESSURE TO THE SENSING MEANS SO THAT THE SENSING MEANS RESPONDS TO THE REFERENCE PRESSURE.
Claim 2
Dependent Claim
98 words
IN COMBINATION; A MOVABLE CONTROLLER; A PRESSURE FLUID SOURCE; AND MEANS DEVELOPING A REFERENCE PRESSURE CORRESPONDING TO THE POSITION OF THE MOVABLE CONTROLLER; THE DEVELOPING MEANS INCLUDING AN ELECTRICALLY OPERATED VALVE, AN ENERGIZING CIRCUIT FOR OPERATING THE VALVE, THE ENERGIZING CIRCUIT INCLUDING AN ELECTRIC POWER SOURCE AND SWITCHING MEANS OPERATIVE TO CONNECT THE VALVE TO THE POWER SOURCE, MEANS SENSING THE POSITION OF THE MOVABLE CONTROLLER AND ALSO RESPONSIVE TO FLUID PRESSURE FOR OPERATING THE SWITCHING MEANS, AND FEEDBACK MEANS SUPPLYING THE REFERENCE PRESSURE TO THE SENSING MEANS SO THAT THE SENSING MEANS RESPONDS TO THE REFERENCE PRESSURE.
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) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |