Vacuum motor adapted for use in a vehicle speed control mechanism
Abstract
Abstract A VACUUM MOTOR WHICH IS ESPECIALLY ADAPTED FOR USE IN A SPEED CONTROL MECHANISM FOR AN AUTOMOTIVE VEHICLE IN WHICH A FLEXIBLE DIAPHRAGM IS POSITINED IN THE HOUSING OF THE MOTOR AND COOPERATES WITH THE HOUSING TO FORM A CHAMBER. MEANS ARE PROVIDED COMMUNICATING WITH THE CHAMBER AND THE FLEXIBLE DIAPHRAGM FOR APPLYING A VARYING PRESSURE TO THE CHAMBER AND HENCE THE DIAPHRAGM SO THAT THE DIAPHRAGM IS MOVED AS A FUNCTION OF THE PRESSURE APPLIED THERETO. THE DIAPHRAGM IS ADATED TO BE CONNECTED TO A MOVABLE CONTROLLER MEANS FOR CONTROLLING THE SPEED OF THE VEHICLE IN ACCORDANCE WITH THE POSITION OF THE DIAPHRAGM. MOVABLE MEANS ARE COUPLED TO THE DIAPHRAGM AND ARE POSITIONED WITHIN THE CHAMBER. THE VACUUM MOTOR INCLUDES ELECTRICL CIRCUIT MEANS AND SAID MOVABLE MEANS COOPERATES WITH THE ELECTRICAL CIRCUIT MEANS FOR VARYING THE VALUE OF A PARAMETER OF THE ELECTRICAL CIRCUIT MEANS AS A FUNCTION OF THE POSITION OF THE DIAPHRAGM AND THE MOVABLE MEANS.
Inventors
- 👤 Gary F Woodward
Bibliographic Details
Claims Analysis
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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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |