US3588813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire pressure signal system
Assignee: Individual
•
Filing: 1967-08-17
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Granted: 1971-06-28
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Expires: 1987-08-17
Abstract
Abstract A TIRE PRESSURE SENSING DEVICE COMPRISING A HOUSING WITH A FLOATING SPRING-BIASED PISTON MOVABLE BETWEEN AXIAL POSITIONS CORRESPONDING TO NORMAL AND ABNORMAL TIRE PRESSURES IS MOUNTED WITHIN THE PROFILE OF THE WHEEL RIM SUPPORTING THE TIRE. A FLEXIBLE DIAPHRAGM HAVING ONE SIDE EXPOSED TO TIRE PRESSURE AND ITS OPPOSITE SIDE ENGAGING THE PISTON URGES THE PISTON INTO ABUTMENT WITH AN ELECTRICAL CONTACT WHEN AN ABNORMAL PRESSURE CONDITION EXISTS TO CLOSE AN ELECTRICAL CIRCUIT HAVING A WARNING LIGHT.
Inventors
- 👤 Kennard E Robinson
- 👤 Clifford J Schott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:26
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/02; B60C23/04; B60C23/0408; B60C23/0422; B60C23/0467
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |