US3814370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cushion supports for vehicle seats
Assignee: Individual
•
Filing: 1970-06-26
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Granted: 1974-06-04
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Expires: 1990-06-26
Abstract
Abstract An air-cushion support for vehicle seats comprises an air-filled chamber closed at its upper end by a flexible diaphragm and at its lower end by a rigid base member, a plunger resting on the flexible diaphragm and supporting the vehicle seat, and a spring urging the diaphragm and seat to their upper positions. The airfilled chamber is under normal atmospheric pressure during the unoccupied condition of the vehicle seat and includes a normally closed valve and an operator therefor to vent the chamber interior to the atmosphere when the diaphragm is in its upper non-deflected position.
Inventors
- 👤 A Hurwitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:52
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/50; B60N2/502; B60N2/02; B60N2/505; B60N2/506; B60N2/507; B60N2/52; B60N2/525; B60N2/54; B60N2/544
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
131 words
An air-cushion support for vehicle seats, comprising an air filled chamber closed at its upper end by a flexible diaphragm and at its lower end by a rigid base member, a plunger resting on said flexible diaphragm and supporting the vehicle seat, said air-filled chamber being under normal atmosheric pressure during the unoccupied condition of the vehicle seat, which pressure is increased by the deflection of said flexible diaphragm downwardly towards said rigid base member when the vehicle seat is occupied, and a spring urging said diaphragm and the seat to their upper positions and further including a normally closed valve in said air-filled chamber, and means for opening said valve to vent the interior of said chamber to the atmosphere when the flexible diaphragm is in its upper, nondeflected position.
Claim 2
Dependent Claim
131 words
An air-cushion support for vehicle seats, comprising an air filled chamber closed at its upper end by a flexible diaphragm and at its lower end by a rigid base member, a plunger resting on said flexible diaphragm and supporting the vehicle seat, said air-filled chamber being under normal atmosheric pressure during the unoccupied condition of the vehicle seat, which pressure is increased by the deflection of said flexible diaphragm downwardly towards said rigid base member when the vehicle seat is occupied, and a spring urging said diaphragm and the seat to their upper positions and further including a normally closed valve in said air-filled chamber, and means for opening said valve to vent the interior of said chamber to the atmosphere when the flexible diaphragm is in its upper, nondeflected position.
Claim 3
Dependent Claim
135 words
An air-cushion support for vehicle seats, comprising, an air-filled chamber closed at its upper end by a flexible diaphragm and at its lower end by a rigid base member, a plunger resting on said flexible diaphragm and supporting the vehicle seat, said air-filled chamber being under normal atmospheric pressure during the unoccupied condition of the vehicle seat, which pressure is increased by the deflection of said flexible diaphragm downwardly towards said rigid base member when the vehicle seat is occupied, and a spring urging said diaphragm and the seat to their upper positions and wherein said means for opening the valve comprising flexible wire connected to the valve and the flexible diaphragm such as to apply a pull to the valve to open same only when the flexible diaphragm is in its upper, non-deflected position.
Claim 4
Dependent Claim
135 words
An air-cushion support for vehicle seats, comprising, an air-filled chamber closed at its upper end by a flexible diaphragm and at its lower end by a rigid base member, a plunger resting on said flexible diaphragm and supporting the vehicle seat, said air-filled chamber being under normal atmospheric pressure during the unoccupied condition of the vehicle seat, which pressure is increased by the deflection of said flexible diaphragm downwardly towards said rigid base member when the vehicle seat is occupied, and a spring urging said diaphragm and the seat to their upper positions and wherein said means for opening the valve comprising flexible wire connected to the valve and the flexible diaphragm such as to apply a pull to the valve to open same only when the flexible diaphragm is in its upper, non-deflected position.
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) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |