US3099461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension control valve
Assignee: Weatherhead Co
•
Filing: 1957-07-26
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Granted: 1963-07-30
•
Expires: 1977-07-26
Abstract
No abstract record available.
Inventors
- 👤 James S Stelzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:45
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/02; B60G17/04; B60G17/052; B60G17/0523; B60G17/0525; B60G2500/00; B60G2500/20; B60G2500/202; B60G2500/2022; Y; Y10; Y10S; Y10S280/00; Y10S280/01; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86919; Y10T137/87169; Y10T137/87233
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
IN A SUSPENSION SYSTEM FOR SUPPORTING A VEHICLE FRAME IN A PREDETERMINED POSITION RELATIVE TO A VEHICLE AXLE COMPRISING AN AIR SPRING DISPOSED BETWEEN SAID FRAME AND AXLE, A SOURCE OF AIR SPRING DISPOSED BETWEEN SAID FRAME VALVE APPARATUS MOUNTED ON SAID FRAME, SAID APPARATUS INCLUDING A FIRST VALVE HAVING A POPPET ACTUABLE TO PROVIDE COMMUNICATION BETWEEN SAID AIR SOURCE AND AIR SPRING, A SECOND VALVE HAVING A POPPET ACTUABLE TO PORVIDE COMMUNICATION BETWEEN SAID AIR SPRING AND AMBIENT SPACE, CAM MEANS BEING PIVOTAL IN ONE AXIAL POSITION FOR SELECTIVELY ACTUATING SAID POPPETS, A SPRING BEARING AGAINST SAID CAM MEANS AND URGING THE SAME AWAY FROM SAID POPPETS, A MOVABLE CYLINDER BEARING AGAINST SAID CAM MEANS, A FIXED PISTON WITHIN SAID CYLINDER AND AN EXPANSION CHAMBER BETWEEN SPACED PORTIONS OF SAID CYLINDER AND PISTON, MEANS PROVIDING COMMUNICATION BETWEEN SAID EXPANSION CHAMBER AND SAID AIR SOURCE, SAID CYLINDER AND CAM MEANS BEING MOVABLE IN RESPONSE TO AIR PRESSURE IN SAID EXPANSION CHAMBER TO FACILITATE ENGAGEMENT BETWEEN SAID POP-
Claim 2
Dependent Claim
167 words
IN A SUSPENSION SYSTEM FOR SUPPORTING A VEHICLE FRAME IN A PREDETERMINED POSITION RELATIVE TO A VEHICLE AXLE COMPRISING AN AIR SPRING DISPOSED BETWEEN SAID FRAME AND AXLE, A SOURCE OF AIR SPRING DISPOSED BETWEEN SAID FRAME VALVE APPARATUS MOUNTED ON SAID FRAME, SAID APPARATUS INCLUDING A FIRST VALVE HAVING A POPPET ACTUABLE TO PROVIDE COMMUNICATION BETWEEN SAID AIR SOURCE AND AIR SPRING, A SECOND VALVE HAVING A POPPET ACTUABLE TO PORVIDE COMMUNICATION BETWEEN SAID AIR SPRING AND AMBIENT SPACE, CAM MEANS BEING PIVOTAL IN ONE AXIAL POSITION FOR SELECTIVELY ACTUATING SAID POPPETS, A SPRING BEARING AGAINST SAID CAM MEANS AND URGING THE SAME AWAY FROM SAID POPPETS, A MOVABLE CYLINDER BEARING AGAINST SAID CAM MEANS, A FIXED PISTON WITHIN SAID CYLINDER AND AN EXPANSION CHAMBER BETWEEN SPACED PORTIONS OF SAID CYLINDER AND PISTON, MEANS PROVIDING COMMUNICATION BETWEEN SAID EXPANSION CHAMBER AND SAID AIR SOURCE, SAID CYLINDER AND CAM MEANS BEING MOVABLE IN RESPONSE TO AIR PRESSURE IN SAID EXPANSION CHAMBER TO FACILITATE ENGAGEMENT BETWEEN SAID POP-
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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) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |