US3074709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air suspension systems for vehicles
Assignee: Wabco Automotive UK Ltd
•
Filing: 1960-08-29
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Granted: 1963-01-22
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Expires: 1980-08-29
Abstract
No abstract record available.
Inventors
- 👤 Donald H Ballard
- 👤 Albert E Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:14
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/02; B60G17/04; B60G17/052; B60G11/00; B60G11/26; B60G11/27; B60G17/005; B60G17/048; F; F16; F16F; F16F9/00; F16F9/02; F16F9/04; F16F9/05; B60G2202/00; B60G2202/10; B60G2202/15; B60G2202/152; B60G2202/40; B60G2202/41; B60G2202/413; B60G2204/00; B60G2204/40; B60G2204/45; B60G2204/46; Y; Y10; Y10S; Y10S267/00; Y10S267/01; Y10S280/00; Y10S280/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN COMBINATION WITH AN AIR SPRING DEVICE IN A VEHICLE SUSPENSION OPERATIVELY CONNECTED BETWEEN THE CHASSIS AND AN UNSPRUNG PART OF THE VEHICLE, MEANS DEFINING PASSAGES FOR THE INLET AND EXHAUST OF AIR TO AND FROM THE INTERIOR OF SAID SPRING DEVICE, INLET AND EXHAUST VALVES FOR THE RESPECTIVE PASSAGES, AN EXTENSIBLE AND RETRACTIBLE PROBE WITHIN SAID SPRING DEVICE, SAID PROBE IN EXTENDED CONDITION BEING CONDITIONED TO BE DISPLACED IN RESPONSE TO VARIATIONS IN LOAD ON THE CHASSIS, MEANS OPERATIVELY CONNECTING SAID PROBE TO CONTROL SAID VALVES TO ADMIT OR EXHAUST AIR FROM THE INTERIOR OF SAID AIR SPRING IN ACCORD
Claim 2
Dependent Claim
101 words
IN COMBINATION WITH AN AIR SPRING DEVICE IN A VEHICLE SUSPENSION OPERATIVELY CONNECTED BETWEEN THE CHASSIS AND AN UNSPRUNG PART OF THE VEHICLE, MEANS DEFINING PASSAGES FOR THE INLET AND EXHAUST OF AIR TO AND FROM THE INTERIOR OF SAID SPRING DEVICE, INLET AND EXHAUST VALVES FOR THE RESPECTIVE PASSAGES, AN EXTENSIBLE AND RETRACTIBLE PROBE WITHIN SAID SPRING DEVICE, SAID PROBE IN EXTENDED CONDITION BEING CONDITIONED TO BE DISPLACED IN RESPONSE TO VARIATIONS IN LOAD ON THE CHASSIS, MEANS OPERATIVELY CONNECTING SAID PROBE TO CONTROL SAID VALVES TO ADMIT OR EXHAUST AIR FROM THE INTERIOR OF SAID AIR SPRING IN ACCORD
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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |