US3197231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid suspension leveling control system
Assignee: Dana Inc
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Filing: 1962-04-19
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Granted: 1965-07-27
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Expires: 1982-04-19
Abstract
No abstract record available.
Inventors
- 👤 James W Holzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:14
CPC Classifications
B; B60; B60G; B60G5/00; B60G5/04; B60G17/00; B60G17/02; B60G17/033; Y; Y10; Y10S; Y10S280/00; Y10S280/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
THE COMBINATION WITH A VEHICLE HAVING A FRAME SUPERIMPOSED ON A PAIR OF TANDEM AXLES AND FLUID FILLED APRING MEANS DISPOSED BETWEEN THE OUTER ENDS OF EACH AXLE AND SAID FRAME, OF A FIRST AND A SECOND MANIFOLD CONFLUENT WITH SAID FLUID FILLED SPRING MEANS ON ONE AND THE OTHER SIDE OF THE VEHICLE RESPECTIVELY, AND A FIRST AND A SECOND CONTROL VALVE OPERATIVELY ASSOCIATED WITH SAID FIRST AND SECOND MANIFOLD RESPECTIVELY ASSOCIATED WITH SAID PRESSURE CONFLUENT WITH SAID CONTROL VALVES, SAID CONTROL VALVES BEING ADAPTED IN A FIRST POSITION TO JOIN THEIR RESPECTIVE MANIFOLD INA CONFLUENT RELATIONSHIP WITH THE ATMOSPHERE AND IN A SECOND POSITION TO JOIN THEIR RESPECTIVE MANIFOLD IN A CONFLUENT RELATIONSHIP WITH SAID SOURCE OF FLUID PRESSURE AND IN A THIRD POSITION TO CLOSE THEIR RESPECTIVE MANIFOLD, AND A FIRST AND A SECOND MEANS FOR ENERGIZING MANIFOLD, AND A FIRST AND A SECOND MEAND FOR SAID FIRST AND SECOND MEANS BEING OPERATIVE RESPECTIVELY IN RESPONSE TO THE AVERAGE OF THE MOVEMENT OF THE AXLES ON THE ONE AND ON THE OTHER SIDE OF THE VEHICLE RELATIVE TO THE FRAME.
Claim 2
Dependent Claim
183 words
THE COMBINATION WITH A VEHICLE HAVING A FRAME SUPERIMPOSED ON A PAIR OF TANDEM AXLES AND FLUID FILLED APRING MEANS DISPOSED BETWEEN THE OUTER ENDS OF EACH AXLE AND SAID FRAME, OF A FIRST AND A SECOND MANIFOLD CONFLUENT WITH SAID FLUID FILLED SPRING MEANS ON ONE AND THE OTHER SIDE OF THE VEHICLE RESPECTIVELY, AND A FIRST AND A SECOND CONTROL VALVE OPERATIVELY ASSOCIATED WITH SAID FIRST AND SECOND MANIFOLD RESPECTIVELY ASSOCIATED WITH SAID PRESSURE CONFLUENT WITH SAID CONTROL VALVES, SAID CONTROL VALVES BEING ADAPTED IN A FIRST POSITION TO JOIN THEIR RESPECTIVE MANIFOLD INA CONFLUENT RELATIONSHIP WITH THE ATMOSPHERE AND IN A SECOND POSITION TO JOIN THEIR RESPECTIVE MANIFOLD IN A CONFLUENT RELATIONSHIP WITH SAID SOURCE OF FLUID PRESSURE AND IN A THIRD POSITION TO CLOSE THEIR RESPECTIVE MANIFOLD, AND A FIRST AND A SECOND MEANS FOR ENERGIZING MANIFOLD, AND A FIRST AND A SECOND MEAND FOR SAID FIRST AND SECOND MEANS BEING OPERATIVE RESPECTIVELY IN RESPONSE TO THE AVERAGE OF THE MOVEMENT OF THE AXLES ON THE ONE AND ON THE OTHER SIDE OF THE VEHICLE RELATIVE TO THE FRAME.
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |