US3121573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for exhausting the air springs of vehicle pneumatic mechanical suspension systems to the outer atmosphere
Assignee: Industrie Magneti Marelli SRL
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Filing: 1961-05-12
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Granted: 1964-02-18
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Expires: 1981-05-12
Abstract
No abstract record available.
Inventors
- 👤 Alfieri Giuseppe
- 👤 Moriondo Roberto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:59
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/015; B60G17/0152; B60G17/0155; B60G17/02; B60G17/04; B60G17/052; B60G17/0523; Y; Y10; Y10S; Y10S280/00; Y10S280/01; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7762
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PNEUMATIC-MECHANICAL VEHICLE SUSPENSION SYSTEM OF THE CHARACTER DESCRIBED COMPRISING PNEUMATIC-MECHANICAL SPRING MEANS MOUNTED BETWEEN A VEHICLE AXLE AND FRAME, A SOURCE OF AIR PRESSURE CONNECTED TO THE PNEUMATIC SPRING MEANS, EXHAUST VALVE MEANS OPERATIVELY CONNECTED TO THE PNEUMATIC SPRING MEANS FOR MAINTAINING THE PNEUMATIC SPRING MEANS OPEN TO ATMOSPHERE WHEN THE VEHICLE IS UNLOADED AND UNDERWAY, THE SOURCE OF AIR BEING CONNECTED TO THE EXHAUST VALVE MEANS FOR PNEUMATICALLY ACTUATING THE EXHAUST VALVE MEANS, AN ELECTRODISTRIBUTOR INTERPOSED BETWEEN THE AIR SOURCE AND THE EXHAUST VALVE MEANS FOR CONTROLLING THE FLOW OF AIR FROM THE AIR SOURCE TO THE EXHAUST VALVE MEANS, AND SWITCH MEANS OPERATIVELY CONNECTED TO THE EXHAUST VALVE MEANS AND THE ELECTRODISTRIBUTOR, WHEREBY COMPRESSED AIR FLOW FROM THE AIR SOURCE THROUGH THE ELECTRODISTRIBUTOR TO THE EXHAUST VALVE MEANS.
Claim 2
Dependent Claim
131 words
A PNEUMATIC-MECHANICAL VEHICLE SUSPENSION SYSTEM OF THE CHARACTER DESCRIBED COMPRISING PNEUMATIC-MECHANICAL SPRING MEANS MOUNTED BETWEEN A VEHICLE AXLE AND FRAME, A SOURCE OF AIR PRESSURE CONNECTED TO THE PNEUMATIC SPRING MEANS, EXHAUST VALVE MEANS OPERATIVELY CONNECTED TO THE PNEUMATIC SPRING MEANS FOR MAINTAINING THE PNEUMATIC SPRING MEANS OPEN TO ATMOSPHERE WHEN THE VEHICLE IS UNLOADED AND UNDERWAY, THE SOURCE OF AIR BEING CONNECTED TO THE EXHAUST VALVE MEANS FOR PNEUMATICALLY ACTUATING THE EXHAUST VALVE MEANS, AN ELECTRODISTRIBUTOR INTERPOSED BETWEEN THE AIR SOURCE AND THE EXHAUST VALVE MEANS FOR CONTROLLING THE FLOW OF AIR FROM THE AIR SOURCE TO THE EXHAUST VALVE MEANS, AND SWITCH MEANS OPERATIVELY CONNECTED TO THE EXHAUST VALVE MEANS AND THE ELECTRODISTRIBUTOR, WHEREBY COMPRESSED AIR FLOW FROM THE AIR SOURCE THROUGH THE ELECTRODISTRIBUTOR TO THE EXHAUST VALVE MEANS.
References Cited (Backward Citations)
US2257913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |