US3094341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic suspension device
Assignee: Industrie Magneti Marelli SRL
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Filing: 1960-07-22
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Granted: 1963-06-18
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Expires: 1980-07-22
Abstract
No abstract record available.
Inventors
- 👤 Alfieri Giuseppe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:46
CPC Classifications
B; B62; B62D; B62D61/00; B62D61/12; B62D61/125; B60; B60G; B60G17/00; B60G17/02; B60G17/033; B60G17/04; B60G17/052; B60G17/0523; B60G17/0526; B60G2300/00; B60G2300/02; B60G2300/026; B60G2300/0262; B60G2300/40; Y; Y10; Y10S; Y10S280/00; Y10S280/01; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86919; Y10T137/87169; Y10T137/87233; Y10T137/87241
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
A PNEUMATIC SUSPENSION DEVICE FOR VEHICLES HAVING AT LEAST ONE PRINCIPAL AXLE, SAID AXLE HAVING A FIXED SPRING RATE, A CHASSIS SUPPORTED BY SAID PRINCIPAL AXLE, AN AUXILIARY AXLE HAVING A BELLOWS MOUNTED BETWEEN AND IN CONTACT WITH SAID AUXILIARY AXLE AND SAID CHASSIS, A COMPRESSED AIR DISTRIBUTOR SECURED TO SAID CHASSIS, A CHAMBER IN SAID DISTRIBUTOR, A CONNECTION FROM A SOURCE OF COMPRESSED AIR TO SAID CHAMBER, A CONNECTION FROM SAID BELLOWS TO SAID CHAMBER, A VALVE AND SEAT IN SAID CHAMBER BETWEEN SAID CONNECTIONS, MEANS FOR SEATING SAID VALVE, A SLIDABLE PUSH ROD IN SAID CHAMBER, MEANS FOR BIASING SAID PUSH ROD TOWARD SAID VALVE AND SEAT, CONTROL LINKAGE MOUNTED ON SAID PRINCIPAL AXLE AND OPERATIVELY CONNECTED TO SAID BIASING MEANS FOR MOVING SAID PUSH ROD TO UNSEAT SAID VALVE WHEN SAID CHASSIS IS LOWERED RELATIVE TO SAID PRINCIPAL AXLE, A VENT IN SAID CHAMBER ADAPTED TO COMMUNICATE WITH SAID BELLOWS WHEN SAID VALVE IS SEATED AND SAID PUSH ROD IS RETRACTED BY PRESSURE OF AIR FROM SAID BELLOWS.
Claim 2
Dependent Claim
171 words
A PNEUMATIC SUSPENSION DEVICE FOR VEHICLES HAVING AT LEAST ONE PRINCIPAL AXLE, SAID AXLE HAVING A FIXED SPRING RATE, A CHASSIS SUPPORTED BY SAID PRINCIPAL AXLE, AN AUXILIARY AXLE HAVING A BELLOWS MOUNTED BETWEEN AND IN CONTACT WITH SAID AUXILIARY AXLE AND SAID CHASSIS, A COMPRESSED AIR DISTRIBUTOR SECURED TO SAID CHASSIS, A CHAMBER IN SAID DISTRIBUTOR, A CONNECTION FROM A SOURCE OF COMPRESSED AIR TO SAID CHAMBER, A CONNECTION FROM SAID BELLOWS TO SAID CHAMBER, A VALVE AND SEAT IN SAID CHAMBER BETWEEN SAID CONNECTIONS, MEANS FOR SEATING SAID VALVE, A SLIDABLE PUSH ROD IN SAID CHAMBER, MEANS FOR BIASING SAID PUSH ROD TOWARD SAID VALVE AND SEAT, CONTROL LINKAGE MOUNTED ON SAID PRINCIPAL AXLE AND OPERATIVELY CONNECTED TO SAID BIASING MEANS FOR MOVING SAID PUSH ROD TO UNSEAT SAID VALVE WHEN SAID CHASSIS IS LOWERED RELATIVE TO SAID PRINCIPAL AXLE, A VENT IN SAID CHAMBER ADAPTED TO COMMUNICATE WITH SAID BELLOWS WHEN SAID VALVE IS SEATED AND SAID PUSH ROD IS RETRACTED BY PRESSURE OF AIR FROM SAID BELLOWS.
References Cited (Backward Citations)
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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) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |