US3331601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydro-pneumatic suspension devices
Assignee: Motors Liquidation Co
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Filing: 1965-06-28
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Granted: 1967-07-18
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Expires: 1985-06-28
Abstract
No abstract record available.
Inventors
- 👤 Riehl Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:23
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/06; F16F9/08; F16F9/092; B; B60; B60G; B60G17/00; B60G17/02; B60G17/04; B60G17/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
A HYDRO-PNEUMATIC SUSPENSION DEVICE COMPRISING AN OPERATING CYLINDER, A DAMPER TUBE DISPOSED COAXIALLY WITHIN THE OPERATING CYLINDER, A DAMPER PISTON SLIDABLY RECEIVED WITHIN THE DAMPER TUBE, A DAMPER ROD HAVING ONE END CONNECTED TO THE DAMPER PISTON AND THE OTHER END PROJECTING FROM THE OPERATING CYLINDER, AN OPERATINGFLUID SPACE BETWEEN THE OPERATING CYLINDER AND THE DAMPER TUBE, AN OPERATING PNEUMATIC SPRING ARRANGED TO PROVIDE A CONTROLLED HYDRAULIC PRESSURE IN THE OPERATING-FLUID SPACE, A FLUID CONNECTION BETWEEN THE OPERATING-FLUID SPACE AND A SPACE WITHIN THE DAMPER TUBE ON AXIAL SIDE OF THE DAMPER PISTON REMOTE FROM THE DAMPER ROD, A CONTROLFLUID SPACE BETWEEN THE OPERATING CYLINDER AND THE DAMPER TUBE, A CONTROL PNEUMATIC SPRING ARRANGED TO PROVIDE A CONTROLLED HYDRAULIC PRESSURE IN THE CONTROL-FLUID SPACE, AN INFLOW ONE-WAY VALVE CONNECTED BETWEEN THE CONTROLFLUID SPACE AND A SPACE WITHIN THE DAMPER TUBE SURROUNDING THE DAMPER ROD, AND OUTFLOW CONTROL VALVE CONNECTED BETWEEN THE CONTROL-FLUID SPACE AND THE SPACE WITHIN THE DAMPER TUBE SURROUNDING THE DAMPER ROD, AND AN OUTFLOW VALVE CONTROL DEVICE RESPONSIVE TO THE AXIAL POSITION OF THE DAMPER ROD.
Claim 2
Dependent Claim
179 words
A HYDRO-PNEUMATIC SUSPENSION DEVICE COMPRISING AN OPERATING CYLINDER, A DAMPER TUBE DISPOSED COAXIALLY WITHIN THE OPERATING CYLINDER, A DAMPER PISTON SLIDABLY RECEIVED WITHIN THE DAMPER TUBE, A DAMPER ROD HAVING ONE END CONNECTED TO THE DAMPER PISTON AND THE OTHER END PROJECTING FROM THE OPERATING CYLINDER, AN OPERATINGFLUID SPACE BETWEEN THE OPERATING CYLINDER AND THE DAMPER TUBE, AN OPERATING PNEUMATIC SPRING ARRANGED TO PROVIDE A CONTROLLED HYDRAULIC PRESSURE IN THE OPERATING-FLUID SPACE, A FLUID CONNECTION BETWEEN THE OPERATING-FLUID SPACE AND A SPACE WITHIN THE DAMPER TUBE ON AXIAL SIDE OF THE DAMPER PISTON REMOTE FROM THE DAMPER ROD, A CONTROLFLUID SPACE BETWEEN THE OPERATING CYLINDER AND THE DAMPER TUBE, A CONTROL PNEUMATIC SPRING ARRANGED TO PROVIDE A CONTROLLED HYDRAULIC PRESSURE IN THE CONTROL-FLUID SPACE, AN INFLOW ONE-WAY VALVE CONNECTED BETWEEN THE CONTROLFLUID SPACE AND A SPACE WITHIN THE DAMPER TUBE SURROUNDING THE DAMPER ROD, AND OUTFLOW CONTROL VALVE CONNECTED BETWEEN THE CONTROL-FLUID SPACE AND THE SPACE WITHIN THE DAMPER TUBE SURROUNDING THE DAMPER ROD, AND AN OUTFLOW VALVE CONTROL DEVICE RESPONSIVE TO THE AXIAL POSITION OF THE DAMPER ROD.
References Cited (Backward Citations)
US3094317A
Cited
US3110485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |