US3085796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydropneumatic suspension and damping device for vehicles
Assignee: Volvo AB
•
Filing: 1960-05-09
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Granted: 1963-04-16
•
Expires: 1980-05-09
Abstract
No abstract record available.
Inventors
- 👤 Fritz A Wettstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:01
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/02; F15B1/04; F15B1/08; F15B1/10; F15B1/12; B; B60; B60G; B60G15/00; B60G15/08; B60G15/12; F16; F16F; F16F9/00; F16F9/06; F16F9/08; F16F9/096; F15B2201/00; F15B2201/20; F15B2201/205; F15B2201/30; F15B2201/315; F15B2201/3151; F15B2201/40; F15B2201/41; F15B2201/411; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771; Y10T137/778
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A HYDROPNEUMATIC SUSPENSION AND DAMPING DEVICE FOR A VEHICLE HAVING A SPRUNG PART AND AN UNSPRUNG PART, COMPRISING A HYDRAULIC SERVO ELEMENT PROVIDED BETWEEN THE SPRUNG PART AND THE UNSPRUNG PART OF THE VEHICLE, SAID ELEMENT COMMUNICATING THROUGH A CONDUIT WITH A LIQUID SPACE IN A PRESSURE CONTAINER WHICH IS FILLED PARTLY WITH A LIQUID AND PARTLY WITH A COMPRESSED GAS, SAID CONDUIT COMPRISING A RESTRICTION AND A RESILIENT DISPLACEMENT DEVICE ARRANGED IN PARALLEL, WITH REGARD TO THE FLOW BETWEEN THE SERVO ELEMENT AND THE PRESSURE CONTAINER, WHEREIN THE RESILIENT DISPLACEMENT DEVICE COMPRISES A SPRING-LOADED PISTON HAVING DUCTS THEREIN AND MOVABLE IN A CYLINDER,
Claim 2
Dependent Claim
104 words
A HYDROPNEUMATIC SUSPENSION AND DAMPING DEVICE FOR A VEHICLE HAVING A SPRUNG PART AND AN UNSPRUNG PART, COMPRISING A HYDRAULIC SERVO ELEMENT PROVIDED BETWEEN THE SPRUNG PART AND THE UNSPRUNG PART OF THE VEHICLE, SAID ELEMENT COMMUNICATING THROUGH A CONDUIT WITH A LIQUID SPACE IN A PRESSURE CONTAINER WHICH IS FILLED PARTLY WITH A LIQUID AND PARTLY WITH A COMPRESSED GAS, SAID CONDUIT COMPRISING A RESTRICTION AND A RESILIENT DISPLACEMENT DEVICE ARRANGED IN PARALLEL, WITH REGARD TO THE FLOW BETWEEN THE SERVO ELEMENT AND THE PRESSURE CONTAINER, WHEREIN THE RESILIENT DISPLACEMENT DEVICE COMPRISES A SPRING-LOADED PISTON HAVING DUCTS THEREIN AND MOVABLE IN A CYLINDER,
References Cited (Backward Citations)
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Cited
US2570362A
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US2756989A
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US2885202A
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US2812954A
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US2934332A
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US2923557A
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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) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |