Hydropneumatic resilient strut or the like provided with level regulating means located within the cylinder housing
Abstract
Abstract A HYDROPNEUMATIC RESILIENT STRUT OR THE LIKE ADAPTED FOR ARRANGEMENT BETWEEN A WHEEL SUPPORTING MEANS AND A VEHICLE BODY IN WHICH THE CYLINDER HOUSING IS PROVIDED WITH A LEVEL REGULATING MEANS SO CONSTRUCTED AND DEPENDENT UPON THE RELATIVE POSITION OF THE PISTON ROD IN THE CYLINDER TO ESTABLISH IN A FIRST REGULATING POSITION A FLUID FLOW BETWEEN A PRESSURE LINE LEADING TO THE PISTON SPACE AND IN A SECOND REGULATING POSITION A FLOW IN A LINE PROVIDED BETWEEN THE PISTON SPACE AND A DRAIN LINE. IN A THIRD REGULATING POSITION, NAMELY, A NEUTRAL POSITION, THE FLUID FLOWS ARE BLOCKED AND A CONTINUOUSLY OPERATIVE SPRING MEANS FUNCTIONS TO MOVE THE CONTROL PISTON TO THE LEVEL REGULATING MEANS INTO A POSITION CORRESPONDING TO THE FIRST REGULATING POSITION WHILE AN EXTENSION SPRING MEANS OPERATIVE ONLY WITHIN A CERTAIN STROKE RANGE RELATED TO THE PISTON OR PISTON ROD SERVES TO MOVE THE CONTROL PISTON INTO THE SECOND REGULATING POSITION IN OPPOSITION TO THE FORCE OF THE SPRING MEANS.
Inventors
- 👤 Gunter Strauff
Bibliographic Details
Claims Analysis
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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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |