Patent US3651902A successfully refreshed from Google Patents.
US3651902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydropneumatic shock absorber
Assignee: Individual
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Filing: 1969-12-15
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Granted: 1972-03-28
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Expires: 1989-12-15
Abstract
Abstract A hydropneumatic shock absorber having a working cylinder, a piston and a compensating chamber at one end of the working cylinder. The working cylinder and the compensating chamber are interconnected by a pair of pipes arranged so that the two pipe ends forming one pair of pipe ends are disposed at diametrically opposite positions. The diametrically opposite pipe ends communicate with the working cylinder and there is also provided an attachment member for use in mounting the shock absorber in its operative position in such a way that when the shock absorber is installed in a non-vertical orientation the diametrically opposite pipe ends can be arranged so that one of them is at the highest part of the working cylinder.
Inventors
- 👤 Carl Ullrich Peddinghaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:55
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/06; F16F9/066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A hydropneumatic shock absorber comprising a working cylinder which contains a damping fluid, a damping piston displaceable therein, a compensating chamber adjoining one end of said working cylinder, a pair of spaced discs which extend in planes at right angles to the longitudinal axis of the hydropneumatic shock absorber and which separate said compensating chamber from said working cylinder, and an attachment member comprising an eye, wherein said damping piston is provided with valve openings, and a piston rod which projects outwardly from the other end of said working cylinder and wherein there is further provided only two connecting pipes between said working cylinder and said compensating chamber through which damping fluid can flow in both directions, one pair of ends of said connecting pipes opening out into said working cylinder and being disposed respectively at the ends of a diameter of said working cylinder which extends at right angles to the axis of said eye, said connecting pipes being constructed as spiral pipes defined by webs which extend between said discs.
Claim 2
Dependent Claim
172 words
A hydropneumatic shock absorber comprising a working cylinder which contains a damping fluid, a damping piston displaceable therein, a compensating chamber adjoining one end of said working cylinder, a pair of spaced discs which extend in planes at right angles to the longitudinal axis of the hydropneumatic shock absorber and which separate said compensating chamber from said working cylinder, and an attachment member comprising an eye, wherein said damping piston is provided with valve openings, and a piston rod which projects outwardly from the other end of said working cylinder and wherein there is further provided only two connecting pipes between said working cylinder and said compensating chamber through which damping fluid can flow in both directions, one pair of ends of said connecting pipes opening out into said working cylinder and being disposed respectively at the ends of a diameter of said working cylinder which extends at right angles to the axis of said eye, said connecting pipes being constructed as spiral pipes defined by webs which extend between said discs.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |