US3917244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load-bearing compression leg
Assignee: Individual
•
Filing: 1974-08-01
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Granted: 1975-11-04
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Expires: 1994-08-01
Abstract
Abstract A load-bearing compression leg includes a spring and a hydraulic vibration damper which is fitted in the direction of operation of the spring and has a cylinder in which a damping piston fixed to a piston rod can move, and in which there is an equalisation space for the damping fluid displaced by the piston rod. A displaceable sealing separating piston separates the equalisation space from a further space in which is received a further vibration damper. The further vibration damper is of smaller dimensions than the first mentioned vibration damper and at one end engages the surface of the separating piston remote from the equalisation space, the other end of the further vibration damper being secured to the base of the cylinder of the first mentioned vibration damper. The stroke of the further vibration damper corresponds to that of the separating piston and the further vibration damper includes an equalisation space which, in use, receives pressurised gas.
Inventors
- 👤 Carl Ullrich Peddinghaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:19
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/06; B; B60; B60G; B60G15/00; B60G15/02; B60G15/06; B60G15/07; F16F9/10; F16F9/14; F16F9/16; F16F9/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
181 words
A load-bearing compression leg, including a spring, a hydraulic first vibration damper which is fitted in the direction of operation of the spring and has a cylinder in which a damping piston fixed to a piston rod can move and in which there is an equalisation space for the damping fluid displaced by the piston rod, a displaceable sealing separating piston separating said equalisation space from a further space in which is received a hydro-pneumatic vibration damper, said hydro-pneumatic vibration damper being of smaller dimension than the first vibration damper and having a piston rod of smaller diameter than said piston rod of said first vibration damper, and said hydro-pneumatic vibration damper at one end engaging the surface of said separating piston remote from the equalisation space, the other end of said hydro-pneumatic vibration damper being secured to the base of the cylinder of the first vibration damper, the stroke of said hydro-pneumatic vibration damper being of the same length as that of the separating piston, and said hydro-pneumatic vibration damper including an equalisation space which, in use, receives pressurised gas.
Claim 2
Dependent Claim
181 words
A load-bearing compression leg, including a spring, a hydraulic first vibration damper which is fitted in the direction of operation of the spring and has a cylinder in which a damping piston fixed to a piston rod can move and in which there is an equalisation space for the damping fluid displaced by the piston rod, a displaceable sealing separating piston separating said equalisation space from a further space in which is received a hydro-pneumatic vibration damper, said hydro-pneumatic vibration damper being of smaller dimension than the first vibration damper and having a piston rod of smaller diameter than said piston rod of said first vibration damper, and said hydro-pneumatic vibration damper at one end engaging the surface of said separating piston remote from the equalisation space, the other end of said hydro-pneumatic vibration damper being secured to the base of the cylinder of the first vibration damper, the stroke of said hydro-pneumatic vibration damper being of the same length as that of the separating piston, and said hydro-pneumatic vibration damper including an equalisation space which, in use, receives pressurised gas.
Claim 3
Dependent Claim
27 words
A load-bearing compression leg as claimed in claim 1, wherein the cylinder of the first vibration damper carries a steering knuckle pin for receiving a vehicle wheel.
Claim 4
Dependent Claim
48 words
A load-bearing compression leg as claimed in claim 1, wherein the hydro-pneumatic vibration chamber includes a cylinder which is firmly connected at a closed base thereof to the separating piston, and further includes a piston which extends from the end of the cylinder remote from said closed base.
Claim 5
Dependent Claim
29 words
A load-bearing compression leg as claimed in claim 1, wherein the hydro-pneumatic vibration damper includes a damping piston having openings through which fluid can flow freely in both directions.
Claim 6
Dependent Claim
28 words
A load-bearing compression leg as claimed in claim 1, wherein the cylinder of the first vibration damper has one or more ventilation openings communicating with said further space.
References Cited (Backward Citations)
US3603574A
Cited
US3817506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |