Spring devices – Vehicle – Comprising compressible fluid
Patent
1996-12-19
1999-01-12
Graham, Matthew C.
Spring devices
Vehicle
Comprising compressible fluid
18832214, F16F 946
Patent
active
058576657
ABSTRACT:
Self-pumping hydropneumatic shock absorbing strut with internal level regulation, in particular for motor vehicles, with a work cylinder which is filled with oil, is under the pressure of at least one gas cushion which is located in at least one high pressure chamber and acts as a spring. The work cylinder is divided by a piston carried on a hollow piston rod into two work chambers, with a piston pump which is driven by the spring movements and transports oil from a low pressure chamber into the work chamber which is connected to the high pressure chamber. The pump cylinder of the piston pump is formed by the hollow piston rod. There are valves between the work chamber and the high pressure chamber for the decompression and compression damping, whereby as a valve, there is at least one valve plate, which interacts with a valve seat, which is located on the work cylinder.
REFERENCES:
patent: 3729784 (1973-05-01), Allinquant et al.
patent: 4469315 (1984-09-01), Nicholls et al.
patent: 4577840 (1986-03-01), Meller et al.
patent: 5464079 (1995-11-01), Lohberg et al.
patent: 5564680 (1996-10-01), Sand et al.
Fichtel & Sachs AG
Graham Matthew C.
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