Spring devices – Vehicle – Parallel depression
Patent
1987-01-12
1988-06-21
Butler, Douglas C.
Spring devices
Vehicle
Parallel depression
188299, 188315, 18832214, 267 6416, 280 611, 280714, B60G 2106
Patent
active
047520620
ABSTRACT:
A suspension for a vehicle including two hydraulic shock absorbers interconnecting respective remote zones of the suspended part of the vehicle to respective non-suspended parts. Each shock absorber is of the twin tube type with a compensation chamber which communicates with a lower chamber of the cylinder by way of a communication duct formed in a valve-containing endpiece. Inside the duct there are arranged a compression valve which allows the shock absorber fluid to flow towards the compensation chamber during contraction of the shock absorber and between the compression valve and the compensation chamber. A shut-off valve which is normally open is operated in the closing direction by a pilot pressure. The upper chamber of each shock absorber is connected by a respective hydraulic tube to a chamber controlling the shut-off valve of the other shock absorber. The shut off valve closes when the pressure exceeds a predetermined threshold.
REFERENCES:
patent: 3090611 (1963-05-01), Schultze
patent: 3328019 (1967-06-01), Wilson
patent: 3736000 (1973-05-01), Capgras
patent: 4172588 (1979-10-01), Ganoung
patent: 4411447 (1983-10-01), Hart
patent: 4506751 (1985-03-01), Stephens
Butler Douglas C.
Face Standard
Raden James B.
Seitter Robert P.
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