Motors: expansible chamber type – Fluid supply through diverse paths to single expansible chamber – Position responsive
Patent
1975-04-16
1977-11-01
Maslousky, Paul E.
Motors: expansible chamber type
Fluid supply through diverse paths to single expansible chamber
Position responsive
91 31, 91408, 188285, 188287, F15B 1522
Patent
active
040560406
ABSTRACT:
A shock absorber of the kind having an infinitely adjustable damping characteristic comprises a cylinder containing a piston fixed to a piston rod which extends from the cylinder and liquid within the cylinder acting on the piston. The cylinder has openings for the flow from it of the liquid upon movement of the piston in the cylinder and means are provided for restricting these openings to provide the adjustment of the damping characteristic. The openings are situated in the peripheral wall of the cylinder and are axially spaced apart from each other in positions in which they are successively passed over and closed by the piston as the piston approaches the end of its stroke at one end of the cylinder in a damping movement. Thus the flow of liquid from the cylinder is progressively further throttled by closure of the openings as the piston approaches the end of its movement. Preferably the cylinder is provided with an inlet for the supply to it of liquid under pressure as well as the outlet openings through its peripheral wall so that the shock absorber has a power cylinder function as well as a shock absorber function. Both the power function and the shock absorber function may be either single-acting or double-acting.
REFERENCES:
patent: 2292336 (1942-08-01), Farnham
patent: 2443312 (1948-06-01), Gerger et al.
patent: 3043277 (1962-07-01), Carlson
patent: 3138066 (1964-06-01), Walker
patent: 3344894 (1967-10-01), Kenworthy
patent: 3731770 (1973-05-01), Bindon
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