Brakes – Internal-resistance motion retarder – Resistance alters relative to direction of thrust member
Patent
1981-07-07
1983-10-04
Butler, Douglas C.
Brakes
Internal-resistance motion retarder
Resistance alters relative to direction of thrust member
18832211, 188315, F16F 950
Patent
active
044073968
ABSTRACT:
A shock absorber has a cylinder, a piston dividing the cylinder into two chambers, and a valve in the piston which opens to permit hydraulic fluid to flow through the piston when the compression rate of the shock absorber exceeds a limit value. The valve is moved to its open position by the pressure of hydraulic fluid in the chamber in the path of piston movement, and it is biased toward its closed position by a spring on the piston, a constant pressure gas in a reference chamber on the piston and the pressure of hydraulic fluid in the chamber behind the path of piston movement. Fluid from the contracting chamber is released by a check valve into a storage space.
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Butler Douglas C.
Oberleitner Robert
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