Brakes – Internal-resistance motion retarder – Having a thrust member with a variable volume chamber
Patent
1981-08-04
1988-05-17
Halvosa, George E. A.
Brakes
Internal-resistance motion retarder
Having a thrust member with a variable volume chamber
91443, 137523, 13754315, 18832214, 267221, F16F 934, F16F 944
Patent
active
047444444
ABSTRACT:
An automotive vehicle shock absorber of the type having an alternately compressible and extendible body adapted to coaxial mounting of an oppositely reactive compression spring. The shock absorber comprises a piston rod, a piston carried thereby and an hydraulic fluid containing cylinder, the piston dividing the cylinder into compression and extension chambers for alternately receiving hydraulic fluid. Response characteristics in the compression and extension modes are widely and independently variable. Structure beyond the hydraulic fluid containing cylinder defines first and second passageways communicating by adjustable valving to chambers in the cylinder in differential compression and extension response. The adjustable valving for the extension stroke of the piston is independent of the valving for the compression stroke of the piston and vice versa so that the response characteristics of the shock absorber in the extension stroke are independent of the response characteristics in the compression mode and vice versa. A first member is adjustable from an external position to control the rate of increase of the damping force of the fluid with increased velocities of the piston in the compression stroke of the piston. Second and third members are independently adjustable from external positions to control the response characteristics of the damping force of the fluid with increased velocities of the piston in the extension stroke.
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patent: 3960251 (1976-06-01), Johannes
Gillingham Craig L.
Halvosa George E. A.
Roston Ellsworth R.
Schwartz Charles H.
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