Shock absorber

Details Shock absorber Shock absorber

1994-04-25

1999-02-23

Poon, Peter M.

Brakes

Internal-resistance motion retarder

Resistance alters relative to direction of thrust member

1882991, 188312, 280707, F16F 946

Patent

active

058734376

ABSTRACT:
A shock absorbing system wherein arrangements are provided for altering the hysteresis effects of the fluid utilized so as to obtain desired damping curves. Particularly, by employing different hysteresis effects it is possible to obtain larger damping forces at the end of the piston stroke. The hysteresis effect can be altered by changing the effective area of the shock absorber piston by controlling the flow paths between the piston chambers and an accumulator chamber and the pressures necessary to open these flow paths. In addition, by employing selectively openable variable volume chambers and variable pressure accumulator chambers, further changes in the hysteresis effect can be accomplished.

REFERENCES:
patent: 4655440 (1987-04-01), Eckert
patent: 4722548 (1988-02-01), Hamilton et al.
patent: 4821849 (1989-04-01), Miller
patent: 4936423 (1990-06-01), Karnopp
patent: 4986393 (1991-01-01), Preukschat et al.
patent: 5383680 (1995-01-01), Bock et al.

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