Piston valving for shock absorbers
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United States of America Patent
Stats
-
Sep 22, 1992
Grant Date -
N/A
app pub date -
Jul 18, 1991
filing date -
Jul 18, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pressure-operated valving arrangement for a piston assembly of the type used in a direct-acting shock absorber is disclosed. Bi-directional primary and secondary flow paths are provided for regulating the damping forces generated during both rebound and compression strokes. During rebound, a pressure differential generated across a moveable valve disc operates to regulate fluid flow from an upper to a lower portion of the shock absorber's working chamber. A pilot orifice in the valve disc and a bleed slot associated with a rebound blow-off assembly are sized to generate the desired pressure differential across the valve disc. Manipulation of the size ratio permits universality of design for economical shock absorber manufacture.
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