Brakes – Internal-resistance motion retarder – Thrust member or piston structure
Patent
1991-07-18
1992-09-22
Butler, Douglas C.
Brakes
Internal-resistance motion retarder
Thrust member or piston structure
18832215, 188320, 188282, F16F 934
Patent
active
051488973
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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Butler Douglas C.
Monroe Auto Equipment Company
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