Monotube piston valving system with selective bleed

Details Monotube piston valving system with selective bleed Monotube piston valving system with selective bleed

2006-07-04

2006-07-04

Kramer, Devon (Department: 3683)

Brakes

Internal-resistance motion retarder

Valve structure or location

C188S322220, C188S282900

Reexamination Certificate

active

07070029

ABSTRACT:
A shock absorber piston assembly includes a piston having a first face, a second face and a plurality of fluid passages. Preloaded flow control devices each seal at least one of the fluid passages, including: a first bleed plate contacting the first face and a second bleed plate contacting the second face; and a pair of blow-off discs, with a first blow-off disc contacting the first face and a second blow-off disc contacting the second face. Each of the flow control devices opens at an individually adjustable device opening pressure. Each of the multiple passages in contact with the blow-off discs can also differ in flow area to permit the blow-off discs to angularly lift to limit disc chatter.

REFERENCES:
patent: 5123671 (1992-06-01), Driessen et al.
patent: 5234085 (1993-08-01), Schneider
patent: 6264015 (2001-07-01), De Kock
patent: 6371264 (2002-04-01), Deferme
patent: 6460664 (2002-10-01), Steed et al.
patent: 2001/0009214 (2001-07-01), Tanaka
patent: 6-185562 (1994-07-01), None

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