Damping pilot valve having vibration damper-related characterist

Details Damping pilot valve having vibration damper-related characterist Damping pilot valve having vibration damper-related characterist

1993-08-04

1995-03-21

Butler, Douglas C.

Brakes

Internal-resistance motion retarder

Controlled by an operator remote from retarder

18832213, 188315, 188318, B60G 1708, F16F 950

Patent

active

053987870

ABSTRACT:
In the case of a vibration damper with a by-pass (32, 32a) between an annular working chamber and a compensating chamber (28), there is in the by-pass (32, 32a) a shut-off valve assembly (36) with a valve shut-off element (42) and a valve seat (40b). The valve shut-off element (42) is for its part subject to the pressure (p.sub.1) in a first section (32) of the by-pass and on the other to the pressure (p.sub.2) in a control chamber (48). The cross-section of a control chamber outlet (46c) can be controlled by an outlet cross-section dimensioning device (52). The shut-off valve assembly (36) is so constructed that at maximum control chamber outlet cross-section the valve shut-off element (42) begins to be lifted off the valve seat (40b) when the throughflow rate through the control chamber outlet (46c) amounts to at least 0.2 times the total throughflow rate through the shut-off valve assembly (36) which becomes adjusted to a damper velocity of 1 m/sec.

REFERENCES:
patent: 4650042 (1987-03-01), Knecht et al.
patent: 4802561 (1989-02-01), Knecht et al.
patent: 4850460 (1989-07-01), Knecht et al.
patent: 4880086 (1989-11-01), Knecht et al.
patent: 5163706 (1992-11-01), Maguran, Jr. et al.
patent: 5180039 (1993-01-01), Axthammer et al.

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