Vibration damper with variable damping force

Details Vibration damper with variable damping force Vibration damper with variable damping force

1987-01-27

1987-11-17

Halvosa, George E. A.

Brakes

Internal-resistance motion retarder

Controlled by an operator remote from retarder

267 6415, 280707, F16F 946, F16F 914, B60G 1126

Patent

active

047067870

ABSTRACT:
A vibration damper for vehicles is disclosed with a variable damping force. The vibration damper includes two series-connected damping valve systems which effect a damping force variation by means of a blockable bypass passage. An externally influenceable damping force in at least three stages is obtained in that the bypass passage bridges the two series-connected damping valve systems. This bypass passage has outer passages which open into the chambers separated by the damping valve arrangement and a further intermediate passage which opens to a space between the damping valve systems. At least two passages are closable to change the damping of damping fluid displaced between said chambers.

REFERENCES:
patent: 2976961 (1961-03-01), Mead
patent: 4159106 (1979-06-01), Nyman

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