Arrangement for adjusting the damping force of a shock absorber

Brakes – Internal-resistance motion retarder – Having a thrust member with a variable volume chamber

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188300, F16F 934

Patent

active

039373070

ABSTRACT:
An arrangement is provided for adjusting the damping force exhibited by a hydraulic shock absorber. Included is a valve near the piston including passages permitting the flow of fluid through openings in the piston. A linkage is provided which is rotatable about the piston rod to close any or all of the passages through the valve and thus regulate the damping force. The position of the linkage is determined by the interaction of the linkage with a stop member and the piston rod. The stop member is an element which may be extended through one end of the cylinder to engage an extension of the linkage to hold it in place while the piston rod bearing the valve is turned to open or close openings in the valve and thus change the damping force the shock absorber can exert. The stop member is adaptable to be retracted from contact with the linkage so that the adjustment will not be disturbed. Click-stops are provided between elevations on the linkage and apertures affixed to the end of the piston to provide "feel" and perceptible noise to indicate intermediate positions have been reached.

REFERENCES:
patent: 2182016 (1939-12-01), Deutsch
patent: 2335907 (1943-12-01), Boor et al.
patent: 2487472 (1949-11-01), Patriquin
patent: 3827538 (1974-08-01), Morgan

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