Brakes – Internal-resistance motion retarder – Having a thrust member with a variable volume chamber
Patent
1974-10-11
1976-02-10
Blix, Trygve M.
Brakes
Internal-resistance motion retarder
Having a thrust member with a variable volume chamber
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
Blix Trygve M.
IT&T Industries, Inc.
Kazenske Edward R.
Raden J. B.
Warner D. P.
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