Adjustable liquid-operated shock-absorber

Details Adjustable liquid-operated shock-absorber Adjustable liquid-operated shock-absorber

1974-12-16

1976-05-11

Blix, Trygve M.

Brakes

Internal-resistance motion retarder

Having a thrust member with a variable volume chamber

188299, 272130, F16F 919

Patent

active

039556557

ABSTRACT:
A liquid-operated tubular shock-absorber capable of exerting an adjustable force, comprises two concentric tubes fixed one inside the other with a narrow annular spacing between their walls, and a piston provided with a spindle sliding in sealing-tight relationship in the inner tube to define two chambers therein; in the end regions the spacing between the tubes communicates with both chambers inside the inner tube to form a closed circuit which is filled with liquid. A needle valve for regulating the flow of liquid are provided. The shock-absorber is particularly useful in physical training as a very reliable exerciser which operates in both compression and traction.

REFERENCES:
patent: 767008 (1904-08-01), Pelletier et al.
patent: 2038032 (1936-04-01), Flynn
patent: 2239112 (1941-04-01), Nickelsen

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