Cylinder-piston device

Details Cylinder-piston device Cylinder-piston device

1983-07-22

1984-08-28

Reger, Duane A.

Brakes

Internal-resistance motion retarder

Having a thrust member with a variable volume chamber

18832215, F16F 919

Patent

active

044678991

ABSTRACT:
In the illustrative embodiments of the invention disclosed, the piston unit of a gas spring incorporates a meander-shaped fluid passage for interconnecting the working chambers on either side of the piston unit so as to dampen movement of the piston rod relative to the cylinder. The meander-shaped passages may be constituted by a sequence of passage sections arranged at right angles to one another and, in one embodiment, are formed in the end faces of the piston member so as to lie in planes transverse to the axis of the cylinder. If desired, additional fluid passage units may be connected in series to provide an enhanced damping effect.

REFERENCES:
patent: 374080 (1887-11-01), Nickerson
patent: 3323550 (1967-06-01), Lee
patent: 4060200 (1977-11-01), Mehoudar
patent: 4180096 (1979-12-01), Johnson
patent: 4209133 (1980-06-01), Mehoudar
patent: 4215822 (1980-08-01), Mehoudar
"Technical Hydraulic Handbook," 5th Ed., The Lee Company, Westbrook, Connecticut, pp. 88-131, (1971).

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