Brakes – Internal-resistance motion retarder – Having a thrust member with a variable volume chamber
Patent
1981-09-28
1984-03-27
Reger, Duane A.
Brakes
Internal-resistance motion retarder
Having a thrust member with a variable volume chamber
18832215, F16F 919
Patent
active
044388330
ABSTRACT:
A piston for a pneumatic, hydraulic or hydropneumatic fluid-filled cylinder includes a constantly open throttled passage therethrough comprised by at least one spiral-shaped throttled channel extending in a plane perpendicular to the piston axis. The spiral configuration of the throttled channel permits the use of a relatively large flow cross section in the channel, thereby preventing clogging of the throttling passage by contaminants entrained in the damping medium, while still providing the desired damping effect.
REFERENCES:
patent: 3323550 (1967-06-01), Lee
patent: 3362508 (1968-01-01), Mayer
patent: 3672474 (1972-06-01), Mayer et al.
"Technical Hydraulic Handbook", 5th Ed., The Lee Company, Westbrook, Connecticut, pp. 88-131, (1971).
Reger Duane A.
Stabilus GmbH
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