Supports – Resilient support – Including additional energy absorbing means – e.g. – fluid or...
Patent
1987-09-21
1988-11-15
Chin-Shue, Alvin C.
Supports
Resilient support
Including additional energy absorbing means, e.g., fluid or...
2481883, 188298, F16F 908, F16M 1300
Patent
active
047843624
ABSTRACT:
A hydraulic automatically ascending apparatus includes a hydraulic cylinder including a piston and a piston rod which extends from the piston to connect with an article, a volume-variable oil tank, an elastometric body for biasing the oil tank to retract, an oil pipe for intercommunicating with the hydraulic cylinder and the oil tank, and a stop valve mounted in the oil pipe for being manually closed to stop oil flow between the hydraulic cylinder and the oil tank. When the stop valve is opened and when the article is loaded, the article can be descended and thus positioned at a desired position. When the stop valve is opened and when the article is unloaded, the article can be ascended to an upper limit position. A throttle valve is preferably installed within the oil pipe for slowing the movement of the piston rod.
REFERENCES:
patent: 2856035 (1958-10-01), Rohacs
patent: 3121479 (1964-02-01), Dillenburger et al.
patent: 3752270 (1973-08-01), Voildespino
patent: 4614255 (1986-09-01), Morita et al.
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