Lockable piston-cylinder assembly

Details Lockable piston-cylinder assembly Lockable piston-cylinder assembly

1987-07-15

1988-12-27

Reger, Duane A.

Brakes

Internal-resistance motion retarder

With means for locking parts together temporarily

267 6412, F16F 934

Patent

active

047934506

ABSTRACT:
Lockable piston-cylinder assembly to be mounted between two parts being movable relative to each other such as a frame and top or foot end of a bed structure. The two chambers resulting from the division of the cylinder in a piston are interconnected by a hollow piston rod provided with openings. At least one of these openings can be closed by valve member arranged in said piston rod and so fluid communication between these chambers is controlled. Valve member is actuatable from one end of the piston rod outside cylinder. For obviating undesired pressure build up in space or for controlling the pressure in this space a connection is provided to the exterior of cylinder.

REFERENCES:
patent: 2453855 (1948-11-01), Oliver
patent: 2630887 (1953-03-01), Paquin
patent: 3322393 (1967-05-01), Neilson et al.
patent: 3563349 (1971-02-01), Spieth et al.
patent: 3828651 (1974-08-01), Dorner et al.

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