Spring device

Details Spring device Spring device

1976-11-24

1979-02-13

Halvosa, George E. A.

Spring devices

Fluid

Expansible-contractible chamber device

16 51, 91395, 188284, 188285, 188315, 188318, 267 64R, F16F 949

Patent

active

041391829

ABSTRACT:
A spring device including a piston slidably disposed in an inner cylinder of a dual inner and outer cylinder with a piston rod secured thereto and extending to the outside of the cylinder through a rod guide closing one end of the inner cylinder, an oil passage formed in the rod guide and connecting an annular chamber between the inner and outer cylinders with the interior of the inner cylinder, and a device for supplying a force on the piston to project the piston rod outwardly, in which a guide member is supported on the piston rod with a coil spring interposed between the guide member and the piston, and the guide member is adapted to contact the rod guide to control the oil flowing through the oil passage when the piston rod moves outward by a predetermined amount.

REFERENCES:
patent: 2619199 (1952-11-01), Schwary
patent: 3024874 (1962-03-01), DeKoning et al.
patent: 3034482 (1962-05-01), Rader
patent: 3661236 (1972-05-01), Wossner
patent: 3885654 (1975-05-01), Hauswirth

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