Pneumatic spring having selectively releasable rod-retaining str

Details Pneumatic spring having selectively releasable rod-retaining str Pneumatic spring having selectively releasable rod-retaining str

1979-11-27

1982-01-05

Marbert, James B.

Spring devices

Fluid

Expansible-contractible chamber device

267 6412, 92 18, 188300, F16F 932

Patent

active

043090273

ABSTRACT:
In the illustrative embodiments described, a pneumatic spring includes selectively releasable structure, located in part at the outer end of the piston rod and in part at the corresponding end of the cylinder, for retaining the piston rod at or near its innermost position within the cylinder. The retaining structure carried by the cylinder preferably constitutes a sleeve surrounding the piston rod, and the structure carried by the piston rod may include projections for coacting with shoulders on the sleeve. Alternatively, the sleeve and piston rod may be formed with cooperating recesses for receipt of an external pin-like securing bracket.

REFERENCES:
patent: 2920338 (1960-01-01), Falk
patent: 3789742 (1974-02-01), Hershman et al.
patent: 3883126 (1975-05-01), Nicholls
patent: 4078779 (1978-03-01), Molders
patent: 4166612 (1979-09-01), Freitag et al.

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