Piston locking for gas springs

Details Piston locking for gas springs Piston locking for gas springs

1982-02-26

1985-07-09

Stoner, Jr., Bruce H.

Spring devices

Vehicle

Comprising compressible fluid

92 30, 267120, 296 56, 403375, 403377, F16F 500

Patent

active

045277800

ABSTRACT:
A pneumatic or gas spring includes a cylinder filled with gas under pressure and a piston which is slidably movable in the cylinder, the piston being fitted at the end of a rod which is gastightly and slidably guided through a closure bottom of the cylinder. The piston rod is lockable in its extreme extension position out of the cylinder by means of a snap ring fitted on the piston rod which cooperates with a localized constriction or step protruding inwardly from the cylinder wall adjacent its rod guide bottom, the snap ring having an external diameter intermediate between the inner diameters of the cylinder and the constriction or step.

REFERENCES:
patent: 2515493 (1950-07-01), Buono
patent: 3947006 (1976-03-01), Bauer et al.
patent: 4078778 (1978-03-01), Hubweber
patent: 4096927 (1978-06-01), Takatsu
patent: 4099292 (1978-07-01), McCabe
patent: 4240619 (1980-12-01), Wirges et al.
patent: 4272064 (1981-06-01), Katsumori et al.
patent: 4323224 (1982-04-01), Freitag et al.

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