Cylinder-and-piston device

Details Cylinder-and-piston device Cylinder-and-piston device

1979-11-14

1982-01-12

Marbert, James B.

Spring devices

Fluid

Expansible-contractible chamber device

267120, 267 6425, B60G 1126

Patent

active

043101488

ABSTRACT:
In the illustrative embodiments of the invention described, a pneumatic cylinder-and-piston device includes a unitary piston structure for providing two different damping rates in dependency on the direction of movement of the piston within the cylinder. Fluid flow across the piston is preferably controlled, to effect the different damping rates, by use of an elastic sleeve which at one end is carried by the piston and which at the other end engages, suitably under fluid pressure, the inner surface of the cylinder.

REFERENCES:
patent: 3207498 (1965-09-01), Wustenhagen et al.
patent: 3794309 (1974-02-01), Chrokey et al.
patent: 3937450 (1976-02-01), Bauer
patent: 3963225 (1976-06-01), Nicholls
patent: 3963227 (1976-06-01), Molders
patent: 4030715 (1977-06-01), Duran
patent: 4045008 (1977-08-01), Bauer
patent: 4089512 (1978-05-01), Allinquant et al.
patent: 4113071 (1978-09-01), Muller et al.

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