Seal for pneumatic, hydraulic or hydropneumatic units

Details Seal for pneumatic, hydraulic or hydropneumatic units Seal for pneumatic, hydraulic or hydropneumatic units

1986-07-28

1988-06-14

Dorner, Kenneth J.

Brakes

Internal-resistance motion retarder

Including seal or guide

188300, 267 6411, 277165, 277214, F16F 936, F16J 920

Patent

active

047505940

ABSTRACT:
In a fluid-operated device such as a gas spring a piston rod is axially movably guided through a passage in an end wall of the gas spring. A sealing disc of elastomeric material is axially compressed between two supporting faces and engages the piston rod with a convex radially inner edge. The apex of the edge is substantially midway of the axial thickness of the sealing disc. Preferably the sealing disc has also a radially outwardly convex sealing edge which is in sealing engagement with a stationary face surrounding the sealing disc.

REFERENCES:
patent: 1365030 (1921-01-01), Flentje
patent: 2942668 (1960-06-01), Maly et al.
patent: 3368650 (1968-02-01), Wasdell
patent: 3712429 (1973-01-01), Otto
patent: 4336946 (1982-06-01), Wheeler
Two (2) pages of "Busak & Luyken Dichtungen", catalog for seals.

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