Hermetic seal for a shaft

Details Hermetic seal for a shaft Hermetic seal for a shaft

1980-05-30

1982-01-19

Staab, Lawrence J.

Machine element or mechanism

Flexible sealing diaphragm attached to moving rod and to casing

Pivoting or nutating rod

92 37, 74 182, F16J 1550

Patent

active

043110576

ABSTRACT:
An hermetic seal 10 for a linear rod 12 having a portion thereof projected axially through a port 20 defined in a wall for a pressure chamber 14 and supported thereby for omni-directional motion. The seal is characterized by a resilient, impervious, cylindrical body having a first section concentrically related to the shaft and integrally affixed thereto comprising a linear ordered array of annular flutes 22, a second section integrally affixed to the wall of the chamber and concentrically related to the port comprising a second linear ordered array of annular flutes 24, and a third section interposed between said first and second sections and integrally affixed thereto in coaxial alignment therewith comprising an annular ordered array of linear flutes 26 concentrically related to the shaft, whereby axial, angular, and pivotal motion of the rod is accommodated.

REFERENCES:
patent: 2867124 (1959-01-01), Quiroz
patent: 3004439 (1961-10-01), Ross
patent: 4030615 (1977-06-01), Guggi et al.
patent: 4058018 (1977-11-01), Lauper

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