Seal

Details Seal Seal

1989-10-05

1991-10-22

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 81R, 277 82, 277 961, 277136, F16J 1538

Patent

active

050589059

ABSTRACT:
The sliding face (22) of a gas lubricated slide ring seal has a slide ring (20) which is displaceable in the axial direction at a wall (4) to be sealed and lies against the sliding face (21) of a mating ring (10) which is fastened on an intermediate sleeve (10) so as to be immovable and sealing. The intermediate sleeve is rotatably mounted by roller bearings (16) on the shaft (2) to be sealed and is sealed against the shaft by a dynamic sealing device (15). Between the shaft (2) and the intermediate sleeve (10) a coupling (17) is provided which couples the shaft with the intermediate sleeve (10) during rotation of the shaft in its regular direction of rotation (1'), thus driving the mating ring (19) and pumping gas from the chamber (6) to be sealed through conveying grooves (24) disposed in its sliding face (21) into the area between the two sliding faces 21, 22). In the opposite direction of rotation (1"), the coupling (17) decouples for preventing the sliding faces (21, 22), from performing a relative movement opposite to that during rotation in the regular direction (1').

REFERENCES:
patent: 3499653 (1970-03-01), Gardner
patent: 4434986 (1984-03-01), Warner
patent: 4443015 (1984-04-01), Duffee et al.
patent: 4842494 (1989-06-01), Speiser

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