Shaft seals including a seal element and a drive ring assembly t

Details Shaft seals including a seal element and a drive ring assembly t Shaft seals including a seal element and a drive ring assembly t

1982-04-19

1983-06-07

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 89, 277 93SD, 277126, 277144, F16J 1536, F16J 1538

Patent

active

043867855

ABSTRACT:
A shaft seal including a sealing element and a drive ring assembly for mounting the sealing element with respect to a shaft, for rotation therewith; the drive ring assembly comprising a pair of concentric rings one mounted within the bore of the other, a plurality of circumferentially spaced radial clamping screws in screw threaded engagement with the outer ring, so that they may be tightened against the outer surface of the inner ring, the abutting surfaces of the screws and the inner ring being mutually inclined, so that tightening of the screws against the inner ring, will cause the inner ring to move axially towards a shoulder on the bore of the outer ring, so as to compress a sealing ring positioned between the shoulder and the opposed end of the inner ring, thereby causing the sealing ring to expand radially into sealing engagement with the opposed surfaces of the shaft and the outer ring, while at the same time said screws deform the inner ring into clamping engagement with the shaft.

REFERENCES:
patent: 1569751 (1926-01-01), Higgins
patent: 4103904 (1978-08-01), Tankus
patent: 4114904 (1978-09-01), Wentworth
patent: 4136887 (1979-01-01), Wentworth

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