Shaft seal

Details Shaft seal Shaft seal

1994-07-07

1995-10-24

Kashnikow, Andres

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 11, 277152, F16J 1532

Patent

active

054603862

ABSTRACT:
A radial lip seal comprises a rigid casing ring (10") and a rubbery sealing element (12") secured to the ring. An inner portion (13") of the element forms a sealing lip (14) for engagement with a shaft (S). Adjusting means, enabling variation of the bore of the seal, comprises an annular adjusting member (17") which moves axially upon rotation about the seal axis. The member comprises a mounting portion (18") and an inner portion forming an axially-projecting bearer (19") which abuts the sealing element adjacent to the lip (14). Four camming tongues (22) project outwards from the casing ring to engage in slots (24) in the adjusting member (17"), the tongues being angled so as to cause controlled axial displacement of the member with rotation. A stop tongue (26) engaging in a gap (27) in the adjusting member limits the range of adjustment.

REFERENCES:
patent: 2405120 (1946-08-01), Evans
patent: 2481793 (1949-09-01), Stewart
patent: 2590696 (1952-03-01), Gregoire
patent: 2816784 (1957-12-01), Stucke
patent: 3264885 (1966-08-01), Shellhouse et al.
patent: 3837687 (1974-09-01), Leonard
patent: 4191384 (1980-03-01), Svedberg
patent: 4218813 (1980-08-01), Cather, Jr.
patent: 4283064 (1981-08-01), Staab et al.
patent: 4433846 (1984-02-01), Romero et al.

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