Shaft seal

Details Shaft seal Shaft seal

1990-03-26

1991-05-14

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 97, 277105, 277135, F16J 1510, F16J 1518

Patent

active

050149989

ABSTRACT:
A shaft seal for sealing a rotating shaft relative to a panel or wall of a device from which the shaft extends. The shaft seal has a tubular housing including a packing gland for shaft packings which is floatingly mounted to a wall or panel of the device by an annular diaphragm. A bushing in the bore of the tubular housing causes the tubular housing to move bodily as permitted by the floating mounting when shaft run-out occurs. A connection between the panel and the tubular housing limits rotation thereof resulting from torsional forces derived from shaft rotation. A unitary structure fixed to the shaft for rotation therewith and mounted adjacent an outer end of the tubular housing coacts with an annular thrust washer fixed to said end of the tubular housing to absorb the loads applied to the annular diaphragm and tubular housing acting axially of the shaft. This unitary structure includes a collar fixed to the shaft, a thrust washer engaging the annular washer fixed to an end of the tubular housing and a resilient member bonded therebetween which exerts loading on the thrust washers.

REFERENCES:
patent: 3531168 (1970-09-01), Bainard
patent: 3743305 (1973-07-01), Berens et al.
patent: 3907307 (1975-09-01), Maurer et al.
patent: 3988026 (1976-10-01), Kemp, Jr.
patent: 4194746 (1980-03-01), Stevens
patent: 4301893 (1981-11-01), St. Jean et al.
patent: 4328973 (1982-05-01), Delbridge
patent: 4498681 (1985-02-01), Heinz
patent: 4582329 (1986-04-01), Stalph

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