Non-contacting seal with centering spring mounted in dovetailed

Details Non-contacting seal with centering spring mounted in dovetailed Non-contacting seal with centering spring mounted in dovetailed

1994-02-25

1996-07-09

Cummings, Scott W.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 85, 277171, F16J 1534

Patent

active

055337392

ABSTRACT:
Non-contacting seal for shafts rotating at high speeds with improved centering means for low unbalance of seal rotating parts. Centering means comprise a shallow circumferential groove with slanted sides and an elastic centering strip of ladder-like form between two cylindrical surfaces to be held concentric. Since slanted sides of the groove overlap sides of the centering strip it cannot be displaced out of its groove during assembly, or during operation. Displaced centering strip could cause unbalance, vibrations, damage to the seal or to the surrounding equipment.

REFERENCES:
patent: 1439845 (1922-12-01), Seib et al.
patent: 3559725 (1971-02-01), Fucinari et al.
patent: 3973780 (1976-08-01), Hornsuch
patent: 5039113 (1991-08-01), Gardner
patent: 5183270 (1993-02-01), Alten et al.
patent: 5344161 (1994-09-01), Sandgren

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