Sealing assembly

Details Sealing assembly Sealing assembly

1979-10-15

1981-06-02

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 72R, 277 74, 277 75, F16J 1526, F16J 1540

Patent

active

042707609

ABSTRACT:
An assembly for sealing clearance space around a shaft between the shaft and a surrounding member comprising a housing mounted adjacent the clearance space in fixed position relative to the shaft, the latter extending through the housing. A relatively rigid sealing ring is mounted in the housing around the shaft and is secured in fixed position relative to the housing. An annular recess opens radially inwardly around the shaft at the side of the ring toward the clearance space. Passaging in the ring communicates with this recess. The housing has an inlet for delivery of gas under pressure via the passaging in the ring to the recess, the gas flowing along the shaft and into the clearance space for inhibiting escape through the clearance space of material tending to move therethrough in a direction opposite to the gas flow.

REFERENCES:
patent: 2321927 (1943-06-01), McCoy et al.
patent: 3468259 (1969-09-01), Morzynski et al.
patent: 3776558 (1973-12-01), Maurer et al.
patent: 3834715 (1974-09-01), Butler
patent: 3887199 (1975-06-01), Sundquist
patent: 3907307 (1975-09-01), Maurer et al.
patent: 4021050 (1977-05-01), Powers
patent: 4153259 (1979-05-01), Torstensson

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