Rotary seal with pressurized air directed at fluid approaching t

Details Rotary seal with pressurized air directed at fluid approaching t Rotary seal with pressurized air directed at fluid approaching t

1976-07-28

1978-08-01

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 3, 277 53, 277134, 432115, 415110, 415175, F16J 1540, F16J 1544

Patent

active

041038991

ABSTRACT:
A seal design which is particularly suited for use between the rotating and stationary components of a machine is disclosed. Various construction details which increase the resistance to the flow of a fluid medium across the seal from a region of higher pressure to a region of lower pressure are developed. The seal design is built around conventional rotary seals, such as labyrinth or wide channel seals, and includes means for aerodynamically impeding the flow of the fluid medium approaching the upstream end of the seal.

REFERENCES:
patent: 853059 (1907-05-01), Bunge
patent: 2123818 (1938-07-01), Wegmann
patent: 2199250 (1940-04-01), Stroebel
patent: 2448717 (1948-09-01), Jeffcock
patent: 2463898 (1949-03-01), Moore
patent: 2545916 (1951-03-01), Clark
patent: 2598176 (1952-05-01), Johnstone
patent: 2685429 (1954-08-01), Auyer
patent: 2988325 (1961-06-01), Dawson
patent: 3239193 (1966-03-01), Kerensky
patent: 3514112 (1970-05-01), Pettengill
patent: 3527053 (1970-09-01), Horn
patent: 3558238 (1971-01-01), Van Herpt
patent: 3768921 (1973-10-01), Brown et al.
patent: 3836156 (1974-09-01), Dunthorne
patent: 3989410 (1976-11-01), Ferrari

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