Throttle bushing

Details Throttle bushing Throttle bushing

1983-04-28

1984-06-26

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277134, 277203, F16J 1500, F16J 1516

Patent

active

044562667

ABSTRACT:
A pump system wherein a pressure drop exists across a throttle bushing surrounds a rotating shaft. The throttle bushing comprises an internal annular debris-collecting groove disposed inwardly from the higher pressure end of the bushing and in communication with an internal helical groove extending across the bushing to the opposite low pressure end thereof. The outer wall of the annular debris-collecting groove, the higher pressure end of the bushing, and the internal annular surface of the bushing therebetween all cooperate in defining a lip which deters oversized debris from entering between the lip of the shaft surface. The lip, helical groove and annular debris-collecting groove cooperate to purge the bushing of debris and thus enhance the efficiency and wear life of the bushing.

REFERENCES:
patent: 1877495 (1932-09-01), Cater
patent: 1961029 (1934-05-01), Benedek
patent: 2831737 (1958-04-01), Jacoby
patent: 3131940 (1964-05-01), Ertaud
patent: 3232683 (1966-02-01), Tomamoto
patent: 3331101 (1967-07-01), Thomas
patent: 3963247 (1976-06-01), Nommensen
patent: 4010960 (1977-03-01), Martin
patent: 4384725 (1983-05-01), Nenou
patent: 4398726 (1983-08-01), Heisler
patent: 4407511 (1983-10-01), Benton

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