Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1982-12-13
1983-11-15
Smith, Robert I.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 42, 277 43, F16J 1534
Patent
active
044151675
ABSTRACT:
In a rotary end face seal for fluid pumps or the like including a housing adapted to be received within a seal counterbore, a primary seal ring with an end face portion adapted to engage a mating ring, a spring element urging the primary seal ring axially outwardly of the housing in a first direction, and an elastomeric sleeve providing a secondary seal between the housing and the seal ring. The seal also includes a seal ring holder and drive unit which includes radially inwardly directed drive surfaces adapted to engage counterpart outwardly directed drive faces on the primary seal ring, with both of the ring and the drive unit surfaces extending axially to permit free but limited axial movement of said primary seal ring. A tubular shroud is provided for the spring, and the sleeve is held in fluid-tight relation to the ring and the housing by engagement between one end portion of the drive ring and by engagement with the spring shroud on another diameter of the sleeve, the drive ring being held in the position of engagement and against axial outward movement by engagement between its other end surface portion and a locking rib extending inwardly from an inner diameter portion of the housing.
REFERENCES:
patent: 2899219 (1959-08-01), Payne
patent: 2994547 (1961-08-01), Dolhun
patent: 3355178 (1967-11-01), Hornaday
patent: 3457870 (1969-07-01), Sleeter
patent: 3567230 (1969-09-01), Gits
patent: 4095807 (1978-06-01), Jandt et al.
patent: 4103906 (1978-08-01), Gits
Fitzgibbon James T.
Smith Robert I.
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