Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1984-12-10
1985-11-19
Ward, Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277165, 277205, 251214, F16J 1518, F16K 4104
Patent
active
045537593
ABSTRACT:
An improved valve with an improved stem seal including a body having a valve chamber, an inlet to and an outlet from the valve chamber, and a valve seat in the valve chamber, a valve member movable in the valve chamber and coacting with the valve seat to control flow through the valve, a valve stem connected to the valve member and extending through an opening in said body, means coacting with said stem to move said valve member, a stem sealing assembly positioned in said opening surrounding said stem and means for retaining the stem sealing assembly in position, said assembly including a wear resistant and corrosion resistant sealing ring having a plurality of internal and external grooves with internal and external sealing lips between the grooves, and an annular end recess opening toward the valve member, a soft sealing ring in each of the inner rod outer grooves fartherest from said valve member and a load ring positioned in said end recess and having a tapered external surface extending toward the axis of said stem in a direction toward said valve member. In a modified form of said sealing assembly the load ring also includes an internal taper extending toward the axis of said stem in a direction away from the valve member.
REFERENCES:
patent: 1844409 (1932-02-01), Rypinski
patent: 3223426 (1965-12-01), Reid
patent: 3554569 (1971-01-01), Gorman
patent: 3603603 (1971-09-01), Woodson
patent: 3653672 (1972-04-01), Felt
patent: 3916943 (1975-11-01), Hester et al.
Cameron Iron Works, Inc.
Ward Robert S.
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