Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1980-08-18
1981-09-29
Smith, Robert I.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
285374, F16J 1518
Patent
active
042918898
ABSTRACT:
An annular seal assembly adopted for use in wellheads to seal between a well conduit and a wellhead. The seal ring for sealing between the outer surface of the well conduit and the inner surface of the wellhead is positioned between a lower support ring and an upper follower ring. The upper follower ring controls deformation of the seal ring by distributing the longitudinal forces to uniformly deform the seal ring. A pair of actuating rings are disposed adjacent the follower ring to provide the longitudinal force on urging to the follower by converting relative rotational movement therebetween to longitudinal movement or expansion between said actuating rings. Such longitudinal movement is confined to produce the longitudinal urging to deform the seal. Engaged cam on the actuating rings produce increased longitudinal movement in response to a holddown screw enlarging a gapped opening formed in the actuating rings.
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Cactus Pipe & Supply Co., Inc.
Pravel, Gambrell Hewitt, Kirk, Kimball & Dodge
Smith Robert I.
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