Seal for a joint or juncture – Seal between relatively movable parts – Diverse and distinct dynamic seals
Patent
1995-06-02
2000-11-14
Knight, Anthony
Seal for a joint or juncture
Seal between relatively movable parts
Diverse and distinct dynamic seals
277377, 277387, 277390, 277400, F16J 1534
Patent
active
061458406
ABSTRACT:
A face seal is provided for a rotating shaft for sealing between a normally high pressure region and a normally lower pressure region, having a seal ring shaped to form a gap between the ring and a runner surface on the shaft, which gap converges in the direction of fluid flow and deliberately creates turbulent flow along the seal gap and sufficient clearance between the rotating runner and the seal ring to accommodate distortions in the seal ring which may occur over its lifetime. A servo system is coupled to the seal ring which moves the seal ring away from the runner during low pressure differences between the regions and which restores the sealing function along the seal gap when the pressure difference between the regions increases sufficiently.
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Beres John L.
Dermer Zigmund L.
Knight Anthony
Stein Seal Company
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