Self-contained anti-blowout seal for fluids or gases
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United States of America Patent
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-
Nov 4, 2003
Grant Date -
Nov 7, 2002
app pub date -
Apr 17, 2002
filing date -
Apr 18, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A self contained anti-blowout seal includes a seal jacket having a static seal surface and a dynamic seal lip with a cavity therebetween. A retaining ring is provided and disposed, in part, within a cavity of the seal jacket and proximate the static seal surface for pressing the static seal surface against a mounting surface. The retaining ring includes a surface extending outside the cavity for bearing against a mounting surface and a depending portion is provided which extends over the cavity opening and includes at least one port communicating with the cavity for enabling a sealing medium to enter and exit the cavity as the seal is pressure energized. A biasing element is provided and disposed in the cavity for forcing the dynamic seal lip against a moving member.
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