Temperature and pressure responsive seal

Details Temperature and pressure responsive seal Temperature and pressure responsive seal

2008-05-09

2010-10-26

Fristoe, Jr., John K (Department: 3753)

Valves and valve actuation

With correlated flow path

Tank

C251S148000, C251S214000, C277S582000

Reexamination Certificate

active

07819382

ABSTRACT:
A seal for a vessel is disclosed which militates against a leakage of fluid during expansion and contraction of the vessel due to changes pressure and temperature. Inner sealing surfaces of the seal form substantially fluid-tight seals in response to at least one of temperatures below a predetermined temperature and pressures below a predetermined pressure and outer sealing surfaces of the seal form substantially fluid-tight seals in response to at least one of temperatures above the predetermined temperature and pressures above the predetermined pressure.

REFERENCES:
patent: 1603903 (1926-10-01), Church
patent: 1796724 (1931-03-01), Rigby
patent: 2016226 (1935-10-01), Clausen
patent: 3648893 (1972-03-01), Whiting
patent: 5922766 (1999-07-01), Acosta et al.
patent: 5927726 (1999-07-01), Achenbach et al.
patent: 2007/0012551 (2007-01-01), Rohwer et al.
patent: 44 13 863 (1996-03-01), None
patent: 0 836 676 (1996-07-01), None

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