Gate valve for vacuum and seal member used therefor

Details Gate valve for vacuum and seal member used therefor Gate valve for vacuum and seal member used therefor

2007-06-22

2011-12-13

Bastianelli, John (Department: 3753)

Valves and valve actuation

Reciprocating valve

Gate

C277S560000, C277S641000, C277S644000

Reexamination Certificate

active

08074967

ABSTRACT:
A gate valve for vacuum capable of preventing a seal member from being cracked or particles from being produced due to a stress concentration even if the seal member is repeatedly compressed in the state that the adhesive agent is separated from the open side of a seal member mounting groove and capable of suppressing particles from being produced due to the rub of the seal top part with the seal surface.

REFERENCES:
patent: 3401915 (1968-09-01), Kim
patent: 3575431 (1971-04-01), Bryant
patent: 6629682 (2003-10-01), Duelli
patent: 6932354 (2005-08-01), Kane et al.
patent: 6964799 (2005-11-01), Mizuno et al.
patent: 11336905 (1999-12-01), None
patent: 2001241553 (2001-09-01), None
patent: 2003049949 (2003-02-01), None
patent: 2004286067 (2004-10-01), None
patent: 2005252184 (2005-09-01), None

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