Gas replacement system

Details Gas replacement system Gas replacement system

2009-05-15

2011-11-22

Bochna, David E (Department: 3679)

Pipe joints or couplings

With fluid pressure seal

Flexible lip

C285S106000, C285S204000, C285S141100, C015S301000

Reexamination Certificate

active

08061738

ABSTRACT:
A seal member has a configuration including a ring-shaped main body portion, an inner peripheral lip portion protruding from a ring inner peripheral portion of the main body portion and an outer peripheral lip portion protruding from a ring outer peripheral portion of the main body portion. The inner peripheral lip portion takes an O-ring shape deformable in a protruding direction. The outer peripheral lip portion takes a structure deformable in a direction different from an extending direction, corresponding to a pressure in a sealed area. The member preferably seals when in communication with a plurality of spaces separated from an external space, the plurality of spaces from an external environment.

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