Expansion tank with double diaphragm

Details Expansion tank with double diaphragm Expansion tank with double diaphragm

2007-12-04

2007-12-04

Stashick, Anthony D. (Department: 3781)

Receptacles

Container attachment or adjunct

Expanding or contracting portion or component

C138S030000

Reexamination Certificate

active

10828980

ABSTRACT:
A double-diaphragm bladder. The bladder comprises a non-flexible diaphragm having a peripheral edge and a flexible diaphragm having a peripheral edge. The non-flexible diaphragm has an aperture adapted and constructed to be connected to a liquid port, and the peripheral edges of the non-flexible diaphragm and the flexible diaphragm are sealed together. The bladder is suitable for use in an expansion tank.

REFERENCES:
patent: 3247999 (1966-04-01), Stilwell
patent: 4784181 (1988-11-01), Hilverdink
patent: 6264247 (2001-07-01), Lombari et al.
patent: 6343622 (2002-02-01), Keijzer et al.
patent: 2004/0173624 (2004-09-01), Carter

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