Angled dual check valve

Details Angled dual check valve Angled dual check valve

2007-03-06

2007-03-06

Keasel, Eric (Department: 3753)

Fluid handling

Removable valve head and seat unit

Retained by bonnet or closure

C137S512000, C137S543000

Reexamination Certificate

active

11023105

ABSTRACT:
Poppet valve installation or removal is simplified through the use of a unitary poppet assembly that may be accurately placed into a valve body through an access opening and wherein the poppet is slidably mounted in a stem in an insert while being permanently affixed thereto by the interference fit between a shoulder on the poppet stem and a post within the sleeve.

REFERENCES:
patent: 1486567 (1924-03-01), Deacon
patent: 1712798 (1929-05-01), Johnston et al.
patent: 4084609 (1978-04-01), Johnson
patent: 4159025 (1979-06-01), Harthun
patent: 4203466 (1980-05-01), Hager
patent: 4257443 (1981-03-01), Turney
patent: 5207242 (1993-05-01), Daghe et al.
patent: 5349934 (1994-09-01), Miyano
patent: 6142037 (2000-11-01), Botosan et al.
patent: 6579448 (2003-06-01), Dworatzek
patent: 6792925 (2004-09-01), Dworatzek et al.

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