Reverse action flow activated shut-off valve

Details Reverse action flow activated shut-off valve Reverse action flow activated shut-off valve

2008-10-16

2011-12-27

Fristoe, Jr., John (Department: 3753)

Fluid handling

Destructible or deformable element controlled

Destructible element

C137S523000, C166S317000

Reexamination Certificate

active

08082941

ABSTRACT:
A flow activated valve includes an outer body and a piston disposed in an inner cavity of the outer body. The flow activated valve also includes one or more fluid passage exits in the outer body and one or more piston fluid passages in the piston. The one or more fluid passage exits and the one or more piston fluid passages allow fluid flow out of the valve. The flow activated valve also includes a flow restriction member disposed in a piston inner cavity. In addition, the flow activated valve includes a shear member disposed in the outer body, and a bias member disposed in an inner cavity of the outer body. The flow activated valve further includes a position control member disposed in the piston and a sealing member.

REFERENCES:
patent: 3016015 (1962-01-01), Filstrup
patent: 3872884 (1975-03-01), Busdiecker et al.
patent: 4082104 (1978-04-01), Keeney
patent: 4519457 (1985-05-01), Holland et al.
patent: 4574894 (1986-03-01), Jadwin
patent: 6341616 (2002-01-01), Taylor
patent: 6349771 (2002-02-01), Luke
patent: 6640824 (2003-11-01), Majkovic

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