Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Reexamination Certificate
2007-05-18
2010-11-23
Hepperle, Stephen (Department: 3753)
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
C137S505250, C137S508000
Reexamination Certificate
active
07836911
ABSTRACT:
A pressure regulator which includes a body. The body has inner walls defining an inlet port. Slidably moving within the inlet port is a hollow stem of a valve and piston assembly. The hollow stem is in slidable gas sealing contact with the inlet port. The valve and piston assembly includes a piston having a piston head with a valved opening therethrough. In the opening in the piston head is the arm of a plug. A body of the plug lies within the sliding piston held in place by a keeper spring, the keeper spring for maintaining a removed end of the plug arm against inner walls of the body. With such a structure, movement of the piston and valve assembly will be capable of unseating the plug from the valved opening in the piston allowing gas to flow from the hollow stem at the inlet port through an inner volume of the piston, through the valved opening of the piston head and into a regulated gas chamber defined in part by the inner walls of the body and an outer surface of the piston head.
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Arnott Glen M.
Hepperle Stephen
Holt Daniel A.
Jackson & Walker, LLP
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