Patent ID: 7328718
Filing Date: 2008-02-12
Classification: G05D,Y10T

Abstract:
1. A pressure regulator comprising: a housing having an interior space, at least one input into the interior space and an output out of the interior space, the housing being configured to have a fluid enter into the interior space through the at least one input and exit the interior space through the output, the housing having a first portion and a second portion; a closure member for each input, the closure member selectively covering an associated one of the at least one input for preventing fluid flow into the interior space of the housing; a diaphragm in the housing, the diaphragm including a periphery captured between the first portion of the housing and the second portion of the housing, the diaphragm being interconnected to the closure member; and a biasing member for each closure member, the biasing member configured to selectively bias the closure member away from the associated one of the at least one input to allow fluid flow through the input; wherein the diaphragm is configured to move against the biasing member when pressure in the interior space is above a predetermined amount, whereby the closure member will move in response to movement of the diaphragm to close the at least one input such that fluid is not able to pass into the interior space through the input; and wherein the diaphragm includes a pair of sleeves, each sleeve having a rolling receiver portion receiving one of the biasing members therein, the diaphragm includes a substantially planar flat surface portion located interior of the periphery of the diaphragm captured between the first portion of the housing and the second portion of the housing, the planar flat portion surrounding the sleeves and being located between the sleeves, whereby the rolling receiver portions can move with movement of the biasing members without substantially moving the substantially planar flat surface portion.