Patent ID: 9222589
Filing Date: 2015-12-29
Classification: F16K,Y10T

Abstract:
1. An automatic shutoff device comprising: a housing member with a hollow opening; an inlet port coupled to a first end of the housing member; an outlet port coupled to a second end of the housing member; a variable volume chamber within the housing member with an open end facing the inlet port of the housing member and a fixed closed end with flow restriction holes facing the outlet port of the housing member, the variable volume chamber positioned within the housing so that fluid flows from the inlet port both into the open end and between an outside of the variable volume chamber and an inside of the housing member to the outlet port; a spring-biased piston within the variable volume chamber comprising a compressible spring and a piston at the closed end of the chamber; a one-way valve disposed in the closed end of the variable volume chamber; and a disk comprising an outer rim and a center support member comprising an aperture wherein the center support member is rigidly coupled to at least one point of the outer rim.