Patent ID: 6089262
Filing Date: 2000-07-18
Classification: B60T,F16K,Y10T

Abstract:
A check valve device comprising:(a) a valve housing defining an inlet channel, an outlet channel and at least one valve bore through which said inlet and outlet channels interconnect;(b) a valve seat, formed in said least one valve bore, having a generally flat annular surface from within which an opening emerges into a preferred one of said channels;(c) a resilient ring seal situated atop said flat annular surface of said valve seat and coaxially with said opening, said resilient ring seal having an outer periphery that abuts against an interior cylindrical wall of said at least one valve bore;(d) a retaining sleeve situated within said at least one valve bore, said retaining sleeve having (i) an outer cylindrical wall that abuts against said interior cylindrical wall of said at least one valve bore and (ii) a bottom that sits atop a peripheral portion of said resilient ring seal thereby sealingly retaining said resilient ring seal against said flat annular surface of said valve seat;(e) a valve member moveable within said retaining sleeve, said valve member having at one end thereof a head portion adapted to be pressed atop and against and form a leak-proof seal with an inner portion of said resilient ring seal that is so retained atop said flat annular surface of said valve seat;(f) a valve spring disposed compressively within said at least one valve bore against a non-seat facing side of valve member so as to bias said valve member via said head portion thereof against said resilient ring seal thereby biasing said valve member in a closed position wherein said preferred channel is cut-off from said at least one valve bore of said valve housing; and(g) a means for retaining said retaining sleeve and said valve spring within said at least one valve bore of said valve housing.