Closure valve apparatus for fluid dispensing
First Claim
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1. A closure valve comprising:
- a housing having first and second ends defining a flow passageway;
a poppet member disposed within said flow passageway and retained within said housing; and
a sleeve disposed within said housing and defining an opening in fluid communication with said poppet member and flow passageway of said housing;
said sleeve being biased so that said closure valve is in a normally closed position and said sleeve being movable so as to actuate said closure valve to an open position, said sleeve including a flexible sealing member disposed about a circumference of said sleeve at said opening of said sleeve, said sealing member forming a fluid tight seal with said poppet member in said closed position, and said sleeve including a flexible sealing structure disposed about a circumference of said sleeve defined by an outer sidewall of said sleeve, said sealing structure forming a fluid tight seal with said housing, said sealing member and said sealing structure being integrally molded lip seals that respectively define a wall structure extending from each circumference in a direction substantially as said flow passageway, whereby said sleeve is a one-piece molded part.
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Abstract
A closure valve used in a fluid dispensing assembly. The closure valve contains a housing, poppet, sleeve, and a biasing member. The closure valve provides simplified sealing structures for preventing product leakage and spill. The sealing structures being integrally molded sealing structures.
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Citations
12 Claims
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1. A closure valve comprising:
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a housing having first and second ends defining a flow passageway;
a poppet member disposed within said flow passageway and retained within said housing; and
a sleeve disposed within said housing and defining an opening in fluid communication with said poppet member and flow passageway of said housing;
said sleeve being biased so that said closure valve is in a normally closed position and said sleeve being movable so as to actuate said closure valve to an open position, said sleeve including a flexible sealing member disposed about a circumference of said sleeve at said opening of said sleeve, said sealing member forming a fluid tight seal with said poppet member in said closed position, and said sleeve including a flexible sealing structure disposed about a circumference of said sleeve defined by an outer sidewall of said sleeve, said sealing structure forming a fluid tight seal with said housing, said sealing member and said sealing structure being integrally molded lip seals that respectively define a wall structure extending from each circumference in a direction substantially as said flow passageway, whereby said sleeve is a one-piece molded part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification