Non-stick treatment for elastomeric slit valves
First Claim
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1. A non-stick treated valve comprising:
- a pair of cooperating elastomeric surfaces positioned to engage each other to control fluid flow through said valve; and
a non-stick coating applied to said cooperating surfaces to facilitate separation of said cooperating surfaces from each other.
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Abstract
A non-stick treated valve including a pair of cooperating elastomeric surfaces positioned to engage each other to control fluid flow through the valve. A non-stick coating is applied to the cooperating surfaces to facilitate separation of the surfaces from each other during opening of the valve. The non-stick coating is in the form of an oily substance such as a fluid lubricant for forming a fluid film coating on the cooperating surfaces. In addition, the coating material is formed of a material which is dissimilar from the material forming the cooperating surfaces.
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Citations
27 Claims
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1. A non-stick treated valve comprising:
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a pair of cooperating elastomeric surfaces positioned to engage each other to control fluid flow through said valve; and a non-stick coating applied to said cooperating surfaces to facilitate separation of said cooperating surfaces from each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A duckbill valve including a valve body having a pair of opposed lips connected by side walls to form a fluid passage through the valve, said lips having inner surfaces extending in converging relation to define a slit at an outlet end of the valve, the improvement comprising:
a non-stick coating applied to said inner surfaces of said lips at said slit to facilitate opening of said valve. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of forming a non-stick treated valve including the steps of:
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providing a valve body having opposed cooperating surfaces for controlling fluid flow through said valve body; moving dispensing means into association with said cooperating surfaces; and dispensing a non-stick material from said dispensing means onto said cooperating surfaces. - View Dependent Claims (24, 25, 26, 27)
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Specification