Non-stick treatment for elastomeric slit valves
AssigneeVernay Laboratories, Inc.
InventorsDennis A. Boehmer, James R. Kunce, David O. Werbil
Life of this patent
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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.
Claims27
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.
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.
A method of forming a non-stick treated valve including the steps of:
- 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.
Dependencies are inferred from the claim text.