Liquid applicator with metering insert
AssigneeMinnesota Mining and Manufacturing Company
InventorsKaveh Pournoor, John D. Dell
Life of this patent
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Abstract
A liquid applicator is provided which is particularly useful in applying preoperative surgical scrubs or paints to skin. The article is provided with an inner layer of flexible porous material and an outer layer of open cell foam sponge material. The flexible, porous layer regulates the flow of liquid therethrough to provide acceptable wetting of the foam sponge while preventing dripping therefrom. The applicator includes a means of maintaining atmospheric pressure within the applicator while the liquid is being dispersed.
Claims12
An article useful as a dispenser for the application of a liquid to a surface, comprising
- (a) a hollow elongate member having a first major orifice at one end thereof;
- (b) a flexible, porous layer disposed over said first major orifice having at least one array of pores extending therein, each array of pores having an average pore size of between about 1 and 100 microns and a distribution of pore sizes of less than about 30 percent of the average pore size;
- (c) a layer of sponge material disposed over the exterior surface of said porous layer;
- and
- (d) means of maintaining atmospheric pressure within said hollow elongate member while the liquid to be applied by said applicator is being dispensed.
Dependencies are inferred from the claim text.