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US 7,281,670 B2Granted
Wick-based delivery system with wick made of different composite materials
AssigneeS.C. Johnson & Son, Inc.
InventorsKara L. Lakatos, Adam Hagop Buchaklian, Robert J. Kopanic, Jr., Padma Prabodh Varanasi
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Abstract
A wick-based delivery system includes a container for holding a liquid that has an opening therein. A porous wick is positioned in the container so that a lower region of the wick is in contact with the liquid in the container and an upper region of the wick is exposed to the ambient air. The porous wick has discrete inner and outer concentric cylindrical sections, the inner cylindrical section being made of a sand-based material and the outer cylindrical section being made of a plastic material.
Claims8
A wick-based delivery system, comprising:
- a container for holding a liquid, the container having an opening therein;
- and
- a porous wick, having discrete inner and outer concentric cylindrical sections, the inner cylindrical section being made of a porous sand-based material and the outer cylindrical section being made of a porous plastic material, the wick being positioned in the opening of the container so that lower regions of the inner and outer concentric cylindrical sections are in contact with the liquid in the container and upper regions of the inner and outer concentric cylindrical sections are exposed to the ambient air,
- wherein the liquid travels from the lower region of the inner concentric cylindrical section to the upper region of the inner concentric cylindrical section and from the lower region of the outer concentric cylindrical section to the upper region of the outer concentric cylindrical section.
1 more element
Dependencies are inferred from the claim text.