Fluid sprinkling – spraying – and diffusing – Slow diffusers
Reexamination Certificate
2005-05-31
2005-05-31
Evans, Robin O. (Department: 3742)
Fluid sprinkling, spraying, and diffusing
Slow diffusers
C239S044000, C239S049000, C239S050000, C239S057000, C239S058000, C239S060000
Reexamination Certificate
active
06899280
ABSTRACT:
A wick-based delivery system includes a container for holding a liquid, and a porous wick, having a first section of a material with a pore size of a predetermined size and a second section of a material of a predetermined pore size that is greater than that of the material of the first section. The porous wick extends through an opening in the container so that when the liquid is added to the container, a lower region of the porous wick is in contact with the liquid, and an upper region of the porous wick is exposed to the ambient air. In one embodiment, at least a portion of the first section and at least a portion of the second section are exposed to the ambient air. In another embodiment, only the second section is exposed to the ambient air.
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Kotary Kara L.
Varanasi Padma Prabodh
Evans Robin O.
S. C. Johnson & Son Inc.
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