Title:
DEVICE FOR REDUCING THE PRESENCE OF MOISTURE WITHIN AN ENCLOSURE CONTAINING A HEAT SOURCE
Document Type and Number:
WIPO Patent Application WO2002077522
Kind Code:
A9
Abstract:
A venting device (50) that reduces the moisture of an enclosure containing a heat source and prevents the entrance of water or other liquids and contamination from entering the enclosure. The moisture reducing device (50) comprises a drying agent or desiccant (42) which is adjacent to said heat source (such as an automotive headlamp bulb or thermally cycling device), an air-impermeable, water-vapor permeable layer (40), a vent (52) that allows bulk flow of air during thermal cycling of the heat source and a internal diffusion tube or channel (65) that limits the entrance of moisture vapor from the external atmosphere to the drying agent or desiccant (42). The air-impermeable, water-vapor permeable layer (40) allows for continuous diffusion of water vapor, reducing the moisture in the enclosure when the heat source is de-energized. The location of the device to the heat source regenerates the drying agent in the device when the heat source is energized. The device may be in a variety of shapes for ease of placing the device adjacent to the heat source.
Inventors:
DEGUISEPPI DAVE T
DEWITT KERRY L
JOHNSON AMY ELIZABETH
DEWITT KERRY L
JOHNSON AMY ELIZABETH
Application Number:
PCT/US2002/011168
Publication Date:
April 10, 2003
Filing Date:
March 26, 2002
Export Citation:
Assignee:
GORE ENTERPRISE HOLDINGS INC (US)
International Classes:
F21V31/00; B01D53/22; B01D53/26; B01D69/12; B01D71/32; B01D71/34; B01D71/36; B01D71/40; B01D71/54; B01D71/70; B01D71/82; F21S8/10; F21V31/03; (IPC1-7): F21V31/03; B01D53/26
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