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Title:
OPTICAL LEVEL SENSOR FOR AN ELECTRIC HOUSEHOLD APPLIANCE, IN PARTICULAR FOR DETECTING THE CONDENSED WATER LEVEL IN DRYING MACHINES, AND ASSOCIATED METHOD
Document Type and Number:
WIPO Patent Application WO/2010/065842
Kind Code:
A3
Abstract:
An optical level sensor for an electric household appliance, including a tubular body provided with a first open end delimited on the inside of the tubular body by an annular edge and a second open end, opposite to the first, being cupshaped and closed by a lid at least one photoemitter diode, at least one photo-receiver diode and electronic power supply and control means for the diodes, consisting of an electronic board carrying the diodes on-board and fixed to an internal face of the lid facing the first open end in use, and a float accommodated within the tubular body, floating between the first and second open ends, wherein the float has at least one first face made to be only partially reflective and arranged facing the lid, the first face and an internal side surface of the tubular body are white and the float is made of polystyrene

Inventors:
DOBRAVEC KLEMEN (SI)
BICIC BOJAN (SI)
Application Number:
US2009/066752
Publication Date:
July 29, 2010
Filing Date:
December 04, 2009
Export Citation:
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Assignee:
ILLINOIS TOOL WORKS (US)
DOBRAVEC KLEMEN (SI)
BICIC BOJAN (SI)
International Classes:
G01F23/68
Foreign References:
EP0740012B11999-12-01
FR2880422A12006-07-07
JPH10235899A1998-09-08
US5073253A1991-12-17
Attorney, Agent or Firm:
HAUPTMAN, Benjamin, J. (Lowe Hauptman Ham & Berner, LLP1700 Diagonal Road, Suite 30, Alexandria VA, 22314, US)
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