Title:
ELECTRICAL HEATER WITH THERMISTOR
Document Type and Number:
WIPO Patent Application WO2002032188
Kind Code:
A3
Abstract:
An electrical heater having a plurality electrodes disposed adjacently on a substrate in spaced apart relation and interconnected by a thermistor material, for example a positive temperature coefficient material. The electrodes each have at least one end portion and preferably two opposite end portions coupled to corresponding electrical terminal located at a common termination zone on the substrate. A spacing between adjacent electrodes may vary and adjacent electrodes may include interdigitated portions to vary the heat produced on selected portions of the substrate.
Inventors:
BULGAJEWSKI EDWARD
SHARP LARRY L (US)
SHARP LARRY L (US)
Application Number:
PCT/US2001/030453
Publication Date:
July 11, 2002
Filing Date:
September 28, 2001
Export Citation:
Assignee:
ILLINOIS TOOL WORKS (US)
SHARP LARRY L (US)
SHARP LARRY L (US)
International Classes:
H05B3/03; H05B3/14; H05B3/26; H05B3/34; (IPC1-7): H05B3/26; H05B3/34
Domestic Patent References:
| WO2000043225A2 | 2000-07-27 |
Foreign References:
| GB2162409A | 1986-01-29 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 10 31 August 1999 (1999-08-31)
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