Electric heating – Heating devices – With heating unit structure
Patent
1986-01-14
1989-01-31
Hartary, Joseph W.
Electric heating
Heating devices
With heating unit structure
219548, 219541, 219553, 338306, H05B 308
Patent
active
048017850
ABSTRACT:
Improvements to electrical devices comprising conductive polymer compositions are described. The device, preferably a heater, comprises two electrodes, preferably planar electrodes and a conductive polymer composition, which preferably exhibits PTC behavior, and which is preferably sandwiched between the electrodes. At least one of the electrodes comprises a metal with a thin layer of high resistivity material attached thereto, e.g. anodized aluminum, so that the layer separates the electrode and the conductive polymer composition. This raises the room temperature resistance of the device and thus reduces the in-rush current.
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Barma Pradeep
Chan Chi-Ming
Chazan David
Liu David
Burkard Herbert G.
Hartary Joseph W.
Lateef M. M.
Raychem Corporation
Richardson Timothy H. P.
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