EP 1009196 A1 20000614 - PLANAR HEATING ELEMENT
Title (en)
PLANAR HEATING ELEMENT
Title (de)
FLAECHENHEIZELEMENT
Title (fr)
ELEMENT CHAUFFANT PLANAR
Publication
Application
Priority
JP 9700052 W 19970113
Abstract (en)
A sheet-shaped heater is structured by attaching plural electrode covering members 4, each covering electrodes 3, on a sheet-shaped heating resistance sheet 2 to have a predetermined space from each other. At least an area adjacent to the electrode 3 is a PTC layer having positive temperature coefficient characteristics which show increasing electric resistance value with rise in temperature. The heating resistance sheet 2 does not have the positive temperature coefficient characteristics or has the positive temperature coefficient characteristics of which, in a range below the temperature showing the maximum kick-off increase ratio of the PTC layer, the kick-off increase ratio is smaller than that of the PTC layer or the kick-off temperature is higher than that of the PTC layer. <IMAGE>
IPC 1-7
IPC 8 full level
H05B 3/12 (2006.01); H05B 3/14 (2006.01); H05B 3/20 (2006.01); H05B 3/24 (2006.01); H05B 3/28 (2006.01)
CPC (source: EP)
H05B 3/12 (2013.01); H05B 3/14 (2013.01); H05B 3/145 (2013.01); H05B 3/146 (2013.01); H05B 3/20 (2013.01); H05B 3/24 (2013.01); H05B 3/28 (2013.01); H05B 2203/02 (2013.01)
Citation (search report)
See references of WO 9831196A1
Designated contracting state (EPC)
DE FI FR GB IT NL SE
DOCDB simple family (publication)
EP 1009196 A1 20000614; AU 1398297 A 19980803; CA 2256616 A1 19980716; WO 9831196 A1 19980716
DOCDB simple family (application)
EP 97900419 A 19970113; AU 1398297 A 19970113; CA 2256616 A 19970113; JP 9700052 W 19970113