EP 1422972 B1 20091209 - Shielded PCT heating element
Title (en)
Shielded PCT heating element
Title (de)
Abgeschirmtes PCT-Heizelement
Title (fr)
Elément chauffant blindé à effet CTP
Publication
Application
Priority
FR 0213251 A 20021023
Abstract (en)
[origin: US2004084439A1] A heating element for an electric appliance for heating or cooking foods. The heating element is composed of: a tubular metal envelope; and a resistance wire encased in an insulator disposed at the interior of the tubular envelope. The wire is composed of nickel and iron as the two principal elements, and has a temperature coefficient alpha greater than 1500 ppm/° C. The wire may be wound in a spiral and the outer diameter of the spiral is greater than 0.7 times the inner diameter of the tubular envelope.
IPC 8 full level
H05B 3/48 (2006.01); H05B 3/12 (2006.01); H05B 3/68 (2006.01)
CPC (source: EP US)
H05B 3/48 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2004084439 A1 20040506; US 6919542 B2 20050719; AT E451814 T1 20091215; CN 100479624 C 20090415; CN 1498037 A 20040519; DE 60330431 D1 20100121; EP 1422972 A1 20040526; EP 1422972 B1 20091209; FR 2846509 A1 20040430; FR 2846509 B1 20060317; TW 200414789 A 20040801
DOCDB simple family (application)
US 68973403 A 20031022; AT 03356160 T 20031020; CN 200310102563 A 20031023; DE 60330431 T 20031020; EP 03356160 A 20031020; FR 0213251 A 20021023; TW 92128532 A 20031015