EP 0982973 B2 20090211 - Sensor for cooking vessel detection
Title (en)
Sensor for cooking vessel detection
Title (de)
Sensor zur Kochgefässerkennung
Title (fr)
Capteur pour la détection d'un récipient de cuisson
Publication
Application
Priority
- DE 19603845 A 19960205
- EP 97100766 A 19970118
Abstract (en)
[origin: EP0788293A2] The heater (11) is provided with an inductive detector (31) which operates on the principle of detuning of an oscillatory circuit by the presence of e.g. a saucepan. One or more heating zones (18,19) are switched-on accordingly for a smaller or a larger vessel. The sensor (30) is a single turn of thick wire extending over the heating zones close to the underside of the hotplate. For a twin-circuit heater the loop has precisely shaped peripheral regions (37,38) in these zones so that the signal exhibits a stepped transition between them.
IPC 8 full level
H05B 3/00 (2006.01); H05B 3/74 (2006.01); H05B 1/02 (2006.01); H05B 3/68 (2006.01)
CPC (source: EP US)
H05B 3/746 (2013.01 - EP US); H05B 2213/05 (2013.01 - EP US)
Citation (opposition)
Opponent :
- US 4013859 A 19770322 - PETERS JR PHILIP H
- EP 0553425 A1 19930804 - WHIRLPOOL EUROP [NL]
- J.C. WHITAKER: "The Electronics Handbook", TECHNICAL PRESS, INC., pages: 1343-44
Designated contracting state (EPC)
AT CH DE ES FR GB IT LI SE
DOCDB simple family (publication)
EP 0788293 A2 19970806; EP 0788293 A3 19980107; EP 0788293 B1 20010808; AT E204114 T1 20010815; AT E263475 T1 20040415; DE 19603845 A1 19970807; DE 19603845 B4 20100722; DE 59704217 D1 20010913; DE 59711476 D1 20040506; EP 0982973 A2 20000301; EP 0982973 A3 20000503; EP 0982973 B1 20040331; EP 0982973 B2 20090211; EP 1379105 A2 20040107; EP 1379105 A3 20041103; ES 2162136 T3 20011216; ES 2218941 T3 20041116; ES 2218941 T5 20090601; JP H09223572 A 19970826; US 5893996 A 19990413
DOCDB simple family (application)
EP 97100766 A 19970118; AT 97100766 T 19970118; AT 99123892 T 19970118; DE 19603845 A 19960205; DE 59704217 T 19970118; DE 59711476 T 19970118; EP 03022466 A 19970118; EP 99123892 A 19970118; ES 97100766 T 19970118; ES 99123892 T 19970118; JP 3257297 A 19970203; US 79238397 A 19970203