Global Patent Index - EP 1255421 A2

EP 1255421 A2 2002-11-06 - Induction cooking apparatus with improved characteristics

Title (en)

Induction cooking apparatus with improved characteristics

Title (de)

Induktionskochvorrichtung mit verbesserten Merkmalen

Title (fr)

Dispositif de cuisson à induction possédant des caractéristiques améliorées

Publication

EP 1255421 A2 (EN)

Application

EP 02007362 A

Priority

IT MI20010910 A

Abstract (en)

An induction cooking apparatus (1), comprising an inductor element (10) driven by an inverter (7), which is in turn controlled by a control circuit (6), resonance capacitors (11) being connected in parallel to the inductor element (10); the apparatus further comprises a real-time control unit (5) suitable to detect the resonance current of a resonance circuit constituted by the inductor element (10) and by the resonance capacitors (11), and the phase current of the power supply line, in order to send, at each half-cycle of the fundamental wave, a driving signal for the control circuit in order to ensure a perfect resonance condition. <IMAGE>

IPC 1-7 (main, further and additional classification)

H05B 6/06

IPC 8 full level (invention and additional information)

H05B 6/04 (2006.01); H05B 6/06 (2006.01)

CPC (invention and additional information)

H05B 6/062 (2013.01); H05B 6/04 (2013.01)

Citation (applicant)

IT 1000910 A

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

EP 1255421 A2 20021106; EP 1255421 A3 20030924; IT MI20010910 A1 20021104; IT MI20010910 D0 20010503

INPADOC legal status


2005-03-16 [18W] WITHDRAWN

- Effective date: 20050120

2004-09-08 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20040723

2004-06-16 [AKX] PAYMENT OF DESIGNATION FEES

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2004-04-28 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20040224

2003-09-24 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2003-09-24 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Countries: AL LT LV MK RO SI

2002-11-06 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2002-11-06 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI