Global Patent Index - EP 0844626 A4

EP 0844626 A4 2000-03-29 - TRANSFORMER

Title (en)

TRANSFORMER

Title (de)

TRANSFORMATOR

Title (fr)

TRANSFORMATEUR

Publication

EP 0844626 A4 (EN)

Application

EP 97919797 A

Priority

  • RU 9700110 W
  • RU 96106791 A
  • RU 97101702 A

Abstract (en)

[origin: WO9739463A1] A number of types of transformer are proposed for possible use as basic electrical equipment in power stations, substations, power transmission lines, in radio engineering, and in measurement and automatic control and regulation systems. The invention is based on the principle that the primary coil comprises two sections wound and connected to one another in such a way that the magnetic flux generated by one such section when the transformer is in operation balances the magnetic flux generated by the other section. The transformer contains a magnetic circuit and a primary coil in two sections wound onto the circuit core in one direction with the same number of turns. The two coil sections are connected at their ends while the starts of the windings serve as power source inputs. The secondary coil is wound over the primary coil on the same magnetic circuit core, and a load RH is connected to it. The proposed transformer variants are characterised by the fact that the primary coil sections are wound onto one magnetic circuit core (3 variants) or onto two cores of one magnetic circuit (4 variants), by the respective winding directions (identical or opposite) of the sections and thus by the different coil connections, and also by the presence of a secondary coil (absent in one variant).

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

H01F 30/06; H01F 27/28

IPC 8 full level (invention and additional information)

H01F 27/28 (2006.01); H01F 30/00 (2006.01); H01F 30/06 (2006.01); H01F 30/10 (2006.01)

CPC (invention and additional information)

H01F 30/10 (2013.01); H01F 30/06 (2013.01)

Citation (search report)

Designated contracting state (EPC)

CH DE DK FI FR GB GR LI NL SE

EPO simple patent family

WO 9739463 A1 19971023; CA 2224708 A1 19971023; CA 2224708 C 20060124; DE 69739888 D1 20100708; EP 0844626 A1 19980527; EP 0844626 A4 20000329; EP 0844626 B1 20100526; JP H11508414 A 19990721

INPADOC legal status


2015-02-27 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: FR

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20140430

2015-01-30 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: DE

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20141101

2015-01-23 [REG FR ST] NOTIFICATION OF LAPSE

- Effective date: 20141231

2015-01-22 [REG DE R119] APPLICATION DEEMED WITHDRAWN, OR IP RIGHT LAPSED, DUE TO NON-PAYMENT OF RENEWAL FEE

- Document: DE 69739888

- Effective date: 20141101

2014-11-01 [REG DE R119] APPLICATION DEEMED WITHDRAWN, OR IP RIGHT LAPSED, DUE TO NON-PAYMENT OF RENEWAL FEE

- Document: DE 69739888

2013-08-30 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: FR

- Payment date: 20130515

- Year of fee payment: 17

2013-07-31 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Payment date: 20130419

- Year of fee payment: 17

2012-02-29 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: GB

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20110410

2012-01-31 [PG25 CH] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: CH

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20110430

2012-01-31 [PG25 LI] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: LI

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20110430

2011-12-28 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20110410

2011-11-30 [REG CH PL] PATENT CEASED

2011-06-16 [REG DE R097] NO OPPOSITION FILED AGAINST GRANTED PATENT, OR EPO OPPOSITION PROCEEDINGS CONCLUDED WITHOUT DECISION

- Document: DE 69739888

- Effective date: 20110228

2011-05-31 [PG25 GR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: GR

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20100827

2011-05-04 [26N] NO OPPOSITION FILED

- Effective date: 20110301

2011-01-31 [PG25 DK] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: DK

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20100526

2011-01-31 [PG25 NL] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: NL

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20100526

2010-11-30 [PG25 FI] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: FI

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20100526

2010-10-29 [PG25 SE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: SE

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20100526

2010-09-15 [REG NL VDEP] INVALID IN THE NETHERLANDS AS NO TRANSLATION HAS BEEN FILED

- Effective date: 20100526

2010-07-08 [REF] CORRESPONDS TO:

- Document: DE 69739888 P 20100708

2010-05-31 [REG CH EP] ENTRY IN THE NATIONAL PHASE

2010-05-26 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): CH DE DK FI FR GB GR LI NL SE

2010-05-26 [REG GB FG4D] EUROPEAN PATENT GRANTED

2003-05-28 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030415

2000-03-29 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20000210

2000-03-29 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): CH DE DK FI FR GB GR LI NL SE

1998-05-27 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19971212

1998-05-27 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): CH DE DK FI FR GB GR LI NL SE