Global Patent Index - EP 0477858 A3

EP 0477858 A3 19921028 - AN INDUCTANCE COIL DEVICE AND A MANUFACTURING METHOD THEREOF

Title (en)

AN INDUCTANCE COIL DEVICE AND A MANUFACTURING METHOD THEREOF

Publication

EP 0477858 A3 19921028 (EN)

Application

EP 91116235 A 19910924

Priority

  • JP 25708290 A 19900928
  • JP 25708890 A 19900928
  • JP 25912490 A 19900928
  • JP 25913790 A 19900928

Abstract (en)

[origin: EP0477858A2] This invention provides a small sized inductance coil and in particular, provides a small sized flat type inductance coil (11). The inductance coil (11) comprises a coiled electroconductive member (15) having a wide dimension and a narrow dimension in directions intersecting one another in cross section and coiled so that the direction of the wide dimension of said coiled electroconductive member (15) is parallel to a coiling axis of said coiled electroconductive member (15) and that an outline of said coiled electroconductive member (15) is formed in a plane. According to the above structure, the inductance coil (11) does not become so large, because the width of the electroconductive member (15) in the direction which is parallel to the plane is small.

IPC 1-7

H01F 27/28; H01F 41/04

IPC 8 full level

H01F 27/28 (2006.01); H01F 41/04 (2006.01)

CPC (source: EP)

H01F 27/2823 (2013.01); H01F 27/2828 (2013.01); H01F 41/04 (2013.01)

Citation (search report)

  • [X] US 3787766 A 19740122 - GRAEFNITZ R, et al
  • [X] DE 1414928 A1 19681003 - PHILIPS NV
  • [A] US 4494100 A 19850115 - STENGEL ROBERT E [US], et al
  • [A] EP 0244923 A2 19871111 - CENTURY ELECTRIC INC [US]
  • [XP] PATENT ABSTRACTS OF JAPAN vol. 15, no. 233 (E-1077)14 June 1991 & JP-A-3 070 109 ( SONY CHEM ) 26 March 1991
  • [A] PATENT ABSTRACTS OF JAPAN vol. 5, no. 44 (E-50)(716) 24 March 1981 & JP-A-55 166 913 ( WEST DENKI )
  • [A] PATENT ABSTRACTS OF JAPAN vol. 10, no. 337 (E-454)(2393) 14 November 1986 & JP-A-61 142 721 ( MATSUSHITA ELECTRIC ) 30 June 1986
  • [A] PATENT ABSTRACTS OF JAPAN vol. 5, no. 66 (E-55)2 May 1981 & JP-A-56 017 006 ( MEIJI NATL IND ) 18 February 1981

Designated contracting state (EPC)

DE FR

DOCDB simple family (publication)

EP 0477858 A2 19920401; EP 0477858 A3 19921028

DOCDB simple family (application)

EP 91116235 A 19910924