(19)
(11) EP 0 501 799 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
30.06.1993 Bulletin 1993/26

(43) Date of publication A2:
02.09.1992 Bulletin 1992/36

(21) Application number: 92301656.2

(22) Date of filing: 27.02.1992
(51) International Patent Classification (IPC)5: H05B 3/34
(84) Designated Contracting States:
DE DK GB SE

(30) Priority: 27.02.1991 SU 4914494

(71) Applicant: KIEVSKY ZAVOD "ELEKTROBYTPRIIBOR"
Kiev, Ukraine (SU)

(72) Inventors:
  • Optovets, Vladimir Timofeevich
    Kiev, (UA)
  • Nevstrueva, Natalia Ivanova
    Kiev, (UA)
  • Grffin, Leonid Alexandrovich
    Boyarka, Kievskaya obslast, (UA)
  • Vititin, Viktor Stepanovich
    Kiev, (UA)
  • Stulov, Vladimir Vasilievich
    Yaroslavl, Russia (SU)

(74) Representative: Crawford, Andrew Birkby et al
A.A. THORNTON & CO. Northumberland House 303-306 High Holborn
London WC1V 7LE
London WC1V 7LE (GB)


(56) References cited: : 
   
       


    (54) Woven electric heater


    (57) The woven electric heater comprises warp (1) and weft (2) from electric current-insulating material, interwoven with formation of background (3) and selvage (4). Worked into background (3) is the weft from current-conductive material with formation of heating portions (6) and insulating strips (7). The weft (5) yarn from current-conductive material and the current-carrying strand (8) have complete insulation cover, and their contact is secured by means of commutative elements (9) fixed between the heating portions (6). The warp (1) yarn has length shrinkage with 0.01-5% at 25 to 120 degrees C, while the weft (2) yarn is manufactured from material retaining its geometrical pattern in heating conditions.






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