Global Patent Index - EP 0979593 A1

EP 0979593 A1 2000-02-16 - HEATING ELEMENT AND METHOD OF MANUFACTURE

Title (en)

HEATING ELEMENT AND METHOD OF MANUFACTURE

Title (de)

HEIZELEMENT UND SEINEM HERSTELLUNGSVERFAHREN

Title (fr)

ELEMENT CHAUFFANT ET SON PROCEDE DE PRODUCTION

Publication

EP 0979593 A1 (EN)

Application

EP 97940706 A

Priority

  • US 9715291 W
  • US 70552796 A
  • US 85559597 A

Abstract (en)

[origin: WO9809478A1] A soft and flexible thin heating element made of electrically conductive carbon carrying fabric is impregnated with a soft filling material. The heating element (29) is shaped by curing the soft filling material and cutting the treated fabric into a desired pattern. The electrical contacts (15) are attached to the ends of the serpentine strips which are electrically connected in parallel or in series. The fabric heating element core (29) is sealed to form a multi-layer assembly having at least two electrically insulating layers (12) which envelop each strip of the heating element core. The heating element is made of non-metallic yarns containing electrically conductive carbon/graphite containing fibers which are woven or stranded into the strips, ropes, sleeves or strands of threads. The selected areas of the heating element core are modified to impart additional electrical properties. An optional positive temperature coefficient (PTC) material is incorporated into said selected areas.

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

H05B 1/00; H01C 17/00; H01C 17/06; H05B 3/00; H05B 3/06; H05B 3/10; H05B 3/16; H05B 3/34

IPC 8 full level (invention and additional information)

H05B 3/20 (2006.01); A41D 13/005 (2006.01); H01C 1/148 (2006.01); H01C 7/00 (2006.01); H01C 17/00 (2006.01); H05B 3/14 (2006.01); H05B 3/34 (2006.01); H05B 3/36 (2006.01)

CPC (invention and additional information)

H01C 1/148 (2013.01); A41D 13/0051 (2013.01); H01C 7/00 (2013.01); H01C 17/00 (2013.01); H05B 3/145 (2013.01); H05B 3/342 (2013.01); H05B 2203/002 (2013.01); H05B 2203/003 (2013.01); H05B 2203/004 (2013.01); H05B 2203/005 (2013.01); H05B 2203/011 (2013.01); H05B 2203/014 (2013.01); H05B 2203/017 (2013.01); H05B 2203/026 (2013.01); H05B 2203/028 (2013.01); H05B 2203/029 (2013.01); H05B 2203/036 (2013.01)

Designated contracting state (EPC)

AT BE DE ES FI FR GB IT

EPO simple patent family

WO 9809478 A1 19980305; CA 2236024 A1 19980305; CA 2236024 C 20010123; EP 0979593 A1 20000216; EP 0979593 A4 20010404; IL 121654 A 20030706; IL 121654 D0 19980222; JP 2001525104 A 20011204

INPADOC legal status


2004-09-01 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20040302

2001-04-04 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20010215

2001-04-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): AT BE DE ES FI FR GB IT

2000-02-16 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990329

2000-02-16 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE DE ES FI FR GB IT