| (19) |
 |
|
(11) |
EP 0 384 640 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
18.03.1992 Bulletin 1992/12 |
| (43) |
Date of publication A2: |
|
29.08.1990 Bulletin 1990/35 |
| (22) |
Date of filing: 15.02.1990 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE DK ES FR GB GR IT LI LU NL SE |
| (30) |
Priority: |
20.02.1989 GB 8903829
|
| (71) |
Applicant: EMACO LTD. |
|
Luton
Bedfordshire LU4 9QQ (GB) |
|
| (72) |
Inventor: |
|
- Buttery, Michael H.
Tadworth,
Surrey, KT20 7 QE (GB)
|
| (74) |
Representative: Arthur, Bryan Edward et al |
|
Withers & Rogers
4 Dyer's Buildings
Holborn
London EC1N 2JT
London EC1N 2JT (GB) |
|
| |
|
| (54) |
Improvements in electric hotplates |
(57) An electric hotplate is described having a laminated structure in which the heating
element comprises strips of resistive material R on an insulating substrate. The strips
are connected in a series parallel arrangement between conductors A, X, Y, Z and B.
The interconnecting conductors X, Y and Z may be of a material having a negative temperature
co-efficient of resitivity.