Patent ID: 8269147

Claim:
Hotplate ( 10 ) comprising: a metal plate part ( 11 ) having an upper side ( 16 ) on which an object ( 7 ) to be kept hot can be placed, a lower side ( 17 ) and having a plate edge ( 24 ) defining the circumference of the plate ( 11 ), an electric heating element ( 15 ) fixed on the lower side ( 17 ) of the plate part ( 11 ) and equipped for heating said plate part ( 11 ), a ring ( 31 ) of electrically insulating plastic, having at an outer surface a snap connection ( 29 , 30 ) for engaging with a hole edge ( 28 ) of a substantially circular hole ( 13 ) in a housing ( 2 ), characterised in that, the ring is formed of a plastic material having a Shore hardness on scale A of between 55 and 85, the ring having a tapering outer edge tapering downwards for engaging with the hole edge ( 28 ) of corresponding taper in a fluid-tight manner, the ring being provided along an inner surface with a circular groove ( 26 ) bounded on three sides by the ring material for receiving a circular plate edge ( 24 ) being received in said groove ( 26 ) in a watertight manner.