Patent ID: 7919731
Filing Date: 2011-04-05
Classification: B01F,B01L,H05B

Abstract:
1. A hot plate for supporting a vessel holding a substance to be heated, the hot plate comprising: a plate having a generally horizontal upper surface adapted to support a vessel containing a substance to be heated; an electrical heating element in a heat transfer relation with the plate; a control electrically connected to the heating element; and a control panel electrically connected to the control and including multiple visual displays comprising a hot plate graphic indicator and a multi-character display operable by the control to provide two independent visual indicators that the plate is hot-to-the-touch in response to a temperature of the plate being greater than a first temperature value, wherein the multi-character display is operable by the control to display a temperature of the plate in response to the control applying power to the heating element, and a first message, represented by characters, indicative of the plate being hot in response to the control removing power from the heating element and a temperature of the plate being greater than the first temperature value.