Patent ID: 6756567
Filing Date: 2004-06-29
Classification: F27B

Abstract:
An apparatus for melting paraffin wax comprising:an integral plastic inner tub comprising: a first flat bottom having a first periphery; a first sloped wall extending upward from the first periphery forming an open top having a second periphery; and first attachment points attached to the flat bottom; an integral aluminum plate holder comprising: a second flat bottom having a third periphery; a second sloped wall extending upward from the third periphery and adapted so that the first sloped wall fits within the second sloped wall; and second attachment points attached to the second flat bottom; wherein the second attachment points are removably attached to the first attachment points; and a positive temperature coefficient heating element coupled to the second bottom for providing self regulation to a preset temperature, the positive temperature coefficient heating element autonomously varying an positive temperature coefficient heating element electrical resistance in response to a temperature of the positive temperature coefficient heating element thereby varying a power dissipation of the positive temperature coefficient heating element in order to maintain the positive temperature coefficient heating element at the preset temperature; wherein heat from the positive temperature coefficient heating element is transferred from the integral aluminum plate holder to the integral plastic inner tub via the first and second flat bottoms and first and second sloped walls thereby melting any wax inside said integral plastic inner tub; and the first sloped wall comprises an integral first alignment key; the second sloped wall comprises an integral second alignment key for aligning the integral aluminum plate holder with the integral plastic inner tub; a support mounted to the integral aluminum plate holder and aligned with the integral first and second alignment keys; and a variable thermostat for setting the preset temperature mounted to the support and coupled to the positive temperature coefficient heating element.