Patent ID: 7449154
Filing Date: 2008-11-11
Classification: A01M,A01N,A61L

Abstract:
1. A chemical heating, volatilizing apparatus comprising: a heater element; a chemical containing body, which contains a heat volatilizing chemical; a chemical containing body retaining receptacle, which is loadable in the apparatus to be on or above the heater element, and which comprises at least one vent hole and which accommodates and retains the chemical containing body therein such that the chemical containing body is supported on a lower inner portion of the chemical containing body retaining receptacle and such that an upper inner surface of the chemical containing body retaining receptacle is spaced apart from an upper surface of the chemical containing body by a distance of 1 to 10 mm; an indicator which indicates a stage of service of the heat volatilizing chemical from a start point to an end point of the service, and which comprises a first mark which changes from visible to invisible and a second mark that changes from invisible to visible simultaneously with the change of the first mark, due to color changes brought about by an irreversible reaction due to heating, so as to indicate the stage of service.