Patent ID: 7112766
Filing Date: 2006-09-26
Classification: A47J,C09K,F24C,H05B

Abstract:
1. A heat alert safety device attachable to a surface for warning individuals that the surface is hot, comprising: a thermochromic composition, a container for housing said composition and having a convex face, said face overlying said composition and said container being transparent in at least a portion of the container overlying the thermochromic composition, said container made of a heat conductive material, the thermochromic composition designed to undergo and maintain a readily perceptible color change whenever the temperature of the hot surface exceeds a predetermined temperature, said color change revealing a heat warning symbol that communicates that the surface is dangerously hot, an attachment element made of a heat conductive material and bonded to said container, said attachment element being attachable to a surface which may become hot, the convex face being substantially visible through an angle of incidence of at least 90 degrees, the container and the attachment element together forming a circular shape.