Patent ID: 7232012
Filing Date: 2007-06-19
Classification: E06B

Abstract:
1. An elevator shaft door having a door panel with a closing edge, wherein the door panel includes a front wall and a back wall, which walls are spaced apart and connected together by thermally releasable connecting means, comprising: a profile member thermally non-detachably fastened to the back wall of the door panel and forming a rearward portion of the closing edge of the door panel and forming a rearward door gap with an adjacent closing edge when the door is in a closed state; and a portion of the front wall forming a forward portion of the closing edge of the door panel whereby due to a heating of the door panel, the back wall including said rearward portion of the closing edge is at least partially separated from the front wall and due to the heating the front wall curves and the back wall including the rearward portion of the closing door edge substantially retains the rearward door gap unchanged.