Door and method of making same

Claim 1

A rectangular door having front and rear sheet metal panels in spaced relation, a core portion sandwiched between said sheet metal panels and on which the outer peripheries of said sheet metal panels are mounted, said core portion including wooden members defining the top, bottom and vertical side edges thereof and thermal sound insulation material retained within the confines of said wooden members and sheet metal panels, said wooden members having rear and front surfaces, the outer peripheries of said sheet metal panels covering the rear and front surfaces of said wooden members and terminating at the outer peripheries of said surfaces, and metallic extrusions defining U-shaped channel members with elastic properties extending around and enclosing in engaged relationship the outer peripheries of said sheet metal panels and the wooden members sandwiched therebetween, each of said channel members having a transverse base and a pair of side walls extending inwardly perpendicular to said base and in parallel relation to define the U-shaped portion of the channel member and having a flange extending outwardly from said transverse base to provide in cooperation with the latter marginal recess for fitting into a door frame, and the channel member enclosing one vertical edge of the core portion extending the full length thereof and being cambered in the transverse direction of said base in an essentially unstressed condition so that it is concave in the rearward direction of the door when the latter is open and so that it is substantially straight in a stressed condition when the door is closed in said door frame, the channel member enclosing the other vertical edge being straight when in an unstressed condition, and a continuous sealing strip secured to the rear surface of said flange for engagement with said door frame