DOOR Russian patent published in 1997 - IPC

FIELD: construction industry. SUBSTANCE: door has framework, outside sheeting, internal bars which determine thickness of door and are used for installing door hardware, and trimming frames made of wooden lathes. Framework is made of rods 15, 17 and their ends are fastened on strips 18 connected with frame 1. Lathes of trimming frame are provided with splits 6, 7, and angle joints of frame 1 are reinforced by gussets located inside. Gussets are of box section. Free internal space of framework is filled with light-weight material 23. External sheeting is made up of several sections 8, 9, 10 fixed over supporting perimeter. Additional parts of sheeting supporting perimeter are formed by lateral braces 12 secured on strips 13 with holes. Splits of trimming framework wooden lathes are located in different planes. Blanks of gussets 11 are flat. EFFECT: simplified technology for utilizing small-size woodworking waste. 2 cl, 9 dwg