DOOR FRAME Russian patent published in 1995 - IPC

FIELD: civil engineering. SUBSTANCE: door frame is attached in door aperture to its sides using fastening members made in the form of cantilevers comprising plates 4 and 5 connected to one another by hinge 6. Plate 4 is fixed on door frame using a fastening member in the form of bolt 7 and nut 8. The cantilever is suitable for reciprocation along slot 9 made in door frame 1 when fastening member is loosened. Plate 5 is suitable for revolving using hinge 6 about plate 3, and is installed parallel about the plane of side 3 of door aperture. Plane 5 is fixed to the side of door aperture using dowels and self- tapping screws 11. Fastening member is covered with protecting cap secured from inside of the door aperture to avoid its removal. Frame cases 13 are used to decorate protective caps from outside. EFFECT: highly reliable door. 4 dwg