KEYSTONE CLOSED SUPPORTING FRAME, IN PARTICULAR FOR REHABILITATION TOOLS

摘要

The support frame has a straight tubular piece (1) forming the bottom base line. The support frame has two tubular corner pieces (2,2') angled at an angle extending the angle of the tubular piece (5) to 180 degrees. The tubular corner pieces are telescopically interconnected by one of their arms (3,3') to the straight tubular piece to form the base line, and by their other arm (4,4') to the angled end parts (6,6') of the angled tubular piece to form the sides. At least one overlapping part between the straight and corner tubular pieces and/or the end of the angled tubular piece and corner piece arms has longitudinal markings and is fixed in position. IMAGE