Full Title

Window sashes, door leaves, or like elements for closing openings; Layout of fixed or moving closures, e.g. windows ; Features of rigidly-mounted outer frames relating to the mounting of wing frames (E06B5/00 takes precedence; shutters or the like E06B9/00; glass panes C03) > Corner joints or edge joints for windows, doors, or the like frames or wings > using separate connection pieces, e.g. T-connection pieces (E06B3/9604 - E06B3/9636 and E06B3/984 - E06B3/99 take precedence) > characterised by the way the connecting pieces are fixed in or on the frame members > by increasing the cross-section of the connecting pieces, e.g. by expanding the connecting pieces with wedges (E06B3/976 takes precedence)