WINDOW OF WHICH OPENING/CLOSING INTERVAL IS REGULATED

摘要

PURPOSE: A window of which an opening/closing interval is regulated is provided to open the window more widely by positioning a locking device in the center of an overlapped part between two windows upon opening the door. CONSTITUTION: An upper part of outer and inner doors(10,20) is opened a little. A recessed groove(11) is formed at the bottom of the outer door. A vent hole(21) is punched in a position corresponding to the recessed groove upon opening the outer and inner doors a certain degree. A locking device(30) is installed in the vent hole and is rotatable around shaft.