Patent ID: 9032588
Filing Date: 2015-05-19
Classification: E05D,E05Y,E06B,Y10T

Abstract:
1. A covering of a building opening, comprising: a rail; a first sash having a guiding slot which has an end opening; a second sash hinged with the first sash with an end thereof, wherein the second sash pivots with another end thereof as a center of pivoting; a pulley assembly movably received in the rail and having a rod, wherein the rod has a protrusion section exposed out of the rail, and the protrusion section enters and leaves the guiding slot through the end opening while the pulley assembly is moving; and a restricting assembly having a moving member and a locking base, wherein the moving member is provided on either the first sash or the second sash, and the locking base is correspondingly provided on the other; the moving member is contacted and moved by the rod to engage the locking base when the protrusion section of the rod leaves the guiding slot.