Covering of building opening
AssigneeNien Made Enterprise Co., Ltd.
InventorLin CHEN
Life of this patent
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Abstract
A covering of a building opening includes a rail, a first sash having a guiding slot, a second sash hinged with the first sash and having a center of rotation at an end thereof, a pulley assembly, and a restricting assembly. The pulley assembly is movably received in the rail and has a rod. The rod has a protrusion section extending out of the rail, and the protrusion section enters and leaves the guiding slot while the pulley assembly is moving. The restricting assembly has a moving member and a locking base. The moving member is provided on one of the first sash and the second sash, and the locking base is provided on the other. The moving member is moved by the rod and engages the locking base when the rod leaves the guiding slot.
Claims17
A covering of a building opening, comprising:
- a rail;
- a first sash having a guiding slot;
- a second sash hinged with the first sash and having a center of rotation at an end thereof;
- a pulley assembly movably received in the rail and having a rod, wherein the rod has a protrusion section extending out of the rail, and the protrusion section enters and leaves the guiding slot 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 one of the first sash and the second sash, and the locking base is provided on the other;
- the moving member is moved by the rod and engages the locking base when the rod leaves the guiding slot.
A method of opening a covering of a building opening, wherein the covering comprises a rail, a first sash, and a second sash;
- the first sash is hinged with the second sash;
- the second sash has a center of rotation at an end thereof;
- the first sash and the rail are provided with a rod and a guiding slot respectively;
- the guiding slot has an end opening;
- the rod is able to enter or leave the guiding slot via the end opening;
- and in a close condition the first sash and the second sash extend to close the opening;
- the method comprising the steps of:
- moving the first sash toward the second sash until the first sash and the second sash are folded and substantially perpendicular to the rail, wherein the rod is received in the guiding slot when the first sash and the second sash are folded and substantially perpendicular to the rail;
- continuously moving the first sash and the second sash to turn the first sash and the second sash around the center of rotation until the first sash and the second sash are totally off the opening.
Dependencies are inferred from the claim text.