Window covering

Patent metadata

Field	Value
Publication number	US-9255443-B2
Application number	US-201314086016-A
Country	US
Kind code	B2
Filing date	Nov 21, 2013
Priority date	Nov 21, 2013
Publication date	Feb 9, 2016
Grant date	Feb 9, 2016

Abstract

A window covering includes a headrail, a bottom rail, a shading member, two pulley assemblies, and a cord. The shading member is between the headrail and the bottom rail. The pulley assemblies are received in the headrail, each of which has a frame and a pulley. The frame has an opening, and the pulley is connected to the frame. The cord is a woven Y-shaped cord, having a single control section and two lift sections. The cord runs over the pulleys of the pulley assemblies, the single control section extends out of the headrail to be operated by a user, and the lift sections extend out of the frames via the openings respectively to connect to the bottom rail through the shading member.

First claim

What is claimed is:

1. A window covering, comprising:
a headrail;
a bottom rail;
a shading member between the headrail and the bottom rail;
two pulley assemblies received in the headrail, each of which has a pulley; and
a cord, which runs over the pulleys of the pulley assemblies, having a single control section and at least two lift sections, wherein the single control section has a first end and a second end, and the second end is connected to an end of each of the at least two lift sections; the single control section extends out of the headrail to be operated by a user to expand or collapse the shading member, and the at least two lift sections extend out of the headrail respectively to connect to the bottom rail through the shading member; the second end of the single control section is always inside the headrail no matter whether the shading member is expanded or collapsed;
wherein the single control section runs over each of the pulleys of the pulley assemblies more than once in the headrail when the shading member is expanded.

2. The window covering of claim 1 , wherein the cord is a woven Y-shaped cord having a trunk section and two branch sections; and the trunk section forms the single control section, and the branch sections form the lift sections respectively.

3. The window covering of claim 1 , wherein the cord has at least two bands; a first part of each of the at least two bands is connected together to form the single control section, and a remainder part of each of the at least two bands forms one of the at least two lift sections respectively.

4. The window covering of claim 1 , wherein the at least two lift sections are connected to the single control section by sewing, knotting, bonding, or gluing.

5. The window covering of claim 1 , wherein the at least two lift sections comprise a first lift section and a second lift section; the cord has a main cord and a branch cord connected to a predetermined point of the main cord so that the main cord is divided into two sections by the predetermined point, wherein one of the two sections of the main cord forms the single control section, while the other one of the two sections forms the first lift section, and the branch cord forms the second lift section.

6. The window covering of claim 1 , wherein each pulley assembly further includes a frame; the frame is connected to the headrail, and the pulley is connected to the frame.

7. The window covering of claim 6 , wherein the frame has an opening through which one of the lift sections pass.

8. The window covering of claim 1 , wherein the cord further has a connector, and the second end of the single control section and the at least two lift sections are connected to the connector.

9. The window covering of claim 8 , wherein the connector is a ring.

Assignees

• Nien Made Entpr Co Ltd

Inventors

• Chang Chih-Yao

Classifications

• E06B9/307

  Details of tilting bars and their operation · CPC title

• E06B9/32 Primary

  Operating, guiding, or securing devices therefor (operation of tilting bars E06B9/307) · CPC title

• E06B9/306

  with tilting bar along which the raising cords are guided · CPC title

• E06B9/303

  with ladder-tape · CPC title

• E06B2009/2627

  Cellular screens, e.g. box or honeycomb-like · CPC title