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US 2013/0220044 A1Published application
Slat controller of window blind
AssigneeNien Made Enterprise Co., Ltd.
InventorsYu-Che Wen, Chih-Yao Chang
Life of this patent
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Abstract
A slat controller for a window blind has a gear, a worm member, and a connector. The gear connects to slats through cords, and the worm member having spiral teeth meshed with the gear. The connector has flexible arms, and the flexible arms have teeth. The worm member has teeth normally engaging the teeth of the connector, and the teeth of the worm member disengage the teeth of the connector to protect the meshed gear and the worm member when the user keeps turning the tilting rod beyond the allowable turning range.
Claims14
A slat controller for a window blind, comprising:
- a gear connecting to slats through cords;
- a worm member having a spiral tooth meshed with the gear and teeth;
- and
- a connector having teeth;
- wherein the teeth of the worm member normally engage the teeth of the connector, and the teeth of the worm member disengage the teeth of the connector when the gear and the worm member are unable to turn and the connector is turned.
2 more elements
Dependencies are inferred from the claim text.