The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 27, 2021
Filed:
Dec. 16, 2016
Leafy Windoware Co., Ltd., Dongguan, CN;
Zhenbang Lei, Shenzhen, CN;
Xingbang Lei, Shenzhen, CN;
Leafy Windoware Co., Ltd., Dongguan, CN;
Abstract
A pull-cord control device for a curtain without an operation cord includes a pull-cord (), a base (), and a pressing plate () rotatably mounted to the base through a rotation shaft (). The base forms first friction shafts (). The pressing plate forms second friction shafts () staggered with the first friction shafts. The pressing plate forms a fixing pole (). A first end of the pull-cord is connected to a retractable-cord device (), and a second end of the pull-cord extends between the first and second friction shafts, and is connected to a curtain body () after extending about the fixing pole. When the curtain body moves up and down, the pressing plate is rotated between a clamping position and a loose position. When the pressing plate is in the clamping portion, the second friction shafts actuate the pull-cord to wander between the first and second friction shafts.