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. 17, 2012
Filed:
Nov. 03, 2009
Yu-ting Kao, Sinshih Township, Tainan County, TW;
Yu-Ting Kao, Sinshih Township, Tainan County, TW;
Uni-Soleil Ent. Co., Ltd., Tainan County, TW;
Abstract
A roll screen control member is revealed. The roll screen control member consists of a sprocket wheel, a chain protection cover, a sprocket support, a cover spring, a splined bush and a central pin. The splined bush is mounted with a roll screen tube while the central pin includes a central pin head with a plurality of cutting surfaces. After the central pin being locked into the sprocket support, each cutting surface of the central pin is corresponding to each cutting surface on the sprocket support. When a chain is pulled, due to the precise locking between the central pin and the sprocket support, splined bush is moved along with the cover spring so as to drive the roll screen tube to rotate along with the movement and further control extension or retraction of the roll screen.