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:
Jun. 10, 2014
Filed:
Mar. 15, 2012
Po-yang Chen, Chiayi, TW;
Kai-ting Tung, Chiayi, TW;
Yu-ting Huang, Chiayi, TW;
Chia-min Sun, Chiayi, TW;
Song-gen Shyu, Chiayi County, TW;
Ching-chuan Kuo, Chiayi County, TW;
Po-Yang Chen, Chiayi, TW;
Kai-Ting Tung, Chiayi, TW;
Yu-Ting Huang, Chiayi, TW;
Chia-Min Sun, Chiayi, TW;
Song-Gen Shyu, Chiayi County, TW;
Ching-Chuan Kuo, Chiayi County, TW;
Tong Lung Metal Industry Co., Ltd., Chia-Yi, TW;
Abstract
In a handle-returning device of a cylinder lock assembly, a support base has an inner annular flange and an axial spring-retaining lug. A rotation driver has an inner tubular wall extending into the inner annular flange of the support base, and a spring driving element. A torsion spring is disposed around the inner annular flange and between the support base and the rotation driver, and has a spring leg abutting the spring-retaining lug and the spring driving element. A rotary plate abuts the support base opposite to the rotation driver, and has an engaging part engaging a tongue projecting from the rotation driver. A reinforced structure is thus provided to oppose high torsional stresses produced upon rotation of a lever handle.