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:
May. 22, 2012
Filed:
Mar. 20, 2008
Cheng-chung Liu, Chiayi County, TW;
Lan-kun Don, Chiayi, TW;
Cheng-Chung Liu, Chiayi County, TW;
Lan-Kun Don, Chiayi, TW;
Tong Lung Metal Industry Co., Ltd., Chia-Yi, TW;
Abstract
A cylinder lock includes a shell that has an enlarged tubular section, and a constricted tubular section. A retractor case that contains a latch retractor for retracting a latch is disposed within the enlarged tubular section. An inner surface of the enlarged tubular section is provided with an interlocking unit that interlocks with the retractor case to prevent relative rotational movements of the retractor case and the shell. In an embodiment, the retractor case has at least one tongue extending radially between a pair of annularly spaced apart interlocking elements of the interlocking unit.