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:
Aug. 25, 2009
Filed:
Mar. 28, 2006
Chao Duan, Shenzhen, CN;
Chia-hua Chen, Tu-Cheng, TW;
Chao Duan, Shenzhen, CN;
Chia-Hua Chen, Tu-Cheng, TW;
Shenzhen Futaihong Precision Industry Co., Ltd., ShenZhen, Guangdong Province, CN;
Sutech Trading Limited, Tortola, VG;
Abstract
A hinge mechanism includes a shaft (), a cam follower (), a cam (), an antifriction member (), a washer () and an elastic member (). The cam follower is fixed relative to the shaft and has a cam follower surface. The cam has a cam surface () and a cam hole defined therein. The cam is rotatable relative to the cam follower. The shaft runs through the cam, the washer and the elastic member, in turn. The antifriction member has one end touching the cam and an opposite end touching the washer. The cam surface abuts against the cam follower surface due to the elastic force of the elastic member. As the friction coefficient between the antifriction member and washer is smaller than that between the cam and the washer, the hinge mechanism generates a smaller friction therebetween, so the waste of energy is very small.