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:
Mar. 27, 2012
Filed:
Mar. 04, 2010
Chia-hui Chen, Taoyuan, TW;
Jih-nan Tai, Taoyuan, TW;
Chia-ming Chang, Taoyuan, TW;
Tzu-yu Lin, Taoyuan, TW;
Chia-Hui Chen, Taoyuan, TW;
Jih-Nan Tai, Taoyuan, TW;
Chia-Ming Chang, Taoyuan, TW;
Tzu-Yu Lin, Taoyuan, TW;
Lianhong Art Co., Ltd., Taoyuan, TW;
Abstract
A two-stage torsion pivot hinge including an axle connected with a base and having a shaft mounted thereon with a bush for a spring tube. The bush forms a first and a second protrusion element respectively extending out of its two ends. The spring tube is fixedly connected with a supporting member and is provided with two torsion sleeves respectively on the two ends of the bush. Each torsion sleeve has an axial cut and has two contact elements extending respectively toward the two ends of the bush. The contact elements respectively interfere with the first and the second protrusion elements. By the function between the torsion sleeve and the bush, the pivot hinge can provide different torsion forces for the stroke of rotating the screen from its closed position to a vertical angular position and for the stroke from the vertical position to its maximum opening angular position.