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. 19, 2018
Filed:
Mar. 17, 2017
Jarllytec Co., Ltd., New Taipei, TW;
Yu-Tsun Hsu, New Taipei, TW;
JARLLYTEC CO., LTD., New Taipei, TW;
Abstract
A laborsaving rotation shaft device comprises a base; a first rotation unit; a pair of second rotation units, a first rotation guiding structure is disposed between the second rotation unit and the base, and a second rotation guiding structure is disposed between the second rotation unit and the first rotation unit; a torsion unit, having a connection rod, a friction torsion mechanism is disposed between the connection rod and the first rotation unit; a slide mechanism, including a slide block pivoted to the connection rod and radially formed with at least one slide hole allowing a slide rod to be received, and a spring sleeved on the slide rod; with an energy releasing or energy storing effect provided by the spring, the slide block is able to provide a torsion, which has effects of automatically unfolding and folding assistance, to the first rotation unit.