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:
Oct. 17, 2017
Filed:
Oct. 10, 2013
Chia-yi Hsu, Taipei, TW;
Chia-Yi Hsu, Taipei, TW;
Other;
Abstract
A counterweight arm mechanism having an adjustable dragline tension system capable of adjusting tension; the system comprising a dragline, an extension spring, and a dragline adjustment mechanism; the dragline adjustment mechanism adjusted the overall length of the dragline as a function of the rotation angle of a counterweight arm; the dragline length adjustment mechanism being implemented according to the two legs of a right-angled ΔABC and the property of a+b=2√2R sin(A+π/4); when the counterweight arm rotates, the mechanical structure can be used to drive the vertex of the right angle of the right-angled ΔABC to rotate along with the counterweight arm, and synchronously move in line with the circumcircle of the right-angled ΔABC, thus the tension on the counterweight arm from the adjustable dragline tension system changes with the rotation angle of the counterweight arm.