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. 07, 2025
Filed:
Oct. 10, 2023
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Kazutoshi Nishii, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
In a method for designing a quaternion joint where a first member rotatably coupled to a second member through links, a distance hbetween both ends of the link at an initial position of an operating angle of the link, a distance wbetween ends of the adjacent links, and a distance ho required to secure a degree of freedom of the end of the link are set based on a constraint condition in which a distance between a point on an ellipse corresponding to the start operating angle of the link and a point at which a center point of the ellipse is shifted by the distance ho and a distance between a point on the ellipse corresponding to an end operating angle of the link and a point at which the center point of the ellipse is shifted by the distance ho are made equal to each other.