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:
May. 27, 2025
Filed:
Mar. 23, 2022
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Tadashi Odashima, Toyota, JP;
Seiichi Tanabe, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A motion assistance apparatus includes a first link, a second link coupled to the first link via a rotary shaft so as to rotate, a duct fixed to the first link, an electromagnet disposed so as to cover at least part of the duct, a first movable portion connected to a first end of the duct, a second movable portion connected to a second end of the duct, magnetic fluid filled in a hermetically sealed space defined by the duct, the first movable portion, and the second movable portion, a transmitting portion configured to convert relative rotation between the first link and the second link to a relative position change between the first movable portion and the second movable portion, and a control unit configured to control the electromagnet.