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:
Feb. 03, 2026
Filed:
Sep. 28, 2022
Nsk Ltd., Tokyo, JP;
Akihiro Yamamoto, Fujisawa, JP;
Hirotaka Kishida, Fujisawa, JP;
NSK LTD., Tokyo, JP;
Abstract
Provided are a friction engagement device connected by pressing a friction plate and a separate plate against each other and disconnected by releasing the force pressing them; a rotation transmission state switching device having at least a free mode in which rotation of a first member relative to a second member is allowed and a lock mode in which rotation of the first member relative to the second member is prevented; and a control device having a function to switch the rotation transmission state switching device to a lock mode while maintaining the friction engagement device in a connected state and a function to switch to a state where the friction engagement device is disconnected and the rotation transmission state switching device is in a free mode.