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:
Sep. 30, 2025
Filed:
Oct. 26, 2023
Nabtesco Corporation, Tokyo, JP;
Masataka Sato, Tokyo, JP;
Etsuro Komori, Tokyo, JP;
NABTESCO CORPORATION, Tokyo, JP;
Abstract
A hydraulic device includes: a first block having internal teeth; a second block configured to rotate relative to the first block; an oscillatory rotating body having external teeth smaller in number than the internal teeth, being provided inside the first block such that it is oscillatorily rotatable, and having an inner circumferential portion; a rotation restricting shaft extending from the inner circumferential portion of the oscillatory rotating body in a direction intersecting a radial direction and coupling the oscillatory rotating body and the second block such that they are not allowed to rotate relative to each other while allowing the oscillatory rotating body to oscillatorily rotate; a first friction plate configured to rotate together with the oscillatory rotating body; a second friction plate restricted from rotating by the second or first block; and a press mechanism configured to press the first and second friction plates against each other.