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:
Jun. 22, 2021
Filed:
Jan. 26, 2017
Nsk Ltd., Tokyo, JP;
Haruhiko Kiyota, Maebashi, JP;
Takeshi Yamamoto, Maebashi, JP;
Kaname Yasuda, Maebashi, JP;
Tomohiro Arai, Maebashi, JP;
Junichi Takano, Maebashi, JP;
Kazuki Hotta, Maebashi, JP;
NSK LTD., Tokyo, JP;
Abstract
An outer wheel element () formed in an annular shape with a synthetic resin and having a worm wheel tooth part () on an outer circumferential surface thereof embeds a radially outer end part of an inner wheel element () formed in an annular shape with a metal. An outer circumferential surface of the inner wheel element (), which is radially superimposed with an engaging part between the worm tooth part () and a the worm wheel tooth part serves as a cylindrical surface part (). This realizes a structure capable of suppressing manufacturing error of the worm wheel tooth part engaging with the worm tooth part.