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:
Dec. 27, 2022
Filed:
Nov. 20, 2020
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Yuya Kataoka, Azumino, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 49/00 (2006.01); B25J 9/10 (2006.01);
U.S. Cl.
CPC ...
F16H 49/001 (2013.01); B25J 9/102 (2013.01); F16H 2049/003 (2013.01);
Abstract
A gear device includes an internal gear, a flexible external gear, and a wave generator. The wave generator includes an elliptical cam and a bearing. Grease is applied to the inner circumferential surface of the external gear. A groove is provided along a rotation axis on at least one of the inner circumferential surface of the external gear and an outer circumferential surface of the bearing.