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:
Aug. 02, 2022
Filed:
Jan. 15, 2021
Seiko Epson Corporation, Toyko, JP;
Masaaki Sakata, Matsumoto, JP;
Abstract
A gearing includes an internal gear, a flexible external gear partially meshing with the internal gear and relatively rotating about a rotation axis to the internal gear, and a wave generator including a bearing contacting an inner circumferential surface of the external gear and a cam contacting an inner circumferential surface of the bearing and moving a mesh position between the internal gear and the external gear in a circumferential direction about the rotation axis, wherein an outer circumferential surface of the bearing forms a circular shape without contact with the cam, the inner circumferential surface of the external gear forms a circular shape without contact with the wave generator, and where an outer diameter of the bearing without contact with the cam is d[mm] and an inner diameter of the external gear without contact with the wave generator is d[mm].