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:
Apr. 16, 2024
Filed:
Nov. 18, 2021
Kabushiki Kaisha Riken, Tokyo, JP;
Satoru Fujita, Tokyo, JP;
Kazuo Ishizuka, Tokyo, JP;
Tomoki Shirasawa, Tokyo, JP;
Ryo Kamiyama, Tokyo, JP;
KABUSHIKI KAISHA RIKEN, Tokyo, JP;
Abstract
It is included an internal gear (2), an external gear (3) having flexibility, and a wave generator (4) that forms a meshing part (P) with the internal gear (2) in the external gear (3) and moves the meshing part (P) in a circumferential direction of the internal gear (2). The wave generator (4) is configured such that the meshing part (P) is formed at three or more positions in a circumferential direction of the external gear (3). A value (Dp/Z) obtained by dividing a working pitch diameter Dpof the external gear (3) by the number of teeth Zis greater than a value (Dp/Z) obtained by dividing a working pitch diameter Dpof the internal gear (2) by the number of teeth Z.