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:
Feb. 19, 2019
Filed:
Jun. 20, 2017
Aisin Seiki Kabushiki Kaisha, Kariya-shi, JP;
Masao Noguchi, Kariya, JP;
Toshiaki Nagata, Chita-gun, JP;
AISIN SEIKI KABUSHIKI KAISHA, Kariya-shi, JP;
Abstract
A speed reducer includes: a case; an input shaft rotationally driven by an electric motor and having an eccentric shaft portion; an externally toothed gear wheel rotatably supported on the eccentric shaft portion; an output shaft rotatably supported on the case coaxially with the input shaft and having an internally toothed gear wheel; a guide plate formed with a guide recess recessed parallel to the input shaft, and disposed between the input shaft and the externally toothed gear wheel; a guide protrusion provided in the case to protrude parallel to the input shaft to guide sliding of the recess; and a guide portion provided between the externally toothed gear wheel and the guide plate to guide movement of the externally toothed gear wheel relative to the guide plate, thereby guiding the externally toothed gear wheel so as to be revolvable but non-rotatable in cooperation with the recess and the protrusion.