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. 31, 2024
Filed:
Mar. 03, 2024
Mitsuba Corporation, Gunma, JP;
Motoaki Kobayashi, Gunma, JP;
Teppei Tokizaki, Gunma, JP;
MITSUBA Corporation, Gunma, JP;
Abstract
A speed reduction mechanism has an increased reduction ratio while achieving downsizing. A speed reduction mechanismincludes a rotating shaft, a pinion gearincluding a first tooth portionextending spirally along a longitudinal direction Qof the rotating shaft, three planetary gearsincluding spiral second tooth portionsand arranged side by side in a circumferential direction Qof the rotating shaft, a housing portionhousing the three planetary gears, and an internal gearincluding a spiral third tooth portionmeshing with the second tooth portions. The first tooth portionhas at least a part of a tooth profile cross section formed in an arc shape. The second tooth portionmeshes with the first tooth portionin a state of being in contact with a portion where the tooth profile cross section is arc-shaped.