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:
Mar. 19, 2013
Filed:
Oct. 29, 2010
Tetsuya Matsuoka, Kobe, JP;
Hiroyasu Nishikawa, Kobe, JP;
Tooru Nishida, Akashi, JP;
Hirofumi Akahori, Akashi, JP;
Hideyuki Imai, Akashi, JP;
Tatsuhiko Goi, Kobe, JP;
Tetsuya Matsuoka, Kobe, JP;
Hiroyasu Nishikawa, Kobe, JP;
Tooru Nishida, Akashi, JP;
Hirofumi Akahori, Akashi, JP;
Hideyuki Imai, Akashi, JP;
Tatsuhiko Goi, Kobe, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Kobe-shi, JP;
Abstract
A planetary gear reduction system has a sun gear, a plurality of planet gears, a ring gear, and a planet carrier. The planet carrier has a first plate supporting one ends of planet shafts supporting the planet gears, a second plate supporting the other ends of the planet shafts, and a cylindrical drum connecting the first and second plates. The first plate has first portions supporting the one ends of the planet shafts; second portions connecting the first plate to the drum, the first and second portions being provided alternately in a circumferential direction; first cutouts each defined between the neighboring first and second portions, the first cutouts each extending radially inwardly from a circumferential edge thereof to a position adjacent a circle passing centers of the planet shafts; and second cutouts each defined radially inward of the second portion and between the neighboring two first portions, the second cutouts each extending radially inwardly from a first region outside the circle and a second region inside the circle.