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:
Jan. 10, 2012
Filed:
Feb. 26, 2009
Makoto Tomita, Nagoya, JP;
Eiji Ichioka, Toyota, JP;
Makoto Tomita, Nagoya, JP;
Eiji Ichioka, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
The composite planetary gear apparatus according to the present invention can bring about an advantageous effect to prevent fuel efficiency from being lowered stemming from the increased stirring loss of oil. The apparatus comprises a first planetary gear assemblyhaving a sun gear S, pinion gears P, and a ring gear R, and a second planetary gear assemblyhaving a sun gear S, pinion gears P, and a ring gear R. The ring gears Rand Rsurround the pinion gears Pand Pand are combined together to integrally form a counter drive gear. The counter drive gearis formed with a plurality of through boreseach having an inner end opened at a closed space defined by the first and second planetary gear assembliesand, and an outer end opened at an outer space surrounding the counter drive gear