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. 13, 2026
Filed:
Nov. 07, 2023
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Hiroshi Kawanishi, Nisshin, JP;
Akitaka Ichikawa, Nisshin, JP;
Marina Hirata, Toyota, JP;
Shohei Nagata, Nisshin, JP;
Tsukasa Sakamaki, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A power transmission device may include a casing; and a plurality of gears located in the casing and being lubricated by a lubricant in the casing, wherein the plurality of gears may include a first gear that upwardly displaces the lubricant accumulating at a lower portion in the casing by rotation of the first gear; the casing may include a facing wall facing a side surface of the first gear; the facing wall may include a first rib that protrudes toward the side surface of the first gear and extends along a circumferential direction of the first gear; and the side surface of the first gear, the first rib, and the facing wall may define a first lubricant passage that guides the lubricant displaced upward by the first gear along the circumferential direction.