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:
Jul. 28, 2026
Filed:
Jul. 15, 2022
Musashi Seimitsu Industry Co., Ltd., Toyohashi, JP;
Kazuma Oyaizu, Toyohashi, JP;
Hiroki Niimi, Toyohashi, JP;
Musashi Seimitsu Industry Co., Ltd., Aichi, JP;
Abstract
The present disclosure provides a transmission device that can enhance a lubricity of a differential mechanism without using a pump. The present disclosure is a transmission device including a differential case and a differential mechanism arranged inside the differential case. The differential mechanism includes first and second pinion gears and first and second side gears. The differential case includes a housing, first and second sleeves coupled to the housing, an oil discharging groove extending from an outer end of the first sleeve to an interior of the housing, and an oil introducing groove extending from an outer end of the second sleeve to the interior of the housing. The oil discharging groove is arranged such that the oil discharging groove reaches an internal space of the housing at a radial outside of the first side gear and increases in width toward the outer end of the first sleeve.