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. 18, 2025
Filed:
Dec. 12, 2023
Hydraulic clutch and work-vehicle travel power transmission apparatus including the hydraulic clutch
Kubota Corporation, Osaka, JP;
Hidetoshi Hana, Sakai, JP;
Atsushi Jinnai, Sakai, JP;
Tomonari Tsuchida, Sakai, JP;
Ryoma Iwase, Sakai, JP;
Yosui Nishijima, Sakai, JP;
Naoyuki Miyamoto, Sakai, JP;
KUBOTA CORPORATION, Osaka, JP;
Abstract
A clutch hub includes oil supply holes extending therethrough to supply lubricating oil from an interior of the clutch hub toward first clutch plates and second clutch plates. An injection port to allow injection of the lubricating oil into the interior of the clutch hub is located inside of the clutch hub between the clutch hub and a rotation axis of a clutch body. The clutch hub includes an inner circumferential portion including an opposing portion opposing the injection port, and a first portion closer to a first end portion of the clutch hub than the opposing portion in a direction extending along the rotation axis. The first portion includes an inclined inner circumferential surface structured such that a radius of the clutch hub decreases toward the first end portion.