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. 27, 2009
Filed:
Nov. 16, 2005
Hirofumi Nakagomi, Fukuroi, JP;
Tsuyoshi Hirayanagi, Fukuroi, JP;
Hirofumi Nakagomi, Fukuroi, JP;
Tsuyoshi Hirayanagi, Fukuroi, JP;
NSK-Warner K.K., Tokyo, JP;
Abstract
A wet-type multiplate clutch has an outer circumferential drum section, an inner circumferential hub, a pressing member, and a clutch engagement unit composed of plural friction plates and separator plates alternately arranged between the drum section and the hub. One of mutually-contacting walls of the drum section and clutch engagement unit and one of mutually-contacting walls of the unit and pressing member are provided at their predetermined contact areas with inclinations such that, when the clutch is out of engagement, the mutually-contacting walls of the drum section and unit and the mutually-contacting walls of the unit and pressing member form wedge-shaped spaces between them, respectively, as viewed in a radially-extending, axial cross-section, said wedge-shaped spaces being gradually reduced in widths thereof toward an exterior in a radial direction and, when the clutch is in engagement, the mutually-contacting walls of the drum section and unit and the mutually-contacting walls of the unit and pressing member radially extend at right angles relative to a central axis of the wet-type multiplate clutch and are in close contact with each other, respectively.