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:
Nov. 21, 1989
Filed:
Jan. 13, 1988
Toshio Yamaguchi, Hatano, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
Herein disclosed is an automatic transmission which comprises a first clutch including a first drum with a closed bottom portion, and a first piston axially slidably received in the first drum to define a piston working fluid chamber in the first drum between the first piston and the closed bottom portion, the first piston having a cylindrical outer wall portion which extends away from the closed bottom portion of the first drum; a second clutch including a second drum coaxially received in the first drum in a manner to define between a cylindrical inner surface of the first drum and a cylindrical outer surface of the second drum a cylindrical clearance; a clutch plate unit including drive and driven plates which are juxaposed, the clutch plate unit being arranged within the cylindrical clearance and compressed by a leading end of the cylindrical outer wall portion of the first piston upon application of fluid pressure to the piston working fluid chamber; and a biasing structure for biasing the first piston away from the clutch plate unit, the biasing structure being installed within the cylindrical clearance.