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. 30, 1990
Filed:
May. 26, 1988
Yuji Sato, Higashi-matsuyama, JP;
Hiromi Kono, Higashi-matsuyama, JP;
Akifumi Tanoue, Higashi-matsuyama, JP;
Yoshiyuki Kimura, Higashi-matsuyama, JP;
Diesel Kiki Co., Ltd., Tokyo, JP;
Abstract
An automatic transmission includes a fluid-pressure differential cylinder for select operation of the transmission and a fluid-pressure differential cylinder for shift operation of the transmission, each of the differential cylinders being built up into one block and joined with the mating differential cylinder with intake and discharge holes in one block held in communication with intake and discharge holes, respectively, in the other block. A piston rod of each of the differential cylinders has an annular groove and a cylinder block is provided with a locking member engageable with the groove to provide a reference position for the piston rod.