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:
Aug. 08, 1995
Filed:
Apr. 08, 1993
Kazunori Enokido, Hiroshima, JP;
Hidehiko Mishima, Hiroshima, JP;
Toshihisa Marusue, Hiroshima, JP;
Tatsutoshi Mizobe, Hiroshima, JP;
Shigeru Nagayama, Hiroshima, JP;
Takayuki Sumimoto, Hiroshima, JP;
Minoru Kuriyama, Higashi-Hiroshima, JP;
Shinya Kamada, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
A multiple stage automatic transmission includes a main transmission mechanism, a sub-transmission mechanism connected with the main transmission mechanism to for introduction of a torque therefrom, and a frictional element connected with the sub-transmission. The engaging force of the frictional element is changed at least by two steps in accordance with a shift mode without changing a hydraulic pressure applied for actuating the frictional element. A shift shock, therefore, can be obviated.