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:
Feb. 18, 1997
Filed:
May. 30, 1995
Applicant:
Inventor:
Mitsuhiro Umeyama, Toyota, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
74325 ; 74331 ; 74335 ; 475207 ;
Abstract
A motor vehicle transmission system including frictional coupling devices disposed in series connection with respective gear trains between input and output shafts, a one-way clutch disposed in series connection with each of at least one of the gear trains except the smallest gear ratio gear train, for transmitting power from the input shaft to the output shaft, and a shift controller operable during forward running of the vehicle to operate the frictional coupling devices for simultaneous slipping or partial engagement of selected frictional coupling devices, particularly, upon and immediately after starting of the vehicle.