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. 09, 1988
Filed:
Nov. 10, 1986
Akio Numazawa, Nagoya, JP;
Akira Sato, Susono, JP;
Fumihiro Ushijima, Okazaki, JP;
Hideaki Matsui, Gotenba, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Abstract
An automatic power transmitting system operatively connected to an engine of an automotive vehicle, having a constant-mesh transmission with at least one synchromesh device which is operated by an actuator device to selectively establish a plurality of gear positions. The system includes a first and a second clutch which are disposed in parallel relation with each other, between between the engine of the vehicle and the constant-mesh transmission. The first clutch has a one-way clutch operable to transmit an output of the engine to the constant-mesh transmission, and is engaged while the vehicle is in a normal drive mode. The second clutch is engaged while the vehicle is in an engine brake mode. Each synchromesh device is operated to effect a shifting operation after the opening of the throttle valve of the engine is reduced, and without disengaging the first clutch before the operation of the synchromesh device.