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. 08, 2005
Filed:
Mar. 26, 2003
Susumu Umemoto, Sakai, JP;
Tetsuo Yamaguchi, Sakai, JP;
Hidetoshi Hana, Sakai, JP;
Isamu Kawai, Sakai, JP;
Takashi Yasumi, Sakai, JP;
Yoshifumi Horiuchi, Sakai, JP;
Tetsu Fukui, Sakai, JP;
Susumu Umemoto, Sakai, JP;
Tetsuo Yamaguchi, Sakai, JP;
Hidetoshi Hana, Sakai, JP;
Isamu Kawai, Sakai, JP;
Takashi Yasumi, Sakai, JP;
Yoshifumi Horiuchi, Sakai, JP;
Tetsu Fukui, Sakai, JP;
Kubota Corporation, Osaka, JP;
Abstract
A transmission control apparatus includes transmission lines disposed between a pair of transmission shafts and a hydraulic multiple disc transmission clutch disposed on one side of the transmission lines. Power from an engine is transmitted via one of the transmission lines to a traveling unit. Each of the transmission lines has a friction clutch. A first gear mechanism operated by a first actuator is disposed between one of the transmission shafts and the first transmission line. A second gear mechanism operated by a second actuator is disposed between one of the transmission shafts and the second transmission line. When the first transmission line is powered, a first system operates the second gear mechanism into a speed position; the first clutch to a non-transmitting state and the second clutch to a transmitting state, thereby providing a progressive shifting of the transmission clutch from a transmitting state to a semi-transmitting state.