Patents by Inventor Yasuo Seno

Yasuo Seno has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Vehicle multi-ratio transmission
    Patent number: 5462148
    Abstract: In a vehicle multi-ratio transmission comprising a plurality of change-speed gear trains, including a backward directional gear train, with which synchronizer clutches are associated for actuating same, two multidisc-type synchronizer clutches (12) are employed for actuating one of forward directional gear trains, which is operated under a heavy condition, and for actuating the backward directional gear train. Cone-type synchronizer clutches (11) are employed for actuating the other gear trains. Seizing of clutch members as well as an unexpected start of the vehicle at a neutral condition of the transmission are well prevented and increase of cost for securing these advantages is suppressed.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: October 31, 1995
    Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.
    Inventors: Toshiro Azuma, Yasuo Seno, Hiroshi Kitagawara, Shusuke Nemoto