Patents by Inventor Makoto Shimanaga

Makoto Shimanaga 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).

  • Oil channel structure in automatic transmission
    Patent number: 5195400
    Abstract: A hydraulic actuator has a hub, an annular recessed groove on the inner peripheral surface of the hub and an oil chamber, from which a slanted oil channel is pierced to the bottom of the recessed groove. Accordingly, there is no need for the slanted oil channel to extend to the inner peripheral surface of the hub, by which the slanted oil channel can save its length. The oil is sent from the supply oil channel formed in the boss section to the annular recessed groove of the hub in slidable contact with the boss section, and to the oil chamber through the slanted oil channel.
    Type: Grant
    Filed: February 7, 1991
    Date of Patent: March 23, 1993
    Assignee: Aisin AW Co., Ltd.
    Inventors: Youichi Hayakawa, Chihiro Hosono, Masaaki Nishida, Makoto Shimanaga