Patents by Inventor Kyoichi Umemura

Kyoichi Umemura 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).

  • Layout of auxiliary mechanisms for an engine
    Patent number: 4959042
    Abstract: Auxiliary mechanisms for an engine are arranged in the order of rotational inertia force so that the rotational inertia force of the auxiliary mechanism nearest to the crankshaft pulley as seen toward the tight side of auxiliary mechanism driving belt from the crankshaft pulley is the largest.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: September 25, 1990
    Assignee: Mazda Motor Corporation
    Inventors: Hideki Tanaka, Kyoichi Umemura
  • Balancer control device for multiple-cylinder four-cycle engine
    Patent number: 4608952
    Abstract: A multiple-displacement engine which can be operated either in a full-displacement operation in which all the cylinders are operative or a two-cylinder operation in which only two of the cylinders are operative is provided with a balancer control device.
    Type: Grant
    Filed: July 15, 1985
    Date of Patent: September 2, 1986
    Assignee: Mazda Motor Corporation
    Inventors: Shigeru Morita, Hideki Tanaka, Kyoichi Umemura