Patents by Inventor Hiroyasu Miyao

Hiroyasu Miyao 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).

  • Ignition systems of internal combustion engines
    Patent number: 4109631
    Abstract: A reactor and the primary winding of an ignition transformer are connected in series across a source of direct current, the secondary winding of the ignition transformer is connected across an ignition plug and an interrupter is connected in parallel with the primary winding.
    Type: Grant
    Filed: October 13, 1976
    Date of Patent: August 29, 1978
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Hiroyasu Miyao
  • Turn signal system
    Patent number: 4058797
    Abstract: A turn signal system for a vehicle which comprises an automatically resettable actuating switch mechanism, an electronic control unit to produce a cancelling signal after a predetermined time interval on the basis of a signal supplied by a speed detection unit, an intermittently lighting device controllable by said cancelling signal so as to be terminated by said cancelling signal, and one or more pairs of direction display lamps provided on both right and left sides of a vehicle.
    Type: Grant
    Filed: June 3, 1976
    Date of Patent: November 15, 1977
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Tomoaki Sekiguchi, Hiroyasu Miyao, Hidekazu Shimizu