Patents by Inventor Koji HADAMA

Koji HADAMA 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).

  • Engine supercharger
    Patent number: 10260404
    Abstract: Disclosed herein is a technique for providing an engine supercharger of a reduced size allowing an exhaust gas to be introduced smoothly into a turbine scroll. A turbine for use in this supercharger includes: a turbine lead-in route, into which the exhaust gas is introduced; a turbine scroll formed continuously with the turbine lead-in route to allow the exhaust gas to swirl around inside; a turbine wheel to turn on an axis of rotation; a turbine lead-out route; a wastegate passage to bypass the exhaust gas around the turbine scroll; and a wastegate valve. The turbine lead-in route includes a throat portion having a tapered downstream portion. The wastegate passage branches from that throat portion.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: April 16, 2019
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yoshiyuki Uehane, Junji Umemura, Tomoaki Fujiyama, Koji Hadama, Makoto Mihara
  • ENGINE SUPERCHARGER
    Publication number: 20170234211
    Abstract: Disclosed herein is a technique for providing an engine supercharger of a reduced size allowing an exhaust gas to be introduced smoothly into a turbine scroll. A turbine for use in this supercharger includes: a turbine lead-in route, into which the exhaust gas is introduced; a turbine scroll formed continuously with the turbine lead-in route to allow the exhaust gas to swirl around inside; a turbine wheel to turn on an axis of rotation; a turbine lead-out route; a wastegate passage to bypass the exhaust gas around the turbine scroll; and a wastegate valve. The turbine lead-in route includes a throat portion having a tapered downstream portion. The wastegate passage branches from that throat portion.
    Type: Application
    Filed: February 2, 2017
    Publication date: August 17, 2017
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Yoshiyuki UEHANE, Junji UMEMURA, Tomoaki FUJIYAMA, Koji HADAMA, Makoto MIHARA