Patents by Inventor Kenzi Ohizumi

Kenzi Ohizumi 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).

  • Intake- and/or exhaust-valve timing control system for internal combustion engines
    Patent number: 4996955
    Abstract: An intake- and/or exhaust-valve timing control system for an internal combustion engine comprises an inner sleeve having an outer toothed portion, firmly connected to a front end of a camshaft, a cam sprocket having an inner toothed portion, connected through a timing chain to an engine crankshaft, and a ring gear mechanism including inner and outer toothed portions respectively meshing with the outer toothed portion of the sleeve and the inner toothed portion of the cam sprocket, for changing the intake and/or exhaust-valve timing of the engine.
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: March 5, 1991
    Assignee: Atsugi Unisia Corporation
    Inventors: Akio Akasaka, Seiji Suga, Kenzi Ohizumi, Akiro Kadowaki, Masayuki Washio