Patents by Inventor Maarten G.W. WITMAAR

Maarten G.W. WITMAAR 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).

  • Spark-ignition engine
    Patent number: 9951684
    Abstract: There is provided a spark-ignition engine with which a gas supply device and an intake system can be integrated with the engine. In the spark-ignition engine including: a throttle body; a gas mixer; a gas regulator; and a gas relay pipe, a collector portion of an intake manifold is supported to extend in a front-back direction on one side of a cylinder head cover, the throttle body is mounted to a back portion of the collector portion of the intake manifold, the gas mixer is mounted to a back portion of the throttle body above a flywheel, the gas regulator is disposed on a side of an exhaust manifold above the flywheel and mounted to a cylinder head, and the gas relay pipe is supported to extend sideways between the gas regulator and the gas mixer behind the cylinder head cover.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: April 24, 2018
    Assignees: KUBOTA Corporation, IMPCO Technologies B.V.
    Inventors: Hiroshi Inoue, Rudolf Van Dodewaard, Maarten G. W. Witmaar
  • SPARK-IGNITION ENGINE
    Publication number: 20160115860
    Abstract: There is provided a spark-ignition engine with which a gas supply device and an intake system can be integrated with the engine. In the spark-ignition engine including: a throttle body; a gas mixer; a gas regulator; and a gas relay pipe, a collector portion of an intake manifold is supported to extend in a front-back direction on one side of a cylinder head cover, the throttle body is mounted to a back portion of the collector portion of the intake manifold, the gas mixer is mounted to a back portion of the throttle body above a flywheel, the gas regulator is disposed on a side of an exhaust manifold above the flywheel and mounted to a cylinder head, and the gas relay pipe is supported to extend sideways between the gas regulator and the gas mixer behind the cylinder head cover.
    Type: Application
    Filed: September 1, 2015
    Publication date: April 28, 2016
    Inventors: Hiroshi INOUE, Rudolf Van DODEWAARD, Maarten G.W. WITMAAR
  • General purpose engine
    Patent number: D772944
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: November 29, 2016
    Assignees: Kubota Corporation, Impco Technologies B.V.
    Inventors: Hiroshi Inoue, Rudolf van Dodewaard, Maarten G. W. Witmaar