Patents by Inventor Masaaki OOWAKI

Masaaki OOWAKI 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).

  • Oil pump having extension portions that reduce the effect of #the collapse of bubbles in the oil
    Patent number: 10174757
    Abstract: In an oil pump, an inner rotor and an outer rotor rotate to discharge the oil through a discharge port. The discharge port has an outer extension portion located on a radially inner side with respect to a root circle of the outer rotor and on a radially outer side of a tip circle of the outer rotor and an inner extension portion located on the radially inner side with respect to the tip circle of the outer rotor and on the radially outer side with respect to a root circle of the inner rotor. An inter-tooth chamber facing a partitioning portion that partitions the suction port from the discharge port comes into communication with the outer extension portion and the inner extension portion. Then, a tip seal portion defining the inter-tooth chamber intersects an outer edge of an opening of the discharge port.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: January 8, 2019
    Assignee: JTEKT CORPORATION
    Inventor: Masaaki Oowaki
  • OIL PUMP
    Publication number: 20170227003
    Abstract: In an oil pump, an inner rotor and an outer rotor rotate to discharge the oil through a discharge port. The discharge port has an outer extension portion located on a radially inner side with respect to a root circle of the outer rotor and on a radially outer side of a tip circle of the outer rotor and an inner extension portion located on the radially inner side with respect to the tip circle of the outer rotor and on the radially outer side with respect to a root circle of the inner rotor. An inter-tooth chamber facing a partitioning portion that partitions the suction port from the discharge port comes into communication with the outer extension portion and the inner extension portion. Then, a tip seal portion defining the inter-tooth chamber intersects an outer edge of an opening of the discharge port.
    Type: Application
    Filed: January 26, 2017
    Publication date: August 10, 2017
    Applicant: JTEKT Corporation
    Inventor: Masaaki OOWAKI