Patents by Inventor Yoshihisa NIWA

Yoshihisa NIWA 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 supply device
    Patent number: 10947894
    Abstract: An oil supply device configured to supply oil to a turbocharger of an engine includes a first oil pump, a second oil pump, a first valve, and a second valve. The first oil pump is coupled to a bearing unit of the turbocharger via an oil supply path, and configured to supply oil to the bearing unit. The second oil pump is coupled to the bearing unit via an oil discharge passage, and configured to suck oil from the bearing unit. The first valve is provided in the oil supply path. The first valve is switchable from a connected state to a disconnected state when the engine is to be stopped. The second valve is provided in the oil discharge passage. The second valve is switchable from a connected state to a disconnected state when the engine is to be stopped.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: March 16, 2021
    Assignee: SUBARU CORPORATION
    Inventor: Yoshihisa Niwa
  • OIL SUPPLY DEVICE
    Publication number: 20180283270
    Abstract: An oil supply device configured to supply oil to a turbocharger of an engine includes a first oil pump, a second oil pump, a first valve, and a second valve. The first oil pump is coupled to a bearing unit of the turbocharger via an oil supply path, and configured to supply oil to the bearing unit. The second oil pump is coupled to the bearing unit via an oil discharge passage, and configured to suck oil from the bearing unit. The first valve is provided in the oil supply path. The first valve is switchable from a connected state to a disconnected state when the engine is to be stopped. The second valve is provided in the oil discharge passage. The second valve is switchable from a connected state to a disconnected state when the engine is to be stopped.
    Type: Application
    Filed: January 16, 2018
    Publication date: October 4, 2018
    Applicant: SUBARU CORPORATION
    Inventor: Yoshihisa NIWA