Patents by Inventor Tsuyoshi Ebihara

Tsuyoshi Ebihara 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).

  • Vane pump including fluid communication passages for routing fluid received from two inflow passages around outer peripheral surface of the entire perimeter of the cam ring
    Patent number: 11396874
    Abstract: A vane pump that includes a first communication passage that extends along an outer periphery of the cam ring and that guides a fluid that has not flowed into the first suction port from the first inflow passage to the second suction port; a second communication passage that extends along the outer periphery of the cam ring on an opposite side of the first communication passage with respect to the rotor and that guides a fluid that has not flowed into the second suction port from the second inflow passage to the first suction port; and a rectifying portion that guides the fluid from the second inflow passage so that the fluid flows into the second suction port along the outer periphery of the cam ring.
    Type: Grant
    Filed: September 18, 2020
    Date of Patent: July 26, 2022
    Assignees: AISIN CORPORATION, JTEKT CORPORATION
    Inventors: Takahiro Torii, Kazuki Kojima, Naohito Yoshida, Tsuyoshi Ebihara
  • VANE PUMP
    Publication number: 20210095665
    Abstract: A vane pump that includes a first communication passage that extends along an outer periphery of the cam ring and that guides a fluid that has not flowed into the first suction port from the first inflow passage to the second suction port; a second communication passage that extends along the outer periphery of the cam ring on an opposite side of the first communication passage with respect to the rotor and that guides a fluid that has not flowed into the second suction port from the second inflow passage to the first suction port; and a rectifying portion that guides the fluid from the second inflow passage so that the fluid flows into the second suction port along the outer periphery of the cam ring.
    Type: Application
    Filed: September 18, 2020
    Publication date: April 1, 2021
    Applicants: AISIN AW CO., LTD., JTEKT CORPORATION
    Inventors: Takahiro TORII, Kazuki KOJIMA, Naohito YOSHIDA, Tsuyoshi EBIHARA
  • Gear pump
    Patent number: 9506466
    Abstract: In a gear pump, an outer rotor and an inner rotor are disposed in a rotor installation chamber defined by a pump body and a pump cover. A suction port groove and a discharge port groove are formed in at least one of the pump body and the pump cover. A narrowing portion is formed at a portion of a radially outer side wall portion of the suction port groove, the portion being close to a terminal end wall portion of the suction port groove. The narrowing portion narrows the groove width in the radial direction. A pressurizing region that pressurizes oil in the gear chamber is formed between the narrowing portion and the terminal end wall portion.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: November 29, 2016
    Assignee: JTEKT CORPORATION
    Inventors: Tsuyoshi Ebihara, Teppei Morita, Katsuhisa Udo
  • GEAR PUMP
    Publication number: 20150030488
    Abstract: In a gear pump, an outer rotor and an inner rotor are disposed in a rotor installation chamber defined by a pump body and a pump cover. A suction port groove and a discharge port groove are formed in at least one of the pump body and the pump cover. A narrowing portion is formed at a portion of a radially outer side wall portion of the suction port groove, the portion being close to a terminal end wall portion of the suction port groove. The narrowing portion narrows the groove width in the radial direction. A pressurizing region that pressurizes oil in the gear chamber is formed between the narrowing portion and the terminal end wall portion.
    Type: Application
    Filed: July 24, 2014
    Publication date: January 29, 2015
    Applicant: JTEKT Corporation
    Inventors: Tsuyoshi Ebihara, Teppei Morita, Katsuhisa Udo