Patents by Inventor Keisuke Kashiwa

Keisuke Kashiwa 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).

  • Electric oil pump
    Patent number: 7240656
    Abstract: An object of the invention is to provide an electric oil pump with greatly improved operation, increased endurance, and extended service life of an Oldham's coupling connecting a drive shaft that rotates a rotor in a pump housing and a motor output shaft in a motor housing. The electric pump comprises a pump housing having a rotor and a drive shaft for rotatably supporting the rotor, and a motor housing connected to the pump housing and having an output shaft connected to the drive shaft via an Oldham's coupling. The pump housing is provided with a coupling chamber for accommodating the Oldham's coupling, and a linking channel for transporting the leaked oil from a rotor chamber accommodating the rotor of the pump housing to the coupling chamber.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: July 10, 2007
    Assignee: Yamada Manufactoring Co., Ltd.
    Inventors: Kosuke Yamane, Masanori Umeno, Keisuke Kashiwa, Hirotaka Eno
  • Electric oil pump
    Publication number: 20060140805
    Abstract: An object of the invention is to provide an electric oil pump with greatly improved operation, increased endurance, and extended service life of an Oldham's coupling connecting a drive shaft that rotates a rotor in a pump housing and a motor output shaft in a motor housing. The electric pump comprises a pump housing having a rotor and a drive shaft for rotatably supporting the rotor, and a motor housing connected to the pump housing and having an output shaft connected to the drive shaft via an Oldham's coupling. The pump housing is provided with a coupling chamber for accommodating the Oldham's coupling, and a linking channel for transporting the leaked oil from a rotor chamber accommodating the rotor of the pump housing to the coupling chamber.
    Type: Application
    Filed: December 22, 2005
    Publication date: June 29, 2006
    Applicant: Yamada Manufacturing Co., Ltd.
    Inventors: Kosuke Yamane, Masanori Umeno, Keisuke Kashiwa, Hirotaka Eno