Patents Examined by Alexander B. Comley
  • Oil pump
    Patent number: 7410346
    Abstract: An oil pump includes a partition for dividing an outlet port into a first passage section on the upstream side and a second passage section on the downstream side, wherein a discharge passage fluidly communicates with the first passage section, and a relief valve is disposed in the second passage section.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: August 12, 2008
    Assignee: Hitachi, Ltd.
    Inventor: Dai Niwata