Patents Examined by Devon C. Karmer
  • Patent number: 7594801
    Abstract: The amount of chemical liquids dispensed by a chemical liquid supply apparatus is stabilized and dispensing accuracy is remarkably improved. A pump discharges a liquid accommodated in a liquid tank. A filter is connected to the pump through a pump outlet flow path to which a pump discharge-side valve for opening/closing the flow path is provided. A dispensing nozzle (liquid dispense portion) is connected to the filter through a liquid discharge flow path to which a discharge valve for opening/closing the flow path is provided. A vacuum source communicates with the filter through an exhaust flow path to which a deaeration valve for opening/closing the flow path is provided.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: September 29, 2009
    Assignee: Koganei Corporation
    Inventor: Seiichiro Udagawa
  • Patent number: 7371056
    Abstract: A fluid pump includes a case including a pump chamber, a reserve tank for storing spare liquid and located in the case but outside the pump chamber and formed so that a space independent of the pump chamber is defined by the reserve tank, a fluid path forming member arranged inside the reserve tank and including a discharge path communicating between a discharge port and the pump chamber, and a communication hole which is formed in a side of the fluid path forming member so as to assume such a position that the communication hole faces an inside of the reserve tank so that the hole communicates between the discharge path and the inside of the reserve tank, the communication hole being sized so that air in the pump chamber is allowed to flow through the hole into the reserve tank.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: May 13, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenichi Ito, Katsuya Seko, Kentaro Tomioka, Tomonao Takamatsu, Fumihide Nagashima, Takahiro Kojima