Patents Assigned to Itakura Soki Co., Ltd.
  • Valve element for an air pump
    Patent number: 4180377
    Abstract: A valve element for a small sized air pump. The valve element has legs, each of which are tightly secured within holes of valve-beds of a valve casing. A longitudinal hole is formed within each of the legs. The hole of the leg is opened at one end and closed at the other such that the hole terminates at a level horizontal to the lower surface of the valve-beds when the valve element is assembled.
    Type: Grant
    Filed: September 15, 1977
    Date of Patent: December 25, 1979
    Assignee: Itakura Soki Co., Ltd.
    Inventor: Tsuyoshi Itakura
  • Valve mechanism for an air pump
    Patent number: 4137016
    Abstract: An improved valve mechanism for a small sized air pump, having valve elements each of which is secured in a housing of a valve casing. The valve element has a semi-circular portion and a tongue. The semi-circular portion is trapezoidal and snuggly and firmly positioned within the housing.
    Type: Grant
    Filed: August 4, 1977
    Date of Patent: January 30, 1979
    Assignee: Itakura Soki Co., Ltd.
    Inventor: Tsuyoshi Itakura