Patents Assigned to Hokuto MFG, Co., Ltd.
  • Means for preventing water hammer in fluid-feeding system
    Patent number: 4616678
    Abstract: Means for preventing water hammer in a fluid-feeding system caused by a jet mixer installed in the fluid-feeding system. The jet mixer comprises a casing having an inlet and an outlet for the system fluid and a supply port for a material to be mixed into the system fluid, and a venturi-type jet tube within the casing. A group of a plurality of spring-shaped elements is padded within a chamber defined between the jet tube and the surrounding casing.
    Type: Grant
    Filed: August 30, 1985
    Date of Patent: October 14, 1986
    Assignee: Hokuto MFG, Co., Ltd.
    Inventor: Mitsuo Hoshi