Patents Assigned to Maeda Iron Works Co., Ltd.
  • Direct-contact type hot water heater
    Patent number: 4765280
    Abstract: A direct-contact type hot water heater includes a perforated plate having a slope allowing water to flow down from its top apex toward its lower surroundings along both or all sides of the slope in the form of a water film. The perforated plate is provided with a number of apertures capable of forming the water film by surface tension. An endothermic material is arranged in a state where it does not project from the lower surface of the perforated plate.
    Type: Grant
    Filed: January 29, 1987
    Date of Patent: August 23, 1988
    Assignees: Maeda Iron Works Co., Ltd., Osaka Gas Co., Ltd.
    Inventors: Kunihiro Kobayashi, Saburo Usui, Shoji Otsuka, Choji Najima, Toshimichi Ohara