Patents by Inventor Masamitu Ishikado

Masamitu Ishikado has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8210132
    Abstract: So as to provide a latent heat recovery-type water heater capable of certainly preventing drain generated by heat exchange from being discharged out of an exhaust portion through an outlet with entrained by a flow of combustion gas, an exhaust portion 9 is formed by an exhaust portion constituting-body 25 attached above a secondary heat exchanger 7. The exhaust portion 9 includes therewithin a deflector 26 and a distribution board 27 opposed to the deflector 26. The deflector 26 has a deflection board 30 extending substantially vertically downward from a top face 9a of the exhaust portion 9, so as to form a gap 35 between a lower end of the board 30 and a bottom face 9b of the exhaust portion 9. A flowing direction of combustion gas introduced into the exhaust portion 9 through an opening 21 of the bottom face 9b is deflected by passing through the gap 35, and the combustion gas flows toward the distribution board 27.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: July 3, 2012
    Assignee: Noritz Corporation
    Inventors: Hiroshi Asakura, Shigehiro Yamamoto, Masamitu Ishikado
  • Publication number: 20090133642
    Abstract: So as to provide a latent heat recovery-type water heater capable of certainly preventing drain generated by heat exchange from being discharged out of an exhaust portion through an outlet with entrained by a flow of combustion gas, an exhaust portion 9 is formed by an exhaust portion constituting-body 25 attached above a secondary heat exchanger 7. The exhaust portion 9 includes therewithin a deflector 26 and a distribution board 27 opposed to the deflector 26. The deflector 26 has a deflection board 30 extending substantially vertically downward from a top face 9a of the exhaust portion 9, so as to form a gap 35 between a lower end of the board 30 and a bottom face 9b of the exhaust portion 9. A flowing direction of combustion gas introduced into the exhaust portion 9 through an opening 21 of the bottom face 9b is deflected by passing through the gap 35, and the combustion gas flows toward the distribution board 27.
    Type: Application
    Filed: November 19, 2008
    Publication date: May 28, 2009
    Applicant: NORITZ CORPORATION
    Inventors: Hiroshi Asakura, Shigehiro Yamamoto, Masamitu Ishikado