Patents by Inventor Eisuke Nishizu

Eisuke Nishizu 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).

  • Automatic controlling device for maintaining a constant rate of air flow in air-conditioning equipment
    Patent number: 3958605
    Abstract: The present invention relates to automatic control devices generally for the purpose, in the terminal equipment of an air-conditioning system which blows conditioned air, flowing thereinto through the duct from the central air conditioner, out into the room, of keeping the rate of flow at a certain fixed level. More specifically, the present invention relates to a new and improved type of automatic control device which is worked in a stabilized condition at as low wind pressure as possible and which is capable of blowing air out always at a certain prefixed rate of flow irrespective of fluctuations of the pressure inside the duct.
    Type: Grant
    Filed: November 25, 1974
    Date of Patent: May 25, 1976
    Assignee: Sinko Kogyo Co., Ltd.
    Inventors: Eisuke Nishizu, Michitomo Okubo, Eiichi Wada