Patents by Inventor Yoshikazu Sando

Yoshikazu Sando 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).

  • Method of forming a pressure seal employing an air-balance in a high pressure steamer
    Patent number: 4017258
    Abstract: A method of forming a pressure seal by employing an air balance in a high pressure steamer in which pressurized sealing gas is introduced into an air seal chamber which is shut off from the outside air by a roll seal mechanism installed at the fiber feed in and take out openings of a high pressure steamer vessel body, so that the sealing gas and steam leaking from within the vessel body into the air seal chamber buffer each other for forming and air balance within the vessel body.
    Type: Grant
    Filed: June 4, 1975
    Date of Patent: April 12, 1977
    Assignee: Sando Iron Works Co., Ltd.
    Inventors: Yoshikazu Sando, Hiroshi Ishidoshiro, Matsuo Minakata