Patents by Inventor Takao Amasaki

Takao Amasaki 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).

  • Electrostatic powder spray coating method
    Patent number: 5928731
    Abstract: A high voltage generated by a high voltage generator is applied to corona electrodes, and powder supplied from a powder flow passage collides against a diffuser main body while being moved in a vortex by air ejected from a vortex air introduction port and is ejected from a nozzle opening. After the powder is charged by ions generated by corona discharge, it is sprayed to an object to be coated. Free ions generated by the corona discharge are trapped by ion trap electrodes. The adhesion of the powder can be prevented by the ejection of compressed air through a diffuser front portion cover and an outer cylinder cover each composed of a porous member and the ejection of compressed air from a nozzle hole.
    Type: Grant
    Filed: June 3, 1997
    Date of Patent: July 27, 1999
    Assignees: Nihon Parkerizing Co., Ltd., Nippon Paint Co., Ltd.
    Inventors: Kenzo Yanagida, Mituyosi Kumata, Masahiro Yamamoto, Shannon Libke, Takao Amasaki, Koichi Tsutsui