Patents by Inventor Masuo Shimizu

Masuo Shimizu 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 for laminate forming a sand mould and a method for producing a casting using the same
    Patent number: 5718279
    Abstract: After sand of one layer is loaded into a sand layer elevator (20), a shading mask (38) is positioned above the sand, and a diffused laser beam is irradiated from a diffused laser irradiating source (16). Thereby, a predetermined range of sand under the shading mask (38) is exposed and this exposed portion is cured. This operation is repeated for a predetermined number of sand layers and cured portions are piled up to directly form a 3-D sand mould. Particularly, a diffused laser beam is used to cure a wide range of sand at a time, thereby making sand mould mass-production possible.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: February 17, 1998
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiromoto Satoh, Yukio Otsuka, Motoaki Ozaki, Masuo Shimizu, Yuji Okada, Yoshizumi Senda, Soya Takagi, Masaru Ogura