Patents by Inventor Kiyomitsu Kawai

Kiyomitsu Kawai 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).

  • Shell molding machine in which blown core can be ejected outside vise assembly
    Patent number: 3939899
    Abstract: A vertical split shell molding machine characterized by comprising hanging top board rails which are movably and fixably mounted to the top board of the principal body of said machine, a blow head assembly which is arranged movably beneath said hanging top board rails, an assembly which rotates a core box by 180.degree. in the vise assembly, and an assembly which overturns a fixed core box outside the machine.
    Type: Grant
    Filed: June 13, 1974
    Date of Patent: February 24, 1976
    Assignee: Naniwa Products Co., Ltd.
    Inventor: Kiyomitsu Kawai