Patents by Inventor Tamotsu Umeyama

Tamotsu Umeyama 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 and apparatus for judging inner pressure of filled can
    Patent number: 4800932
    Abstract: An apparatus for determining the internal pressure of a filled can by measuring the reaction force of a filled can body when the can is passed between back-up and measuring rolls which are spaced apart from each other by 2 mm or more than the average diameter of the axially central portion of the can body. At least one of the rolls has a crown-like outer periphery which has an arcuate sectional profile having a radius of 60 mm or above taken in a plane containing the roll axis.
    Type: Grant
    Filed: January 9, 1987
    Date of Patent: January 31, 1989
    Assignee: Daiwa Can Company, Ltd.
    Inventors: Masayuki Masuda, Tamotsu Umeyama