Patents by Inventor Frank E. Pringle

Frank E. Pringle 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).

  • Combination weighing machine having volume confining function
    Patent number: 4569406
    Abstract: A combination weighing machine having a plurality of weighing units and being adopted to load at least one of the weighing units with articles having a predetermined volume, to compare the weight signal from this weighing unit with a predetermined reference weight signal and to deliver the articles of the predetermined weight if their weight is greater than the reference weight. If the weight of such articles is less than the reference weight the machine is operable to generate combinations of the aforesaid; weight signal and the weight signals from the other weighing units to select a combination having a weight greater than the reference weight, for the purpose of forming batches of articles each having volume and weight greater than predetermined values.
    Type: Grant
    Filed: September 21, 1984
    Date of Patent: February 11, 1986
    Assignee: Yamato Scale Company, Limited
    Inventors: Frank E. Pringle, Shinichi Inoue