Patents by Inventor John Warner Pamplin

John Warner Pamplin 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).

  • Multi-die/block drawing machines
    Patent number: 4120186
    Abstract: This invention relates to a method of determining the sequence of die sizes to be used in a multi-die/block drawing machine to draw metal from any given input stock size to any given final wire size to give optimum efficiency and proposes nomograms for achieving the sequence quickly and easily.
    Type: Grant
    Filed: June 1, 1977
    Date of Patent: October 17, 1978
    Assignee: Marshall Richards Barcro Limited
    Inventors: John Warner Pamplin, James Vine Bennett, Peter Fred Elson