Patents by Inventor George R. Usher

George R. Usher 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).

  • Apparatus and method for forming seamed tube
    Patent number: 4513596
    Abstract: The present invention provides an apparatus and method of forming tube, for example, muffler shells by the use of forming sheet over a mandrel by rolling a pair of symmetrical rollers from a point on the mandrel over an arcuate surface thereof to form the sheet thereof, the rolling being performed by roller means which are elongated to extend from the length of the mandrel and which are biased one towards the other with sufficient force to form the sheet as they are rolled over the surface of the mandrel.
    Type: Grant
    Filed: February 1, 1983
    Date of Patent: April 30, 1985
    Assignee: Eagle Precision Tool Ltd.
    Inventor: George R. Usher