Patents by Inventor John Wayne Wilch

John Wayne Wilch 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).

  • Patent number: 6230540
    Abstract: A tubular axle having a spindle and a bearing shoulder is formed directly into heat-treated tubing. The method generally includes a heating operation, and a two stage forming operation. The first operation is to induction heat a steel tubular axle blank to a temperature less than 1500 degrees Fahrenheit. The next operation includes forcing a preform die assembly onto the tubular blank to reduce a length of the blank to a second diameter while forming an intermediate section having a first and second ramped section. The final operation includes forcing an upset die assembly onto the end of the blank to form a gathered material section formed intermediate the first ramped section and the second ramped section. The second diameter provides a pre-machined diameter for the final axle spindle and the gathered material section provides a pre-machined area for the final integral bearing shoulder.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: May 15, 2001
    Assignee: Meritor Heavy Vehicle Systems LLC
    Inventors: John Wayne Wilch, Vipan Kumar Bhalla