Patents by Inventor Francis J. Preston

Francis J. Preston 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).

  • Top loading detachable stud feeding assembly
    Patent number: 4469928
    Abstract: Improvements to stud welding equipment having automatic stud feeding apparatus. The stud receiving chamber and receiving chamber entrance are positioned for top loading of the studs being fed through a stud loading tube. The stud loading tube and attached stud feed tube are detachably connected to the stud welding gun by a stud block and disconnect assembly which includes a transversely movable slider which provides the dual function of providing the detachable interlock with the stud welding gun and blockage of the stud loading tube when the assembly is detached.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: September 4, 1984
    Assignee: KSM Fastening Systems, Inc.
    Inventors: Harold C. Wilkinson, Alan W. Mkitarian, Vito P. Navarra, Francis J. Preston