Patents by Inventor Stephen D Logan

Stephen D Logan 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).

  • Upset protrusion joining and forging gun therefor
    Patent number: 10807148
    Abstract: An upset protrusion joining gun for joining two parts together by forging a protrusion of one part that extends through an opening in the other part to form a boss that extends over a portion of the other part surrounding the opening.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: October 20, 2020
    Assignee: FCA US LLC
    Inventors: Kurt P Damphousse, Stephen D Logan, John Macdonald, Kenneth Martz
  • Lightweight automobile body structure
    Patent number: 6666501
    Abstract: A lightweight automobile body structure is provided and includes a base assembly including an upper sheet and a lower sheet. The upper sheet has first and second series of upper reliefs formed therein and the lower sheet has first and second series of lower reliefs formed therein. The upper and lower sheets stacked adjacent one another, whereby the first series of upper reliefs are in flush contact with the first series of lower reliefs and the second series of upper reliefs are offset from the second series of lower reliefs for defining a space therebetween. First and second side panels are fixedly attached to the base assembly and extend therefrom for defining respective sides. A roof panel is fixedly attached between the first and second side panels for defining a roof.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: December 23, 2003
    Assignee: DaimlerChrysler Corporation
    Inventors: Stephen D Logan, David W Gostovich, Suresh Nagesh, William W Doolittle, III