Patents by Inventor Mark Schweihofer

Mark Schweihofer 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).

  • Collet and nut assembly for stud welder
    Patent number: 7521646
    Abstract: A collet and nut assembly for a stud welder in which the body of a tubular nut has an extension sleeve that surrounds a tubular collet having longitudinal tangs separated by slots. Relief holes at base ends of the slots are inside the nut, and maximum stress on the collet is redistributed away from the relief holes. The nut may have a further tubular extension forming a cover for the collet, with a face that protects the tip of the collet from weld spatter and soot. The cover also protects the collet from heat.
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: April 21, 2009
    Assignee: Newfrey LLC
    Inventors: Joe Schlafhauser, Brian M. Wilkins, Mark Schweihofer
  • Collet and nut assembly for stud welder
    Publication number: 20060032837
    Abstract: A collet and nut assembly for a stud welder in which the body of a tubular nut has an extension sleeve that surrounds a tubular collet having longitudinal tangs separated by slots. Relief holes at base ends of the slots are inside the nut, and maximum stress on the collet is redistributed away from the relief holes. The nut may have a further tubular extension forming a cover for the collet, with a face that protects the tip of the collet from weld spatter and soot. The cover also protects the collet from heat.
    Type: Application
    Filed: July 27, 2005
    Publication date: February 16, 2006
    Inventors: Joe Schlafhauser, Brian Wilkins, Mark Schweihofer