Patents by Inventor Daniel Patrick Zaenglein

Daniel Patrick Zaenglein 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).

  • Damper tube closure
    Patent number: 5990441
    Abstract: A closed end tube particularly for use in a vehicle suspension damper includes a tubular body with an attachment fitting fixed to the end of the tube where the closed end of the tube is manufactured according to a multi-step process. Initially, the process commences with a tubular body having an opening at both ends. One of the ends is formed so that the tube is partially closed with a reduced opening remaining. An attachment fitting is forced against the partially closed end of the tube to completely close the end and a welding operation is used to fix the attachment fitting to the now closed end of the tube.
    Type: Grant
    Filed: December 8, 1997
    Date of Patent: November 23, 1999
    Assignee: General Motors Corporation
    Inventors: Daniel Patrick Zaenglein, Eric John Roszman, Craig Thomas Lehman