Patents by Inventor Gerald D. Gravdahl

Gerald D. Gravdahl 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).

  • Ammunition detector
    Patent number: 6343564
    Abstract: A self-contained ammunition round detection unit includes a housing with an indicator mounted within the housing. A probe is coupled to the indicator. A dual set of biasing elements are captivated within the housing. The dual set of biasing elements cooperate to retract the indicator in a biased state, and extend the indicator to indicate an ammunition round is present when the probe is at least partially retracted by contacting a surface of the ammunition round.
    Type: Grant
    Filed: July 26, 1999
    Date of Patent: February 5, 2002
    Assignee: Alliant Techsystems Inc.
    Inventors: J. Scott Miller, Gerald D. Gravdahl, Rodney D. Moser