Patents by Inventor Peter C. Giefing

Peter C. Giefing 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).

  • Cam pin with roller for bolt carrier
    Patent number: 7930968
    Abstract: A bolt used in a self loading firearm employing a bolt carrier which in turn carries the bolt. The bolt includes a cam pin receptacle and a cam pin carried by the bolt. The cam pin includes a body having a received end and an exposed end. The received end is received in the cam pin receptacle with the exposed end extending outwardly from a surface of the bolt. A roller is rotatably coupled to the exposed end and rotatable around an axis of the body.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: April 26, 2011
    Inventor: Peter C. Giefing
  • CAM PIN WITH ROLLER FOR BOLT CARRIER
    Publication number: 20100319527
    Abstract: A bolt used in a self loading firearm employing a bolt carrier which in turn carries the bolt. The bolt includes a cam pin receptacle and a cam pin carried by the bolt. The cam pin includes a body having a received end and an exposed end. The received end is received in the cam pin receptacle with the exposed end extending outwardly from a surface of the bolt. A roller is rotatably coupled to the exposed end and rotatable around an axis of the body.
    Type: Application
    Filed: June 23, 2009
    Publication date: December 23, 2010
    Inventor: Peter C. Giefing