Patents by Inventor Thomas J. Vieweg

Thomas J. Vieweg 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).

  • Patent number: 8539706
    Abstract: A frame is adapted to be held by a user. A barrel is coupled to the base. A slide is slidably received on the barrel and adapted for rearward movement in response to firing. A full-time spring is operable for abating recoil during the entire rearward movement of the slide including primary and secondary portions of the rearward movement. A recoil reducer includes a part-time spring. The part-time spring is operable for abating recoil during the primary portion of the rearward movement. The recoil reducer also includes an engager. The engager is operable in response to movement of the slide between the primary and secondary portions of the rearward movement to terminate operation of the part-time spring.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: September 24, 2013
    Inventors: Thomas J. Vieweg, Virgil Tripp