Patents by Inventor John Duffner

John Duffner 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).

  • Selectable lug handgrip mount for a firearm
    Patent number: 11536539
    Abstract: A mount for a firearm allows a user to selectively mount a handgrip to a barrel end of the firearm. Preferred embodiments mount to a Picatinny rail of the firearm. The mount includes a rotatable lug body that is carried within an internal cavity of the body of the mount. Differing lugs corresponding to differing handgrip types are disposed on the lug body. The user simply rotates the lug body within the mount to select a desired lug corresponding to a desired handgrip. The handgrip may then be secured to the selected lug. When the user wants to secure a different handgrip, the first handgrip may be removed, the lug body rotated, and another handgrip is secured to the another lug.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: December 27, 2022
    Inventor: John Duffner
  • SELECTABLE LUG HANDGRIP MOUNT FOR A FIREARM
    Publication number: 20210333069
    Abstract: A mount for a firearm allows a user to selectively mount a handgrip to a barrel end of the firearm. Preferred embodiments mount to a Picatinny rail of the firearm. The mount includes a rotatable lug body that is carried within an internal cavity of the body of the mount. Differing lugs corresponding to differing handgrip types are disposed on the lug body. The user simply rotates the lug body within the mount to select a desired lug corresponding to a desired handgrip. The handgrip may then be secured to the selected lug. When the user wants to secure a different handgrip, the first handgrip may be removed, the lug body rotated, and another handgrip is secured to the another lug.
    Type: Application
    Filed: May 27, 2021
    Publication date: October 28, 2021
    Inventor: John Duffner
  • Selectable lug handgrip mount for a firearm
    Patent number: 11054222
    Abstract: A mount for a firearm allows a user to selectively mount a handgrip to a barrel end of the firearm. Preferred embodiments mount to a Picatinny rail of the firearm. The mount includes a rotatable lug body that is carried within an internal cavity of the body of the mount. Differing lugs corresponding to differing handgrip types are disposed on the lug body. The user simply rotates the lug body within the mount to select a desired lug corresponding to a desired handgrip. The handgrip may then be secured to the selected lug. When the user wants to secure a different handgrip, the first handgrip may be removed, the lug body rotated, and another handgrip is secured to the another lug.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: July 6, 2021
    Inventor: John Duffner
  • SELECTABLE LUG HANDGRIP MOUNT FOR A FIREARM
    Publication number: 20210018299
    Abstract: A mount for a firearm allows a user to selectively mount a handgrip to a barrel end of the firearm. Preferred embodiments mount to a Picatinny rail of the firearm. The mount includes a rotatable lug body that is carried within an internal cavity of the body of the mount. Differing lugs corresponding to differing handgrip types are disposed on the lug body. The user simply rotates the lug body within the mount to select a desired lug corresponding to a desired handgrip. The handgrip may then be secured to the selected lug. When the user wants to secure a different handgrip, the first handgrip may be removed, the lug body rotated, and another handgrip is secured to the another lug.
    Type: Application
    Filed: May 29, 2020
    Publication date: January 21, 2021
    Inventor: John Duffner