Patents by Inventor Arthur Joseph Elftmann, JR.

Arthur Joseph Elftmann, JR. 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).

  • Publication number: 20230400272
    Abstract: A quick-release take-down assembly for a weapon, including a quick-release, spring-loaded cam lever or handle, or a set of clips, that enables a handler to quickly and efficiently release the upper assembly from the lower assembly to access the bolt, carrier, and other components of the weapon for cleaning and other purposes. The quick-release system eliminates the need for standard, sliding take-down pins that can become stuck, require detent pins/springs in order to stay in place, require tools, and/or become misaligned.
    Type: Application
    Filed: May 24, 2023
    Publication date: December 14, 2023
    Inventor: Arthur Joseph Elftmann, JR.
  • Publication number: 20230331138
    Abstract: A tie down clamp comprises two U-shaped pieces interconnected via roll pins or similar mechanisms, wherein a cam arm is pivotally mounted on an axle between the two U-Shaped pieces. A double torsion spring wraps around the axle with the “hook” of the spring pressing against the cam arm when engaged. The cam arm includes a bore sized to accommodate a hook as may be found on a load securing mechanism. The bore may be beveled on each side to prevent “sharp edges” from being formed by the load securing mechanism. The bore is close to the pivot point of the cam arm. The cam arm includes a protrusion at the bottom so that the point of contact with the trailer angle iron, when the cam arm is engaged, is toward the end of the cam arm and offset from the vertical plane that runs through the axle roll pin.
    Type: Application
    Filed: June 26, 2023
    Publication date: October 19, 2023
    Inventor: Arthur Joseph Elftmann, Jr.
  • Patent number: 11691558
    Abstract: A tie down clamp comprises two U-shaped pieces interconnected via roll pins or similar mechanisms, wherein a cam arm is pivotally mounted on an axle between the two U-Shaped pieces. A double torsion spring wraps around the axle with the “hook” of the spring pressing against the cam arm when engaged. The cam arm includes a bore sized to accommodate a hook as may be found on a load securing mechanism. The bore may be beveled on each side to prevent “sharp edges” from being formed by the load securing mechanism. The bore is close to the pivot point of the cam arm. The cam arm includes a protrusion at the bottom so that the point of contact with the trailer angle iron, when the cam arm is engaged, is toward the end of the cam arm and offset from the vertical plane that runs through the axle roll pin.
    Type: Grant
    Filed: November 18, 2021
    Date of Patent: July 4, 2023
    Inventor: Arthur Joseph Elftmann, Jr.
  • Patent number: 11614293
    Abstract: Trigger module securing apparatus using internally threaded pins and threaded fasteners to secure a trigger module into the lower receiver of a rifle.
    Type: Grant
    Filed: January 11, 2022
    Date of Patent: March 28, 2023
    Inventor: Arthur Joseph Elftmann, Jr.
  • Publication number: 20220153183
    Abstract: A tie down clamp comprises two U-shaped pieces interconnected via roll pins or similar mechanisms, wherein a cam arm is pivotally mounted on an axle between the two U-Shaped pieces. A double torsion spring wraps around the axle with the “hook” of the spring pressing against the cam arm when engaged. The cam arm includes a bore sized to accommodate a hook as may be found on a load securing mechanism. The bore may be beveled on each side to prevent “sharp edges” from being formed by the load securing mechanism. The bore is close to the pivot point of the cam arm. The cam arm includes a protrusion at the bottom so that the point of contact with the trailer angle iron, when the cam arm is engaged, is toward the end of the cam arm and offset from the vertical plane that runs through the axle roll pin.
    Type: Application
    Filed: November 18, 2021
    Publication date: May 19, 2022
    Inventor: Arthur Joseph Elftmann, JR.
  • Publication number: 20220136792
    Abstract: Trigger module securing apparatus using internally threaded pins and threaded fasteners to secure a trigger module into the lower receiver of a rifle.
    Type: Application
    Filed: January 11, 2022
    Publication date: May 5, 2022
    Inventor: Arthur Joseph Elftmann, JR.
  • Patent number: 8881442
    Abstract: A dual trigger assembly for a rifle. The assembly includes the major components of the dual trigger and a trigger guard that is formed to accommodate the dual trigger. The dual trigger assembly may replace a single trigger assembly without the need for machining the rifle that will be provided with the dual trigger assembly.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: November 11, 2014
    Inventor: Arthur Joseph Elftmann, Jr.
  • Publication number: 20130192116
    Abstract: A dual trigger assembly for a rifle. The assembly includes the major components of the dual trigger and a trigger guard that is formed to accommodate the dual trigger. The dual trigger assembly may replace a single trigger assembly without the need for machining the rifle that will be provided with the dual trigger assembly.
    Type: Application
    Filed: January 24, 2013
    Publication date: August 1, 2013
    Inventor: Arthur Joseph Elftmann, JR.