Patents by Inventor Jerry M. Cunningham

Jerry M. Cunningham 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).

  • Safety device for preventing the unauthorized firing of a weapon by releasing the hammer spring
    Patent number: 4672763
    Abstract: A safety device for preventing the unauthorized firing of a weapon, such as a pistol. The device has a hammer, a handle, and a leaf spring inside of the handle. The leaf spring places tension on the hammer, when the weapon is enabled. The leaf spring is held by a stop member, which is movable. When the stop member is moved to a lower position, the spring is released, and the weapon is disabled. The stop member is moved by a strap and a ring, connected to the stop member. The handle must be taken apart in order to return the spring and the stop member to the enabled condition.
    Type: Grant
    Filed: August 21, 1986
    Date of Patent: June 16, 1987
    Inventor: Jerry M. Cunningham