Patents by Inventor Ben L. Nelson

Ben L. Nelson 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).

  • Door stop mechanism
    Patent number: 4395065
    Abstract: The door stop mechanism wedges beneath the door knob of a closed door and against the floor to prevent the door from being opened from the outside. An over-center effect of the mechanism assures a positive lock securing position and an angular slot arrangement provides a foldable rigid mechanism without the use of other pins or fixing devices.
    Type: Grant
    Filed: August 31, 1981
    Date of Patent: July 26, 1983
    Inventors: Ben L. Nelson, Leonard L. Hayes