Patents by Inventor James A. Thomas, III

James A. Thomas, III 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 security apparatus
    Patent number: 4759577
    Abstract: A door security apparatus for preventing undesired opening of a door includes a rockshaft journaled for pivotal movement at the bottom edge of the door and having at least one stop arm extending therefrom is disclosed. An operating device is connected to the rockshaft or to a stop arm for pivoting the rockshaft to move the stop arm into and out of door bracing engagement with the floor proximate the door.
    Type: Grant
    Filed: November 3, 1986
    Date of Patent: July 26, 1988
    Inventor: James A. Thomas, III
  • Door security apparatus
    Patent number: 4666195
    Abstract: A door security apparatus for preventing unauthorized opening of a door includes a rockshaft journalled for pivot movement at the bottom edge of the door and having at least one stop arm extending therefrom. An operating device is connected to the rockshaft for pivoting the rockshaft to move the stop arm into and out of door bracing engagement with the floor proximate the door.
    Type: Grant
    Filed: September 30, 1985
    Date of Patent: May 19, 1987
    Inventor: James A. Thomas, III