Patents by Inventor Charles R. Barr

Charles R. Barr 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).

  • Patent number: 6883441
    Abstract: An incinerator room to store secret documents and destroy them automatically according to a burn sequence by spraying slow burning flammable liquid on the contents of said room from one or more reservoirs. A control circuit, preferably supplied with energy from a secure source such as a battery, controls the ignition sequence to spray the flammable liquid, then start ignition means and start an exhaust fan and open optional electrically operated shutters or flue. The electrically operated flue prevents unauthorized access to the room by humans or fiber optic spying apparatus via ingress through the chimney of the exhaust system. Pressurized reservoirs and electrically operated valves are used in the preferred embodiment.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: April 26, 2005
    Inventor: Charles R. Barr