Patents by Inventor Philip M. Waldorf

Philip M. Waldorf 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).

  • Anti-roosting device
    Patent number: 7351913
    Abstract: An anti-roosting device is disclosed. The device includes a track, an electrical conductor, and an electrical source. The conductor is embedded within the track, with a portion of the conductor left exposed. The electrical source provides low amperage at high voltage to the electrical conductor such that the device is harmless to both birds and humans, but will deliver a shock that is effective in keeping birds from roosting thereon. The anti-roosting device may be provided in the form of a ledge or shade having a groove formed therein into which the track and other components are placed.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: April 1, 2008
    Assignee: Bell Environmental Services, Inc.
    Inventors: Philip M. Waldorf, Heath A. Waldorf
  • Anti-roosting device
    Patent number: 6933446
    Abstract: An anti-roosting device is disclosed. The device includes a track, an electrical conductor, and an electrical source. The conductor is embedded within the track, with a portion of the conductor left exposed. The electrical source provides low amperage at high voltage to the electrical conductor such that the device is harmless to both birds and humans, but will deliver a shock that is effective in keeping birds from roosting thereon.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: August 23, 2005
    Assignee: Bell Environmental Services
    Inventors: Philip M. Waldorf, Sean Smith