Patents by Inventor John Curtis Belknap

John Curtis Belknap 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).

  • Rack locator for billiards table
    Patent number: 6629897
    Abstract: A rack for a billiards table includes an indicator that produces an indication signal when the rack is properly positioned on a billiards table. The rack may include a device that produces a light beam. The rack may also include a diffuser or a photodetector that creates a signal when it receives a light beam. The light beam may be reflected back from an element positioned on the table or may emanate from the table.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: October 7, 2003
    Inventor: John Curtis Belknap
  • Rack locator for billiards table
    Publication number: 20020032068
    Abstract: A rack for a billiards table includes an indicator that produces an indication signal when the rack is properly positioned on a billiards table. The rack may include a device that produces a light beam. The rack may also include a diffuser or a photodetector that creates a signal when it receives a light beam. The light beam may be reflected back from an element positioned on the table or may emanate from the table.
    Type: Application
    Filed: May 31, 2001
    Publication date: March 14, 2002
    Inventor: John Curtis Belknap