Patents by Inventor Richard G. Gibb

Richard G. Gibb 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).

  • Variable speed warning device
    Patent number: 6211779
    Abstract: Method and apparatus for increasing the effectiveness of emergency signalling devices on vehicles. An emergency signalling device such as a flashing light is repeatedly operated at a frequency rate that corresponds to the speed of the vehicle. A minimum repetition rate is employed when the vehicle is slow or stopped so that the signal is not similarly halted, and a maximum rate is employed above a certain speed so that the repetition rate is not at too high of a frequency to be perceived.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: April 3, 2001
    Assignee: Federal Signal Corporation
    Inventors: Richard G. Gibb, Paul D. Graham