Patents by Inventor Doug Sims

Doug Sims 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).

  • Traffic signal with visible indication in a direction other than direct line of sight
    Patent number: 6144317
    Abstract: A light pipe is configured to pass light from a selected light source, such as the green, amber or red light on a traffic signal light to the left, right or rear of the traffic signal light to provide a visual indication of the selected traffic signal light from a remote location where the traffic signal light is not directly visible to the police officer monitoring compliance with traffic laws. The light pipe is secured to the traffic signal light housing by any conventional method, and does not interfere with the normal operation of the traffic signal light.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: November 7, 2000
    Inventor: Doug Sims