Patents by Inventor David Robin Green

David Robin Green 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).

  • Solar-powered wireless crosswalk warning system
    Patent number: 7317405
    Abstract: A solar-powered crosswalk warning system is disclosed. The crosswalk warning system comprises two or more crosswalk warning beacons, located on opposite sides of the road. Each beacon comprises a solar panel to recharge a battery, a battery back, a control unit to charge the battery pack during daylight hours, a communication unit to communicate to the second crosswalk beacon, a traffic signal lamp ton warn oncoming traffic, and a triggering means by which the pedestrian can activate the beacons.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: January 8, 2008
    Assignee: Carmanah Technologies Corporation
    Inventors: David Robin Green, Jim Ward, Neil Wyper