Patents by Inventor Thomas Allan Ward

Thomas Allan Ward 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).

  • CURRENT CLAMPING PARALLEL BATTERY CHARGING SYSTEM TO SUPPLEMENT REGENERATIVE BRAKING IN ELECTRIC VEHICLE
    Publication number: 20110089904
    Abstract: To provide additional charge storage for an electric vehicle, an additional battery (100) is connected in parallel with a regenerative braking direct charged battery (22) through a current limiting or clamping circuit (104 or 120). The additional battery (100) is charged by an external charger such as a plug-in charger or a solar panel that supply minimal current to prevent generation of battery heat. Current flows from the additional battery (100) to the regenerative braking charged batteries (22) so that both batteries can be charged. However, when excessive charge is drawn to drive the vehicle electric motor (20), the current limiting or clamping circuit (104 or 120) serves to prevent the discharge of additional battery (100) from creating excessive heat in the additional battery (100).
    Type: Application
    Filed: December 22, 2010
    Publication date: April 21, 2011
    Inventor: Thomas Allan Ward
  • CURRENT LIMITING PARALLEL BATTERY CHARGING SYSTEM TO ENABLE PLUG-IN OR SOLAR POWER TO SUPPLEMENT REGENERATIVE BRAKING IN HYBRID OR ELECTRIC VEHICLE
    Publication number: 20080203966
    Abstract: To provide additional charge storage for an electric vehicle, an additional battery (100) is connected in parallel with a regenerative braking direct charged battery (22) through a current limiting circuit (104 or 120). The additional battery (100) is charged by an external charger such as a plug-in charger or a solar panel that supply minimal current to prevent generation of battery heat. Current flows from the additional battery (100) to the regenerative braking charged batteries (22) so that both batteries can be charged. However, when excessive charge is drawn to drive the vehicle electric motor (20), the current limiter circuit (104 or 120) serves to prevent the discharge of additional battery (100) from creating excessive heat in the additional battery (100).
    Type: Application
    Filed: October 23, 2007
    Publication date: August 28, 2008
    Inventor: Thomas Allan Ward