Patents by Inventor Steven J. Chambers

Steven J. Chambers 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).

  • Patent number: 7845441
    Abstract: An advanced control for a powered hand truck. The powered hand truck includes an electric motor, a power source, a programable motor controller, and a transaxle, which are adaptable to existing hand trucks, or may be integrated into a new powered hand truck. The motor controller controls the motor to provide consistent speed independent of load weight or incline, and further provides regenerative braking. The advanced control may be wired or wireless and provides a touch sensitive circuit to command stop if the operator is not holding the handle, and an electronic potentiometer. The wireless control further includes a unique code for validating speed commands and initiates deceleration if the control signal is lost.
    Type: Grant
    Filed: August 28, 2006
    Date of Patent: December 7, 2010
    Inventor: Steven J. Chambers
  • Patent number: 7163213
    Abstract: A powered hand truck for assisting in the movement of objects. The powered hand truck includes an electric motor, a power source, a programable motor controller, and a transaxle, which are adaptable to existing hand trucks, or may be integrated into a new powered hand truck. The transaxle includes a differential allowing easy maneuvering of the hand truck. Power is provided by replaceable/rechargeable batteries. The motor controller controls the motor to provide consistent speed independent of load weight or incline, and further provides regenerative braking. The motor controller also includes diagnostics communicated through a display mounted to the hand truck.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: January 16, 2007
    Assignee: IndustryAssist
    Inventor: Steven J. Chambers
  • Patent number: D546524
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: July 10, 2007
    Inventor: Steven J. Chambers