Patents by Inventor Slobodan Davidovic

Slobodan Davidovic 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).

  • Publication number: 20050100430
    Abstract: A utility cart unloading system that is both functional and necessary. The system includes lifting platform that fits inside dimension of a cart and is attached with two sheets of canvas on each side to two steel tubes which are than installed into a metal frame that fits onto the top rim of a cart. An electrical DC motor rotates the steel tubes clockwise and counterclockwise simultaneously by means of chain transmission in the same direction at the same time and at the same speed and is controlled by rocker switch. By winding the canvas around the steel tubes, the lifting platform travels up and the contents of the cart are lifted.
    Type: Application
    Filed: October 23, 2003
    Publication date: May 12, 2005
    Inventor: Slobodan Davidovic
  • Patent number: 6824223
    Abstract: A utility cart unloading system that is both functional and necessary. A canvas sling is attached to a steel tube which is installed into a frame that fits on the top rim of a cart. Rotation clockwise/counterclockwise of the steel tube is provided by an electrical tubular motor and controlled by a rocker switch. Lifting of the contents of a cart is provided by winding one side of a canvas sling around the steel tube. The other side of the canvas sling is attached to the frame opposite the steel tube.
    Type: Grant
    Filed: June 13, 2002
    Date of Patent: November 30, 2004
    Assignee: EZ Lift Backsaver, Inc.
    Inventor: Slobodan Davidovic
  • Publication number: 20030230924
    Abstract: The patent is technical in nature. It is heavy duty canvas in the steel frame. Frame is placed on top of the cart. One side of the canvas is fixed to the frame and the other end is attached to a steel tube-powered by tubular electric motor. Unwinding the canvas around the tube canvas goes to the bottom of the cart so that it can be loaded with laundry, and winding it in opposite direction bringing up the contest of the cart. If let work with button pressed all the time it will virtually unload itself.
    Type: Application
    Filed: June 13, 2002
    Publication date: December 18, 2003
    Inventor: Slobodan Davidovic