Patents by Inventor Joseph D. Berg

Joseph D. Berg 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: 7395886
    Abstract: A motorized cart collector for pulling two rows of carts in a forward direction over a surface includes a mobile body having a frame and a cart connector assembly. The cart connector assembly is pivotally connected to a rear end of the frame for pivotal movement about a vertical axis that is approximately perpendicular to the surface. The cart connector assembly includes first and second cart connectors that respectively configured to simultaneously attach to first and second lead carts. Also disclosed is a method of pulling two rows of carts using the cart collector.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: July 8, 2008
    Assignee: Gatekeeper Systems (HK) Limited
    Inventors: Jeffrey O. Berg, Joseph D. Berg
  • Patent number: 6070679
    Abstract: The present inventive device generally allows a user to easily engage and push or pull heavy and unwieldy object(s), most notably a line of nested shopping carts, effectively and without undue strain. The cart is designed specifically with universal utility in mind. The power is supplied by either an electrically driven motor or internal combustion engine. Power is transmitted to a transaxle with belts or an electric motor electronically controlled. A simple forward/reverse control via throttle handles causes cart movement and steering is achieved through dual rear castors. The front of the cart contains a receiver that allows easy attachment for a multitude of attachments for a variety of uses. A square tube fitment with a quick release device lets the cart be configured for different markets and easy field change. One such attachment is a shopping cart adapter, which attaches to the cart through the receiver connection.
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: June 6, 2000
    Assignee: Lindbergh Manufacturing, Inc.
    Inventors: David W. Berg, Joseph D. Berg, Dennis R. Johnson