Patents by Inventor Robert H. Feldner

Robert H. Feldner 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: 5090725
    Abstract: The collapsible cart of this invention has a base frame on which are mounted wheels, at least two of which are casters. A lower end frame is pivotally mounted to the base frame at each end thereof. An upper end frame is telescopically mounted in each of the lower end frames to rise to a predetermined position and detachably lock in the raised position. A cross bar is pivotally mounted on one of the upper end frames and detachably mounted at the top of the other upper end frame. The structure is such that detachement, folding and locking are achieved to change the collapsible cart from a garment hanger type to a very small, low folded unit.
    Type: Grant
    Filed: August 6, 1990
    Date of Patent: February 25, 1992
    Inventor: Robert H. Feldner