Patents by Inventor Sheldon Greenbaum

Sheldon Greenbaum 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).

  • Wall expansion device with anchoring socket
    Patent number: 4422813
    Abstract: A device to secure an ornament or fixture to the surface of a panelled wall which device is inserted, made immobile and is easily removed from a surface-to-surface boring in the wall, characterized by a multi-part, longitudinally collapsible shaft with anchoring socket, the die-cut, weakened sides of which, when fitted into the wall and when driven clockwise at its tapered threaded base by a removable screw, compress and widen under the force generated by the screw to expand and tighten against the interior surface of the wall furthest from the point of insertion thereby preventing movement of the socket when it is located inside the wall boring, having also the means for removal by the introduction of a rigid insert of a length to reach the tapered, compressed section of the multi-part shaft so that separation of the expanded section of the shaft from the unexpanded section of the shaft occurs when the protruding end of the insert is struck with sufficient force to unsnap the parts of the shaft and the expan
    Type: Grant
    Filed: March 5, 1981
    Date of Patent: December 27, 1983
    Inventor: Sheldon Greenbaum
  • Receptacle to transport and display an artist's framed canvas
    Patent number: 4248000
    Abstract: An enclosed device for the safe transport of an artist's freshly painted framed canvas immediately after paint has been applied to the surface of the canvas and before the paint has undergone drying by any natural or artificial means, which device protects the canvas from smearing against the interior sides of the device and provides protection from the natural elements, characterized by an enclosed rectangular receptacle with a handle above for carrying and having a transparent front panel fixed by a flexible hinge along the top of the receptacle so that the transparent panel swings downwards and fastens along the bottom of the receptacle and with the interior of the receptacle fitted with a thin, rigid material slanted on an acute angle, secured at the top and bottom of the receptacle's interior so that the slanted material supports an artist's canvas and prevents forward or lateral movement of the canvas by means of a restraining device along the bottom edge of the slanted material and also prevents forwar
    Type: Grant
    Filed: April 16, 1979
    Date of Patent: February 3, 1981
    Inventor: Sheldon Greenbaum