Patents by Inventor Marc E. Raycraft

Marc E. Raycraft 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: 7021606
    Abstract: The present invention is a lightweight apparatus related generally to lifting heavy objects of construction materials by a single individual, such as panels of sheetrock to inside or outside walls, easily accommodating walls up to 12 feet in height, including angled walls. It is more particularly directed to raising panels of sheetrock to upper portions of a wall and holding the panel in place while an individual nails or screws the sheetrock to the wall studs. A triangular sling-like attachment secures a panel of drywall being lifted by turning the winch. Another attachment on the top section allows the apparatus to lean against the studded wall. The vertical panel lift allows the worker to handle with ease drywall panels that are ¼?, ??, ½? and ?? thick, in addition to holding in place drywall panels as large as 54? wide and 16 feet long.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: April 4, 2006
    Inventor: Marc E. Raycraft
  • Patent number: 6021722
    Abstract: Provided is a vertically adjustable desk lifting device having a plurality of gas pressurized cylinders for urging a desk in an upward direction, thereby facilitating the raising and lowering of a desk by a single user. The desk can be locked into a multitude of vertical positions and easily released via a foot pedal. The lifting device comprises a pair of spaced-apart gas pressurized cylinders positioned on both sides of a desk. The gas pressurized cylinders are chosen or calibrated to provide an adequate upward force to slightly urge the desk in the upward direction, depending upon the weight of the desk and the distribution of such weight. Additional gas pressurized cylinders can be easily inserted adjacent any one of the four standard gas pressurized cylinders to counterbalance the weight distribution of the desk if needed.
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: February 8, 2000
    Inventor: Marc E. Raycraft