Patents by Inventor Paul W. Winchell

Paul W. Winchell 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: 5408940
    Abstract: Apparatus providing an adjustable height work surface. A work table is cantilevered from posts supported for vertical motion inside columns from a base. A drive connected between the work table and the base changes the height of the work table and is located between the columns and posts. Each post carries a rack that engages with a pinion supported by a column for rotation about a common axis. A rigid shaft interconnects two pinions and prevents relative pinion rotation. A stabilizing structure in each column interacts with the post to maintain engagement between the rack and pinion structure and maintains the work table in a horizontal position during adjustment and use.
    Type: Grant
    Filed: June 25, 1992
    Date of Patent: April 25, 1995
    Inventor: Paul W. Winchell