Patents by Inventor Charles L. Pryor

Charles L. Pryor 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).

  • Pneumatically operated scaffolding
    Patent number: 4944366
    Abstract: Pneumatic operated scaffolding is presented and includes a plurality of fluid operated cylinders to lift sheetrock or the like for ceiling joist attachment. The scaffolding includes a removable walk and adjustable legs for use in a variety of construction applications. Transverse braces having multiple joints, a removable work support frame, along with pivotable pneumatic cylinders allow the scaffolding to easily fold for compact storage and transportation purposes.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: July 31, 1990
    Assignee: D. L. Pryor & Sons, Inc.
    Inventors: Dewey L. Pryor, Charles L. Pryor