Patents by Inventor John D. Cluff

John D. Cluff 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: 5522472
    Abstract: A fall protection system for bridge construction includes a plurality of generally T-shaped cable supports securable to the concrete support columns of a bridle or overpass during construction. A plurality of cables are coupled between the T-shaped supports which receive a corresponding plurality of slidable safety belt attachments for use in securing a plurality of construction workers wearing appropriate safety harnesses to the overhead cables. Embodiments are shown in which the T-shaped cable supports are secured either to the extending reinforcement bar cages of each concrete support column or, alternatively, received directly within a suitably formed closed end bore within the concrete pier of the support column.
    Type: Grant
    Filed: November 3, 1994
    Date of Patent: June 4, 1996
    Inventors: Jack W. Shuman, Jr., John D. Cluff