Patents by Inventor P. Trentis Durden

P. Trentis Durden 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: 7478852
    Abstract: A lifting apparatus includes an I-beam having a lower flange and an upper flange; a plurality of hoist connectors positioned on the I-beam extending upwardly from the upper flange; a center load connector positioned on the I-beam extending downwardly from approximately a midpoint along the lower flange; and at least two movable load connectors positioned on the I-beam extending downwardly from the lower flange, each movable load connector engaged with the I-beam by a plurality of support members having one or more wheels positioned to roll along upper surfaces of the lower flange, the center load connector being positioned between the at least two movable load connectors. An associated method includes providing the lifting apparatus; connecting a lifting machine to at least one of the hoist connectors; connecting a load to at least one of the load connectors; and lifting the load by using the lifting machine.
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: January 20, 2009
    Inventor: P. Trentis Durden