Patents by Inventor James D. Crosbie

James D. Crosbie 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).

  • Filling the annulus between concentric tubes with resin
    Patent number: 6045717
    Abstract: Concentric conduits are supplied for the purpose of minimizing heat transfer from within the inner conduit through the outer conduit. The air gap or annulus around the inner conduit is filled with a resin mixture which is mixed with vermiculite and mineral fiber to form a slurry. The slurry is pumped into an open end of the annulus to fill the annulus and enhance the heat insulation characteristics of the concentric conduits.
    Type: Grant
    Filed: February 10, 1998
    Date of Patent: April 4, 2000
    Assignee: Acoust-A-Fiber Research and Development, Inc.
    Inventors: Jerry M. Wolf, Hiten T. Shah, Steven J. Crosbie, James D. Crosbie