Patents by Inventor Douglas M. Bodrey

Douglas M. Bodrey 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).

  • Spiral flighted double walled heat exchanger
    Patent number: 5238058
    Abstract: A heat transfer coil and method of manufacture where a second piece of tubing is wound around a first piece of tubing while the first piece is straight, where the first piece of tubing is then formed to define the overall coil shape, and then the first and second pieces of tubing internally sized by internal pressurization to also force the two pieces of tubing into intimate contact with each other.
    Type: Grant
    Filed: March 18, 1991
    Date of Patent: August 24, 1993
    Inventors: Douglas M. Bodrey, Carl C. Hiller, Andrew L. Blackshaw, Glen P. Robinson, Jr.