Patents by Inventor Fredrick A. Rothwell

Fredrick A. Rothwell 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).

  • Cyclone furnace with increased tube wall material
    Patent number: 5273003
    Abstract: A cyclone furnace includes a cyclone cylinder having five separate tubular water circuit panels which are serviced by substantially independent lower inlet upper outlet header segments. One hundred and twenty three tubes each having a 1.125" OD and 0.210" MWT replaces 134 smaller OD and thinner MWT tubes of the prior art, for increasing the available sacrificial material by more than a factor of two, without substantially increasing pressure drop in the forced circulation system.
    Type: Grant
    Filed: November 4, 1992
    Date of Patent: December 28, 1993
    Assignee: The Babcock & Wilcox Company
    Inventor: Fredrick A. Rothwell