Patents by Inventor Rudolph M. Canfield

Rudolph M. Canfield 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).

  • Method to part welded vessel sections without violating internal cleanliness
    Patent number: 5655297
    Abstract: A method and apparatus of separating a vessel which is partly welded to a tubesheet of a tube bundle, includes removing the weld seam and reducing the wall thickness of the vessel until only approximately 1/8" of wall thickness remains and thereafter parting the vessel from the tubesheet by extruding the remaining wall thickness using a wheel cutter. The wheel cutter itself comprises a uniform thickness disk having a frusto-conical, cylindrical and subsequent conical portion on its outer periphery, the conical portion tapering to a greater extent that the frusto-conical portion.
    Type: Grant
    Filed: August 24, 1995
    Date of Patent: August 12, 1997
    Assignee: The Babcock & Wilcox Company
    Inventors: Harrison P. Randolph, Rudolph M. Canfield, William J. Bees