Switch Heaters Patents (Class 126/271.2B)
  • Patent number: 6460536
    Abstract: A hydraulically powered rail pre-heater for heating rail ends before they are welded together, which includes a blower driven by a hydraulic motor for producing a substantially constant flow of air, a source for propane gas or other combustible media to be regulated and mixed and then delivered to a torch for the application of a flame to the rail ends.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: October 8, 2002
    Assignee: Matweld, Inc.
    Inventors: Ralph S. Story, Johnny D. Burnett