Patents Represented by Attorney William David Diesel

Find this attorney in the Justia Lawyer Directory

  • Aerial bundle puller
    Patent number: 4869638
    Abstract: An aerial tube bundle puller for extracting a tube bundle from a heat exchanger is provided, comprising a cradle supporting a carriage frame and a power source, a sled, attachable to a tube bundle, with a hydraulic powered screw drive to propel the sled on the carriage frame, a hydraulic elevator slidable on the carriage frame for adjusting and supporting the tube bundle and an extension for adjusting the length of the carriage frame.
    Type: Grant
    Filed: November 4, 1987
    Date of Patent: September 26, 1989
    Assignee: Serv-Tech, Inc.
    Inventors: Richard W. Krajicek, Robert R. Cradeur