Patents Assigned to Raymond K. Newkirk
  • Temperature control apparatus
    Patent number: 4288271
    Abstract: A circuit arrangement for controlling the temperature of a thermoplastic bonding or cutting blade in which changes in the length of the blade caused by temperature variations are monitored and a signal is developed and fed back for controlling the amount of current flowing through the blade to thereby maintain its temperature at a desired preset level.
    Type: Grant
    Filed: May 27, 1980
    Date of Patent: September 8, 1981
    Assignee: Raymond K. Newkirk
    Inventors: Glenn M. Campbell, Jr., Raymond K. Newkirk