Patents by Inventor Gene D. Krist

Gene D. Krist 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).

  • Hydronic interface system, method and apparatus
    Patent number: 5347825
    Abstract: A method and apparatus for coupling a primary loop with a secondary loop for circulating processing fluids therebetween comprising in combination: a first connection for the feed line of the primary loop and a second connection for the return line of the primary loop; a third connection for the feed line of the secondary loop and a fourth connection for the return line of the secondary loop; a crossover line coupling the four connections; first valve means for controlling the flow through the secondary loop; first sensor means responsive to the temperature associated with the secondary loop to control the first valve means; second valve means in the path of flow through the crossover line; and second sensor means responsive to the flow of the process fluid across the crossover line to control the second valve means.
    Type: Grant
    Filed: July 2, 1993
    Date of Patent: September 20, 1994
    Inventor: Gene D. Krist
  • Method and apparatus for controlling the flow of process fluids
    Patent number: 5318106
    Abstract: A method and apparatus for coupling a primary loop with a secondary loop for circulating processing fluids therebetween comprising in combination a first connection for the feed line of the primary loop and a second connection for the return line of the primary loop; a third connection for the feed line of the secondary loop and a fourth connection for the return line of the secondary loop; a crossover line coupling the four connections; first valve means for controlling the flow through the primary loop; first sensor means responsive to the flow across the crossover line to control the first valve means; second valve means in the path of flow through the crossover line; second sensor means responsive to the temperature of the process fluid in the secondary loop to control the second valve means; a common controller for the first and second sensor means adapted to control the first and second valve means as a function of the sensed temperature and flow; and a common controller for the first and second sensor
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: June 7, 1994
    Inventors: Donald K. Dorini, Gene D. Krist, Gerald F. Mannion, James R. Mannion