Patents Assigned to Jeffrey E. Bonner
  • Controlled freeze seal for pipes
    Patent number: 6042120
    Abstract: Instead of applying the maximum cooling effect that can be produced, the method and apparatus disclosed applies only a carefully controlled cooling that is adequate to maintain the fluid in the pipe in a frozen condition but which maintains the temperature high enough to prevent damage to the metallurgical structure of the pipe. At the same time, the apparatus creates permanent documentation of the temperatures at selected stations along the pipe throughout the process, thereby providing proof that the pipe sustained no thermal damage.
    Type: Grant
    Filed: November 25, 1997
    Date of Patent: March 28, 2000
    Assignee: Jeffrey E. Bonner
    Inventor: Christopher J. Oles