Patents Assigned to Sean A. O'Brien
  • Patent number: 3958428
    Abstract: Open-ended food freezing chamber has low thermal mass and is unrefrigerated during standby or waiting time. Remote refrigeration source is fast operating with large refrigeration capacity for rapid chamber cooling. Water-containing juice or puree food material is deposited on the walls of the chamber after the chamber is cooled. The resulting frozen material is scraped off into a receiver. Thereupon refrigeration ceases and the chamber rises to ambient to permit the remaining food material to thaw and drain and to prevent the formation of rime ice.
    Type: Grant
    Filed: August 9, 1974
    Date of Patent: May 25, 1976
    Assignees: Joseph M. Yuhasz, Sean A. O'Brien
    Inventor: James W. Kelso