Patents by Inventor George Persak, Jr.

George Persak, Jr. 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).

  • Patent number: 4021213
    Abstract: This invention teaches a food storage refrigeration cabinet suited for operation either on a conventional refrigeration cycle or on a fast cool down refrigeration cycle. The disclosed cabinet has partition structure that separates a food storage space from a defined plenum, and the evaporator coil of the refrigeration system is located inside the plenum. The partition has inboard and outboard openings to define recirculating air flow paths over the evaporator coil from and to the food storage space. For use of the cabinet on a conventional refrigeration cycle, first fan means in the inboard openings draws air from the storage space and passes the same over the evaporator coil for discharge out the outboard openings back to the storage space, and the refrigeration system is cycled on and off in order to maintain the enclosure air within the proper temperature range.
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: May 3, 1977
    Assignee: McGraw-Edison Company
    Inventors: Graham B. Neidhardt, George Persak, Jr.