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Portable self-contained cooler/freezer apparatus for use on airplanes, common carrier type unrefrigerated truck lines, and the like

  • US 5,337,579 A
  • Filed: 06/29/1992
  • Issued: 08/16/1994
  • Est. Priority Date: 11/12/1987
  • Status: Expired due to Fees
First Claim
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1. A shipping container for shipping frozen and/or refrigerated cargo in an unrefrigerated cargo area of a substantially larger transport vehicle comprising:

  • a) a container having an interior area with a volume to be loaded with the frozen and/or refrigerated cargo with an access opening that can be opened/closed;

    b) one or more refrigerant tanks mounted in the container for containing a cryogenic liquified refrigerant under pressure to be utilized for cooling the container interior;

    c) discharge piping means for piping liquified refrigerant from the tanks;

    d) valve means communicating with the discharge piping for valving the flow of liquified refrigerant that is discharged from the tank;

    e) temperature responsive controller means for opening the valve means to dispense liquified refrigerant from the tanks in order to maintain a desired preselected preset refrigerated or frozen temperature range within the container interior;

    f) wherein the liquified refrigerant converts to a gaseous phase downstream of the valve means; and

    g) an undercarriage portion at the lower end of the container that includes moving means for transporting the container quickly to and from the cargo area of an unrefrigerated vehicle having a substantially larger volume than the container volume.

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