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Self-contained portable temperature-controlled chamber for medications and the like

  • US 4,407,133 A
  • Filed: 08/10/1981
  • Issued: 10/04/1983
  • Est. Priority Date: 08/10/1981
  • Status: Expired due to Fees
First Claim
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1. A personal, self-contained, manually portable temperature-controlled chamber for medications and the like, comprising:

  • an insulated housing having a cavity shaped to receive a receptacle of temperature-sensitive material therein;

    a thermoelectric element mounted in said housing, and having first and second heat-transfer faces;

    one of said faces being in heat-transfer relation with said housing cavity, for transferring heat therebetween;

    a heat exchanger connected with said housing, having a first portion thereof in heat-transfer relation with the other of said thermoelectric element heat-transfer faces, and a second portion thereof communicating with ambient atmosphere for exchanging heat therewith;

    a source of portable electric power mounted in said housing to provide a self-contained unit that can be hand-held and manually transported;

    said electrical power source being electrically connected with said thermoelectric element;

    means for reversing the polarity of the electric power applied to said thermoelectric element, whereby said thermoelectric element can selectively heat or cool said housing cavity to maintain the receptacle of temperature-sensitive material therein at a desired temperature range; and

    a multiple-set-point temperature controller apparatus mounted on said housing, including means for sensing the temperature in said housing cavity;

    said temperature controller apparatus having portions electrically connected between said electric power and said thermoelectric element to control electric current flow therebetween, and thereby automatically maintain the temperature within said housing cavity at the desired temperature range by selective heating and/or cooling.

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