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Infusion apparatus and method

  • US 3,918,355 A
  • Filed: 03/04/1974
  • Issued: 11/11/1975
  • Est. Priority Date: 08/24/1972
  • Status: Expired due to Term
First Claim
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1. Apparatus for dispensing a quantity of a heated liquid comprising:

  • a. a chamber adapted to contain a liquid to be heated, said chamber including an upper portion, open at its top, and a narrower lower portion having an outlet at its bottom;

    b. means for heating the liquid in said chamber;

    c. a weight movable from an upper position within said upper portion and above the surface of the liquid to a lower position at the bottom of said chamber, said weight fitting closely within the lower portion and thereby as it descends closing the top of the lower portion and forcing the heated liquid under pressure through the outlet;

    d. latch means movable between a latching position in which it holds the weight in its upper position and a retracted position in which the weight is free to descend;

    e. means biasing said latch means toward its latching position;

    f. means responsive to the temperature of the heated liquid; and

    g. mechanical means operable by the temperature responsive means when the liquid has been heated to the predetermined temperature to move said latch to its retracted position against the force of said biasing means, thereby allowing the weight to descend to its lower posiition, and forcing the heated liquid through said outlet.

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