Method for frothing liquids

CAFC
  • US 5,939,122 A
  • Filed: 02/24/1998
  • Issued: 08/17/1999
  • Est. Priority Date: 09/23/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for aerating a liquid comprising the steps of:

  • providing a container characterized by a height and a diameter, the height being at least two times the diameter, the container having an inside wall;

    placing the liquid into the container;

    introducing a rod terminating in a plunger into the liquid in said container so that the plunger contacts the liquid, the plunger comprising;

    a plunger body having a circumference; and

    a screen; and

    pumping the plunger by moving the rod in a vertical motion such that the plunger passes through the liquid in the container for a time sufficient to aerate the liquid until it takes on a frothy or foamy consistency,the plunger body further including means for holding the screen such that, as the plunger passes through the liquid, substantially no liquid passes between the circumference of the plunger body and the inside wall of the container.

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