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Apparatus for making a coffee beverage

  • US 4,306,492 A
  • Filed: 07/25/1979
  • Issued: 12/22/1981
  • Est. Priority Date: 04/07/1977
  • Status: Expired due to Term
First Claim
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1. Apparatus for the production of a coffee beverage from dry coffee powder contained in a filter bag comprising a drinking cup having an upper edge, a generally cylindrical wall and a closed bottom, and a perforated partition extending transversely within said cup to form an intermediate horizontal wall spaced above the bottom of said cup, said intermediate wall and the bottom of said cup defining a chamber adapted to contain the filter bag, said chamber being surrounded by a substantially cylindrical wall portion, said cylindrical wall portion being corrugated along circumferential fold lines to form a bellows permitting the bottom to be pumped relative to the intermediate wall, whereby on filling said cup with water, and pumping said bottom wall water is caused to flow in a current through said intermediate wall and through said filter bag.

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