Apparatus and process for extracting espresso coffee

Details Apparatus and process for extracting espresso coffee Apparatus and process for extracting espresso coffee

1990-05-07

1992-07-07

Jenkins, Robert W.

Foods and beverages: apparatus

Beverage

Infusors

99299, A47J 3124

Patent

active

051273187

ABSTRACT:
An improved process and apparatus for the extraction of espresso coffee from ground coffee beans in which the pressure of extraction is precisely regulated by a pressure valve and is not dependent on coffee grind size, degree of compaction of the coffee grind, or operator skill. A feature of the invention is in an assembly of the brewing chamber and regulator valve for convenient removal and attachment to an espresso machine as a unit without otherwise modifying the machine. The assembly is configurable with the regulator valve within a common housing which also defines the brewing chamber, or with a regulator valve separate from the brewing chamber assembly but attached to an outlet of the brewing chamber.

REFERENCES:
patent: 4136202 (1979-01-01), Favre
patent: 4667587 (1987-05-01), Wunder
patent: 4806375 (1989-02-01), Favre
patent: 4843955 (1989-07-01), Henn
patent: 4882982 (1989-11-01), Muttoni
"Espresso: a jewel of flavor", Jan. 1989 Tea & Coffee Trade Journal, pp. 30-34, by Shea Sturdivant.
"Physico-Chemical and Structural Characterisation of Espresso Coffee Brew"--XIII colloque ASIC: PAIPA (Colombia) Aug. 21-25 1989-p., 15 FIG., 5 tab. 16 ref.

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