Coffee brewing machine

Details Coffee brewing machine Coffee brewing machine

1990-11-07

1993-02-16

Hornsby, Harvey C.

Foods and beverages: apparatus

Beverage

Infusors

99291, 99299, 219433, 392467, A47J 3124

Patent

active

051860961

ABSTRACT:
The coffee brewing machine can be used to prepare alternatively normal coffee or espresso coffee and comprises a boiler having a temperature control. The cold water is fed to the boiler by a water pump with adjustable feed rate. Two different brewing members are used for the preparation of the two kind of coffees, namely a sieve holder and a filter support which are connectable via a mounting and supporting flange to the boiler. A mode switch is assigned to the mounting and supporting flange which automatically changes the mode of operation of the coffee brewing machine upon exchanging the brewing member. Thereby, the feed rate of the water pump and the temperature of the hot water are adapted to optimize the conditions for preparing either normal coffee or espresso coffee.

REFERENCES:
patent: 3485162 (1969-12-01), Hopkinson
patent: 4242568 (1980-12-01), Wunderlin
patent: 4418614 (1983-12-01), Oota
patent: 4468406 (1984-08-01), d'Alayer
patent: 4484515 (1984-11-01), Illy
patent: 4608916 (1986-09-01), Becker
patent: 4653390 (1987-03-01), Hayes
patent: 4667584 (1987-05-01), Koyama
patent: 4713526 (1987-12-01), Smit
patent: 4744291 (1988-05-01), Wallin
patent: 4858523 (1989-08-01), Helbling
patent: 5014611 (1991-05-01), Illy

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