Method and apparatus for preparing a beverage

Details Method and apparatus for preparing a beverage Method and apparatus for preparing a beverage

1994-05-27

1996-03-05

Jenkins, Robert W.

Foods and beverages: apparatus

Beverage

Infusors

99285, 99287, 99289R, A47J 3134

Patent

active

054957931

ABSTRACT:
There is described an apparatus for preparing a beverage, in particular coffee, of the type wherein an electric motor drives a piston in a filling chamber. In accordance with the invention, the motor power is controlled with a closed loop control, so that the rotational speed can be held constant and the attainment of an end position of the piston can be detected from the increase of the motor power required, without requiring elements mounted on parts which are to be cleaned regularly.
Preferably, the apparatus is adapted to slightly press the coffee powder by means of the piston, and to slightly squeeze out the residual dregs, after the coffee-making process has ended, by means of the piston.

REFERENCES:
patent: 3266410 (1966-08-01), Novi
patent: 4797296 (1989-01-01), Meier
patent: 5083503 (1992-01-01), Hattem
Patent Abstract of Japan, vol. 017, No. 211 (C-1052) 26 Apr. 1993 & JP,A,04 352 915 8 Dec. 1992.

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