Device for the preparation of hot beverages by extraction

Details Device for the preparation of hot beverages by extraction Device for the preparation of hot beverages by extraction

1991-07-22

1993-03-30

Hornsby, Harvey C.

Foods and beverages: apparatus

Beverage

Infusors

99289R, A47J 3100

Patent

active

051973723

ABSTRACT:
A device for preparing hot beverages such as coffee by extraction having an extraction cup (5) movable from an outset position to an extraction position along a control track (2) in a mounting plate (1) by a movable holder (4). The extraction cup (5) is detachably secured to the movable holder (4). The extraction cup (5) is filled from a coffee grinding unit (3) and is then displaced along the horizontal portion (2') of the control track (2) laterally until it is located vertically below an extraction piston (11), whereupon it moves vertically upward. In this manner, the ground coffee is compressed. Simultaneously, through a hot water inlet neck (8), communication with a hot water heater (10) is established. After the extraction, a stop (15) is displaced beneath a tappet (7) supported in the extraction cup (5) and keeps the tappet at the top of the extraction cup (5) during the downward motion of the extraction cup (5). In the ensuing return motion of the extraction cup (5) to the outset position, the cup moves beneath a scraper (16) that cleans the filter (6) and scrapes off the filter cake.

REFERENCES:
patent: 3483811 (1969-12-01), Heier
patent: 3824913 (1974-07-01), Herman et al.
patent: 4271752 (1981-06-01), Valente et al.
patent: 4271753 (1981-06-01), Neely
patent: 4667586 (1987-05-01), Harada et al.
patent: 4709625 (1987-12-01), Layre et al.
patent: 4784050 (1988-11-01), Cavalli
patent: 4885986 (1989-12-01), Grossi

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