Filter for rapid extraction of the aromatic substances of a prod

Details Filter for rapid extraction of the aromatic substances of a prod Filter for rapid extraction of the aromatic substances of a prod

1992-05-18

1994-07-05

Savage, Matthew O.

Liquid purification or separation

Filter

Receptacle and modified spacing surface or support for...

210477, 2104972, 99295, B01D 2710

Patent

active

053264720

ABSTRACT:
In an apparatus such as an electric coffee-maker, a filter (5) is placed at the bottom of a vessel (3) containing the product to be treated such as ground coffee. Resilient tongues (18) cut in the filter are disposed at uniform intervals about the center so as to form normally-closed orifices (17). When a predetermined pressure of liquid such as hot water is attained within the vessel, the orifices are freed to a sufficient extent to permit filtration of the liquid which has been in contact with the product.

REFERENCES:
patent: 2483000 (1949-09-01), Brant
patent: 4255265 (1981-03-01), Greutert
patent: 4256585 (1981-03-01), Greutert
patent: 4650583 (1987-03-01), Bondarini
patent: 4765896 (1988-08-01), Hartley et al.
patent: 4867875 (1989-09-01), Perania

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