Liquid purification or separation – Filter – Resting on supporting receiver – e.g. – portable
Patent
1989-01-27
1990-01-23
Fisher, Richard V.
Liquid purification or separation
Filter
Resting on supporting receiver, e.g., portable
210482, 21049701, 2104973, 222441, 426 82, 206 05, B01D 2320, B01D 2328
Patent
active
048956562
ABSTRACT:
A coffee filter for a coffee making apparatus, comprising a funnel or holder (1) for receiving a filter element containing ground coffee, said funnel having at least at its lower end an inclined wall section (2), an outflow opening (4) in said wall (2) for draining coffee brew into a container positioned under said funnel (1), a disc valve (18) for selectively closing said outflow opening (4), said valve (18) being controlled by control means comprising a slide (6) guided in a slit (5) provided in a vertical wall section (3) arranged opposite to said inclined wall section (2), said slide (6) having a grip (6') at the outer side and a cam (7) with an undulated surface (8), at the inner side of said vertical wall section (3), said disc valve (18) being connected to one end (17) of a lever (14), the other lever end (16) being designed as a cam follower cooperating with said undulating cam surface (8), a leaf spring (10) extending transversely across the space between the inclined wall section (2) and the vertical wall section (3) and biasing the lever (14) in the sense of closing the outflow opening (4).
REFERENCES:
patent: 778695 (1904-12-01), McEwen
patent: 892000 (1908-06-01), MacKaskie
patent: 1053316 (1913-02-01), Psikal
patent: 1361146 (1920-12-01), Egnatuff
patent: 1607530 (1926-11-01), Guest
patent: 2836300 (1958-05-01), Serr
patent: 4353484 (1982-10-01), Crawford
Fisher Richard V.
Michaelson Peter L.
Millard Wanda L.
Smitdesign B.V.
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