Apparatus for preparing hot drinks
First Claim
1. Apparatus for multi-cup brewing of ground coffee comprising:
- a reusable filter pan having an inwardly directed shoulder and a part in the shape of a reverse truncated cone extending donwardly from said shoulder anda disposable filter cartridge containing ground coffee having an upper outwardly directed flange which rests loosely on said shoulder thus supporting said filter cartridge without clamping said cartridge in said pan and a part in the shape of a reverse truncated cone extending downwardly from said shoulder with an outside surface cooperating with and having substantially equal concavity as said filter pan part and slightly less radial diameter than said filter pan part the space between said parts is such that, when hot brewing water is poured into said pan and enters the space, a capillary seal is formed which prevents additional hot brewing water from thereafter bypassing said cartridge.
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Accused Products
Abstract
Apparatus for brewing, in particular, a multiplicity of consumption units a hot drink, such as coffee. The apparatus comprises a combination of a filter pan and a disposable filter cartridge with cellulose web filters. According to the invention, the filter cartridge and the filter pan have parts cooperating to provide a circumferential seal, dimensioned so that when introduced the filter cartridge rests loosely in the filter pan without being clamped therein, and a seal is provided by means of capillary forces that occur during brewing in the gap between the cooperating parts. The filter cartridge may have an axially symmetrical body, and the parts of the filter pan and the filter cartridge co-operating to provide a seal may have a substantially equal axially symmetrical conicity.
100 Citations
5 Claims
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1. Apparatus for multi-cup brewing of ground coffee comprising:
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a reusable filter pan having an inwardly directed shoulder and a part in the shape of a reverse truncated cone extending donwardly from said shoulder and a disposable filter cartridge containing ground coffee having an upper outwardly directed flange which rests loosely on said shoulder thus supporting said filter cartridge without clamping said cartridge in said pan and a part in the shape of a reverse truncated cone extending downwardly from said shoulder with an outside surface cooperating with and having substantially equal concavity as said filter pan part and slightly less radial diameter than said filter pan part the space between said parts is such that, when hot brewing water is poured into said pan and enters the space, a capillary seal is formed which prevents additional hot brewing water from thereafter bypassing said cartridge. - View Dependent Claims (2, 3, 4, 5)
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Specification