Coffee percolator
AssigneeWurttembergische Metallwarenfabrik
InventorsErwin Princz, Hans Motsch, Peter Pulvermuller
Life of this patent
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Abstract
Described is a coffee percolator having a coffee meal supply container mounted at an upper portion thereof, in which heating of the coffee meal supply by the heat of the coffee percolator and the resultant loss of volatile aroma substances are avoided. This is accomplished by providing a cooling system effective to cool the bottom of the supply container. In a preferred embodiment the supply container is cooled by means of air aspirated by a fan through an air flow path extending along the bottom of the supply container and subsequently returned to the environmental atmosphere.
Claims19
A coffee percolator having a supply container mounted at its upper portion for containing a supply of coffee, coffee meal metering means at the bottom portion of said supply container, a driving motor for driving said metering means, a cooling system adjacent the bottom portion of said supply container for reducing the thermal load on the coffee supply, said cooling system including a fan and at least one air flow path extending along at least one of the exterior of the bottom of said supply container and said driving motor, and an air circulation chamber accomodating said driving motor, wherein said air circulation chamber has an air inlet and further wherein the portion of said air flow path adjacent the air inlet is formed as a labyrinth the cross-sectional air inlet area of which is dimensioned in proportion to the aspiration capacity of said fan so as to avoid the aspiration of coffee meal from the outside.
A coffee percolator comprising:
- (a) a housing having an opening in its top;
- (b) a coffee supply container for containing a supply of coffee located above the opening in said housing;
- (c) a motor driven coffee metering means at the bottom of the supply container operable to meter coffee from the supply container into the percolator;
- (d) a chamber interposed below the supply container, configured to protect the supply container from any heat load directed at the supply container;
- (e) a cooling system in said chamber;
- and
- (f) coolant in said cooling system adapted to circulate through said chamber to reduce said heat load.
The coffee percolator of 16, wherein said saucer-shaped member is adapted to be received in the opening of said housing.
Dependencies are inferred from the claim text.