Foods and beverages: apparatus – Beverage
Patent
1974-11-22
1976-08-17
Wilhite, Billy J.
Foods and beverages: apparatus
Beverage
99320, A23F 108
Patent
active
039747581
ABSTRACT:
A "pot life" of a quantity of coffee is substantially extended by materially reducing surface area exposure to atmosphere.
In the case of a conventional pour type coffee maker this is effected by isolating the main body of reservoir contained coffee from atmosphere by sealingly engaging a movable follower with respect to the reservoir to isolate the same from atmosphere while permitting pour dispensing of the coffee from a conventional pour spout of small cross-sectional area as compared to the cross-sectional area of the reservoir. The relatively small volume of coffee in the pour spout exhibits only a small surface area exposure to atmosphere and acts, in effect, as a liquid seal which, in cooperation with the movable follower, isolates the reservoir contained coffee from atmosphere.
In the case of a relatively large volumetric capacity urn type coffee maker having a conventional valved dispensing spigot, essentially the same effect can be achieved by employing a movable follower which has a small clearance with respect to the urn sidewall thus eliminating the necessity for effecting a seal between the follower and urn.
REFERENCES:
patent: 2196959 (1940-04-01), Crothers
patent: 2211486 (1940-08-01), Zoia
patent: 2403404 (1946-07-01), Scott
patent: 2772978 (1956-12-01), Shaw
patent: 3164289 (1965-01-01), Cocchiarella
patent: 3727793 (1973-04-01), Staubly
patent: 3781942 (1974-01-01), Coleman
Henderson Arthur O.
Wilhite Billy J.
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