Coffee maker with improved hot water pump

Foods and beverages: apparatus – Beverage – Infusors

Patent

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Details

99300, 99310, A47J 31057

Patent

active

039968464

ABSTRACT:
The hot water pump of a coffee maker includes a water heating chamber and heating means therefor, a vertical hot water lift tube which extends upwardly from the water heating chamber, a pair of check valve discs on the bottom portion of the vertical lift tube which cover the top of the water heating chamber, a horizontal hot water transfer conduit coupled to the top of the vertical lift tube and extending transversely over the coffee pot stand with an outlet for discharging the hot water into a coffee basket on top of a coffee pot, means for removably connecting the water transfer conduit to the coffee maker housing at a point intermediate the ends of the water transfer conduit, and spring means surrounding the vertical lift tube and bearing at the bottom end on the uppermost check valve disc or on a ridge on the tube and bearing at the top end on the end of the transfer conduit which is coupled to the vertical lift tube, thereby removably locking the water pump structure in a predetermined position within the coffee maker housing and sealing the check valve.

REFERENCES:
patent: 2549132 (1951-04-01), Robbiati
patent: 2756667 (1956-07-01), Burns
patent: 2801326 (1957-07-01), Sullivan
patent: 2846938 (1958-08-01), Brandl
patent: 3358583 (1967-12-01), Lepoix et al.
patent: 3384004 (1968-05-01), Perlman et al.
patent: 3759161 (1973-09-01), Anderson
patent: 3793933 (1974-02-01), Weber
patent: 3844206 (1974-10-01), Weber
patent: 3869968 (1975-03-01), Ihlenfeld
patent: 3902408 (1975-09-01), Fuhner

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