Safety closure for steam pressure coffee machine water reservoir

Details Safety closure for steam pressure coffee machine water reservoir Safety closure for steam pressure coffee machine water reservoir

1991-06-21

1993-06-01

Hepperle, Stephen M.

Fluid handling

Line condition change responsive valves

Direct response valves

137588, 137599, 251 83, F16K 1518

Patent

active

052151190

ABSTRACT:
A safety closure for a water reservoir of a coffee maker includes a disc-shaped stopper fitted to a wide hole formed in a mouth of the water reservoir. A rod projecting upwards from the hole and extending through a guide bush with a play is connected to the stopper. The guide bush is mounted coaxially to the hole. The stopper tends to a closed position due to pressure in the water reservoir if such exists, and also due to the action of a spring which urges the rod upwards, either directly or through an arm or a push-button which must be pressed by hand in order to open the valve during the filling operation, the latter being made easier by a funnel which can be sealed with a cover.

REFERENCES:
patent: 1541757 (1925-06-01), Allen
patent: 1884991 (1932-10-01), Gerdts
patent: 3495622 (1970-02-01), Rose
patent: 3987812 (1976-10-01), Nelson

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