Timer with touch control

Details Timer with touch control Timer with touch control

1982-08-16

1984-08-21

Goldberg, E. A.

Electrical transmission or interconnection systems

Switching systems

Plural switches

307141, 361193, H01H 4300

Patent

active

044672225

ABSTRACT:
The timer controls a dispensing machine and in particular controls the dispensing cycle for a product such as coffee, a beverage, or instant mashed potatoes. The control includes regulation of the water portion of the cycle and the solid or powder portion of the cycle. The timer is controlled by a plurality of touch switches each coupling via a resistor network to the control logic of the timer. The control logic is preferably CMOS-type having a high input impedance permitting use of a resistor network of high resistance to limit current flow especially under fault. The touch switches control functions such as "hot water", "large portion", "small portion", "stop", and "push and hold".

REFERENCES:
patent: 4031408 (1977-04-01), Holz
patent: 4032931 (1977-06-01), Haker
patent: 4069659 (1978-01-01), Harris et al.
patent: 4085302 (1978-04-01), Zenk et al.
patent: 4119864 (1978-10-01), Petrizio
patent: 4159496 (1979-06-01), Stevens
patent: 4234801 (1980-11-01), Small

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