DC-motor driven vending machine having simplified controls

Details DC-motor driven vending machine having simplified controls DC-motor driven vending machine having simplified controls

1996-11-01

1999-12-28

Martin, David S.

Electricity: motive power systems

With particular motor-driven load device

318103, 318112, 318490, 221 14, 221 18, 221129, 36447902, H02K 714

Patent

active

060085975

ABSTRACT:
A simplified wiring system for an electronically controlled vending machine of the type capable of vending multiple products out of columns, trays or other queuing means, wherein by employing DC motors and various novel circuits, one may reduce controller complexity and assembly time. Selector button sensing and motor drives are connected in a matrix configuration. Sold-out switches are connected in series with the motors. Home switches are connected in series and only momentary continuity interruption is sensed. Separate sold-out switch outputs are eliminated. Interconnect wiring is reduced by mounting both the Home switch and Sold-out switch for each motor on a motor interface board permitting operation of up to 16 motors from a 10-wire ribbon cable.

REFERENCES:
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patent: 4604557 (1986-08-01), Cowles
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patent: 4835412 (1989-05-01), Hudis et al.
patent: 5072164 (1991-12-01), Pruis et al.
patent: 5121854 (1992-06-01), Trouteaud et al.

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