Electrical pulse counters – pulse dividers – or shift registers: c – Applications – Counting animate or inanimate entities
Patent
1990-02-14
1991-12-03
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Applications
Counting animate or inanimate entities
377 16, 194218, G07F 500, G06M 302
Patent
active
050705180
ABSTRACT:
A coin counting apparatus for a vending machine includes a down counter which is loaded with an initial count representing the number of coins to be deposited in order to initiate a vend cycle which initial count is decremented in response to each sequential coin detection. A display responsive to the current count of the counter indicates the number of coins yet to be deposited and a gate detecting the target count of zero is coupled to actuate relay contacts to signal the vending machine to initiate a vend cycle. An initialization circuit causes the loading of the initial count in response to either the detection of power up or the expiration of a predetermined time period, in the range of 1 to 10 minutes, after the last coin detection.
REFERENCES:
patent: 3841456 (1974-10-01), Levasseur
patent: 4258837 (1981-03-01), Manos et al.
patent: 4376479 (1983-03-01), Sugimoto et al.
patent: 4429778 (1984-02-01), Levasseur
patent: 4753625 (1988-06-01), Okada
Biren Steven R.
Heyman John S.
North American Philips Corp.
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