Coin operated electronic parking meter

Details Coin operated electronic parking meter Coin operated electronic parking meter

1975-12-29

1977-06-28

Reeves, Robert B.

Check-actuated control mechanisms

Including noncontacting, relatively movable parts connected...

194DIG22, 340 51, G06F 900

Patent

active

040319911

ABSTRACT:
A coin operated electronic parking meter is disclosed. The meter employs a storage memory and two sets of counters. Responsive to the insertion of one or more coins, signals are generated which cause the memory to load a selected number into the first set of counters. The second set of counters are counted up while the first set counts down to zero to load the second set. After loading the meter shifts to a timing mode in which the second set of counters count down at a one count per minute rate. When the second set reaches zero, a flag is tripped indicating that the parking meter is in overtime. A maximum revenue producing circuit is also disclosed which displays the amount of time present on the meter only for the period immediately after the insertion of a coin.

REFERENCES:
patent: 3166732 (1965-01-01), Ljungman et al.
patent: 3917934 (1975-11-01), Goto
patent: 3930363 (1976-01-01), Rubenstein
patent: 3952850 (1976-04-01), Andersson et al.

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