Fuel-dispensing system with self-checking means

Details Fuel-dispensing system with self-checking means Fuel-dispensing system with self-checking means

1979-01-18

1981-09-22

Spar, Robert J.

Dispensing

With recorder, register, indicator, signal or exhibitor

Plural

222 32, 222 36, 235 92EC, 235 92FL, 364464, B67D 508, G06F 1520

Patent

active

042905389

ABSTRACT:
A processor is used to control a price display unit for a fluid-dispensing system. The amount of fluid dispensed by the system in measured and information responsive thereto is fed to the processor. The processor calculates the cost of the dispensed fluid and those costs are then displayed. The processor automatically cross-checks the validity of the displayed cost with the amount of fluid dispensed. A plurality of self-checking features insure proper system operation and also preserve signals stored in a memory if there is a power failure.

REFERENCES:
patent: 3243583 (1966-03-01), Giot et al.
patent: 3749283 (1973-07-01), Nelson
patent: 3782597 (1974-01-01), Hansen et al.
patent: 3783248 (1974-01-01), Sugden, Jr.
patent: 3859638 (1975-01-01), Hume, Jr.
patent: 3894658 (1975-07-01), Buell, Jr.
patent: 3943500 (1976-03-01), Buchanan
patent: 3949207 (1976-04-01), Savary et al.
patent: 4107777 (1978-08-01), Pearson et al.
IBM Technical Disclosure Bulletin, "Power Out Warning Interrupt Circuit", De Mong, May 1976, vol. 18, No. 12, pp. 4147-4149.
Electronic Circuits Manual, Markus, ed., McGraw-Hill 1971, pp. 5 and 23.

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