Time metering device particularly useful as a parking card

Details Time metering device particularly useful as a parking card Time metering device particularly useful as a parking card

1985-08-21

1988-01-05

Trafton, David L.

Registers

Systems controlled by data bearing records

Time analysis

235380, 235384, 235492, 364467, 368 90, G06K 1500

Patent

active

047178159

ABSTRACT:
A time metering device particularly useful as a parking card comprises a time storage device for storing data representing total pre-purchased time; a time measuring device; time selector keys for manually selecting a predetermined time interval; a predetermined interval storage device; and an "off" key. The time metering device further includes an electrical circuit which decrements both the pre-purchased time storage device and the predetermined interval storage device according to the time measured by the time measuring device until the "off" key is operated, and a display which displays the remaining time in the pre-purchased and predetermined-interval storage devices.

REFERENCES:
patent: 4310890 (1982-01-01), Trehn et al.
patent: 4460965 (1984-07-01), Trehn et al.
patent: 4498000 (1985-02-01), Decavele et al.
patent: 4544834 (1985-10-01), Newport et al.
patent: 4575621 (1986-03-01), Dreifus
Horological Journal, vol. 125, No. 7, Jan. 1983, p. 23, Ashford, Kent, GB; "Multi-Purpose Count-Down Timer".

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