Registers – Systems controlled by data bearing records – Credit or identification card systems
Patent
1984-04-09
1986-05-06
Pitts, Harold I.
Registers
Systems controlled by data bearing records
Credit or identification card systems
2353825, 235451, 235381, G06K 500
Patent
active
045874107
ABSTRACT:
The apparatus includes a card which entitles the holder to a number of units of parking time represented by discrete capacitances carried by the card. The parking time is metered by a card reader which accepts the card senses the capacitance carried thereby and measures out a unit of parking time for each unused capacitance. The reader responds to a predetermined capacitance and renders inoperative each capacitance as it is used up. The elements of each capacitance are formed so that the value of the capacitance can be greatly reduced by a mechanical or other type of punching operation. Two types of reader are disclosed, one which accepts the card in increments corresponding to a single capacitance and the other which accepts the entire card and automatically scans the capacitances carried thereby. Several forms of cards are disclosed.
REFERENCES:
patent: 3585368 (1971-06-01), Nunamaker
patent: 4017834 (1977-04-01), Cuttill et al.
patent: 4020325 (1977-04-01), Pfost et al.
patent: 4328415 (1982-05-01), Eaton
patent: 4331863 (1982-05-01), Sidline et al.
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