Card and card reader apparatus therefor

Details Card and card reader apparatus therefor Card and card reader apparatus therefor

1975-08-27

1977-06-14

Kilgore, Robert M.

Registers

Calculators

Input-output calculator to indicator, printer, etc.

235 6111H, 235 6111D, 235 617B, 340149A, G06K 708, G06K 1906

Patent

active

040299457

ABSTRACT:
A card comprises a plurality of code storing mediums arranged between two opaque, non-magnetic sheets and each having a constricting portion. The code storing mediums are looped and open-loop metallic pieces of conductive material. Such a card is inserted into a card reader apparatus which is permitted to read the stored information by detecting a presence of oscillation involved with a change of coupling degree of coils in a detecting body generated according to a difference between shapes of the code storing mediums.

REFERENCES:
patent: 2774060 (1956-12-01), Thompson
patent: 3245054 (1966-04-01), Bryon
patent: 3378920 (1968-04-01), Cone
patent: 3387265 (1968-06-01), Smeiman
patent: 3564214 (1971-02-01), Cooper
patent: 3719804 (1973-03-01), Illing
patent: 3728523 (1973-04-01), Torok
patent: 3793600 (1974-02-01), Grosbard
patent: 3906201 (1975-09-01), Housman

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