Telephone dialer card

Details Telephone dialer card Telephone dialer card

1992-12-29

1994-12-27

Kuntz, Curtis

Telephonic communications

Supervisory or control line signaling

Substation originated

379356, 379357, H04M 100

Patent

active

053772636

ABSTRACT:
A credit card thin speed dialing apparatus has a battery, a tone generator with memory, and a crystal and a round transducer sandwiched by "O" rings. The outer surfaces of the apparatus have a selector slide and a push button on the top and an opening on the bottom below the transducer. The slide selects one number sequence. The apparatus is activated when the button is pushed, sending energy from the battery to the tone generator. The tone generator then sends the complete stored electrical signal to the transducer, vibrating the transducer for emitting dial tone frequencies from the vibrations of the transducer through the opening in the bottom of the frame of the apparatus. The card has a complex number memory storage capacity, which includes nine digits, two pauses and a PIN code which may be fourteen digits or more, with 35 elements or more in sequence. The start button and the transducer opening are on opposite sides, near the same end.

REFERENCES:
patent: 4126768 (1978-11-01), Grenzow
patent: 4130738 (1978-12-01), Sandstedt
patent: 4178487 (1979-12-01), Lake et al.
patent: 4442318 (1984-04-01), Desrochers
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patent: 4947424 (1990-08-01), Shaanan et al.
patent: 4984268 (1991-01-01), Brown et al.
patent: 4995077 (1991-02-01), Malinowski
patent: 5081674 (1992-01-01), Wijas et al.

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