Apparatus for conditioning automatic coin validation signals, an

Details Apparatus for conditioning automatic coin validation signals, an Apparatus for conditioning automatic coin validation signals, an

1998-04-01

2000-06-06

Loomis, Paul

Telephonic communications

With check operated control

379145, 379146, 379150, H04M 1700

Patent

active

060728639

ABSTRACT:
An external plug-in module is inserted, or field retrofitted, between a validator and a phone chassis and incorporates circuitry to condition the coin signals generated by the validator. This signal conditioning eliminates the possibility of the chassis being improperly triggered and generating false coin tone signals during periods of interrupted power.

REFERENCES:
patent: 4674114 (1987-06-01), Crouch et al.
patent: 4989239 (1991-01-01), McGarry
patent: 5084613 (1992-01-01), Grantland
patent: 5150403 (1992-09-01), Jordan
patent: 5168518 (1992-12-01), Criscenzo et al.
patent: 5907606 (1999-05-01), Ingalsbe et al.

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