Title: Telephone paystation

Abstract: A high security full prepay telephone paystation utilizes a low current escrow unit and a coin counter for determining the amount of money deposited in the escrow. Also, circuitry is provided for sensing whether any money at all has been deposited in the escrow. If no money has been deposited, the circuit permits dial and voice signals to pass to permit "0," "1" and certain emergency numbers, such as "911" to be passed to central offices designed to accept such numbers without the need for depositing a coin. If money is deposited, but that money is insufficient as determined by the coin counter, the dial and voice circuitry is inhibited. In addition, an improved coin box and paystation locking mechanism further improves the security of the station.

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Inventors: Clark, Jr., Robert A. (Ft. Lauderdale, FL, US)

Application Number: 833511
Filing Date: 1977-09-15
Publication_date: 1979-01-23
Assignee: Communication Equipment and Engineering Co. (Melrose Park, IL)
Primary Class(es): 379/146 379/155
Other Classes:
US Patent Ref:

2921980	Jan, 1960	Lomax	179/6.
3317674	May, 1967	Nawman	179/6.
3393273	Jul, 1968	Bustos	179/6.
3760101	Sep, 1973	Burns	179/6.
3842210	Oct, 1974	Dawson	179/6.
3868483	Feb, 1975	Trimmer et al.	179/6.
3881062	Apr, 1975	Beeman et al.	179/6.
4063036	Dec, 1977	Hunsicker	179/6.

Other Refs:
Primary Examiner: Claffy, Kathleen H.
Assistant Examiner: Brigance, Gerald L.
Attorney: Mason, Kolemainen, Rathburn & Wyss