Timer for telephone toll calls and the like

Details Timer for telephone toll calls and the like Timer for telephone toll calls and the like

1973-09-28

1976-01-20

Pitts, Harold I.

Communications: electrical

Systems

Timer control

3403091, G08B 536

Patent

active

039342409

ABSTRACT:
A toll call time indicator comprises a small case or housing suitable for location adjacent a telephone and which has three readily visible different colored lights or other indicators for advising the user of the passage of time. A switch on the casing, when actuated, starts the timer and actuates the first signal, at the end of a predetermined period a second signal is actuated to indicate passage of a major portion of the full time interval and the third signal is actuated at or near the end of the period. The lights or indicators are arranged to be readily visible at a distance and are useful for supervisory purposes.

REFERENCES:
patent: 2906333 (1959-09-01), Ritzenthaler
patent: 3592118 (1971-07-01), Buechner
patent: 3686633 (1972-08-01), Carmody

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