Do not disturb doorbell

Details Do not disturb doorbell Do not disturb doorbell

1974-05-28

1976-06-15

Caldwell, John W.

Communications: electrical

Systems

In and out indicators

340326, G08B 300

Patent

active

039640582

ABSTRACT:
A doorbell system for a residence comprising a first push button switch for actuating a bell when the resident is expecting callers. When the resident is not expecting callers, a light illuminates a message to inform the caller that the resident does not wish to be disturbed unless there is an emergency. In this event, the caller is to push a second push button switch located near the message for actuating the bell. A control switch controls actuation of the two push button switches and the light.

REFERENCES:
patent: 1606404 (1926-11-01), Eastman
patent: 3017623 (1962-01-01), Bishofberger

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