Mailbox signalling device

Details Mailbox signalling device Mailbox signalling device

1977-07-05

1979-07-31

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

G08B 2100

Patent

active

041632257

ABSTRACT:
A device for signalling when a remote receptacle such as a rural mailbox has been opened. The device includes a switch that is closed by the opening of the box, a relay actuated thereby, a hold-in circuit established by the relay, a signalling means such as a buzzer or a light or both that is energized when the relay is actuated and a reset switch in the hold-in circuit for disabling the relay and the signalling means.

REFERENCES:
patent: 3261010 (1966-07-01), Kardel
patent: 3935994 (1976-02-01), Darvishian

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