Mail delivery alarm system

Details Mail delivery alarm system Mail delivery alarm system

1976-06-11

1978-07-18

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

235 37, G08B 2100

Patent

active

041018770

ABSTRACT:
A system for activating a light and music box in the home when mail is deposited in a mail box located outside the home, and for deactivating the light and music box when the mail is removed. Switch means is provided inside the mail box and a circuit is arranged to activate the signal devices every other time the switch means is closed. Additionally, a signal light is provided on the mail box to enable a visitor to find the proper home at night, and an electrically operated lock is provided for the mail box to prevent the mail from being stolen.

REFERENCES:
patent: 2463957 (1949-03-01), Faulkenbury et al.
patent: 2535607 (1950-12-01), Smith
patent: 3744022 (1973-07-01), Olsen
patent: 3935994 (1976-02-01), Darvishian
Ryan, Ray, Basic Digital Electronics, Tab Books, Blue Ridge Summit, Pa., 1975, pp. 90-91.

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