Curbside mailbox signal

Details Curbside mailbox signal Curbside mailbox signal

1988-03-25

1989-10-03

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

340545, 200 6163, G08B 1308

Patent

active

048722103

ABSTRACT:
A signal device is mounted on the inside of the door of a curbside mailbox. Opening and then closing the door closes a switch (mechanical switch, gravity actuated, a mercury switch or a photo diode) to emit a radio signal. A receiver in the residence, when actuated by the radio signal, notifies the occupant by an audible and/or visual signal.

REFERENCES:
patent: 3611333 (1971-10-01), Conigliaro
patent: 3909819 (1975-09-01), Radford
patent: 4282518 (1981-08-01), Bonner
patent: 4520350 (1985-05-01), Huang
patent: 4651135 (1987-03-01), Duhaime et al.

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