Mailbox signalling system which is visible at night and in dayli

Details Mailbox signalling system which is visible at night and in dayli Mailbox signalling system which is visible at night and in dayli

1989-09-26

1990-10-23

Gibson, Jr., Robert W.

Deposit and collection receptacles

Letter boxes

Signals

B65D 9100

Patent

active

049645650

ABSTRACT:
A signalling system is used in conjunction with a mailbox, a newpaper tube or the like to signal the arrival of mail, a newpaper or the like. The system is highly visible in bright sunlight and is also visible at night and includes a ball that is held in an upper location adjacent to the mailbox and is released as soon as the door is opened to drop downwardly. Two serially connected switches couple a light bulb to a power source, with one of the switches being manually operated and the other switch being operated when the ball drops into its lower position.

REFERENCES:
patent: D260319 (1981-08-01), Kuntz
patent: D278469 (1985-04-01), Ross
patent: 2815167 (1957-12-01), Bailey et al.
patent: 3498255 (1970-03-01), Haeberle
patent: 3572581 (1971-03-01), McLeod
patent: 3958752 (1976-05-01), Pieszchala
patent: 4066209 (1978-01-01), Brake
patent: 4492335 (1985-06-01), Davis
patent: 4860949 (1989-08-01), Moore

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