Remote mail indicator system

Details Remote mail indicator system Remote mail indicator system

1991-05-22

1991-10-29

Smith, Gary L.

Deposit and collection receptacles

Letter boxes

Indicators

250214AL, B65D 9100

Patent

active

050608541

ABSTRACT:
A remote indicator system for determining at a remote location when incoming mail is present in a mailbox. A light port in the mailbox admits outside ambient light onto a first photodetector on the bottom of the mailbox. When no mail is present, the first photodetector produces a first signal indicating that no mail is present. When incoming mail is present, the light to the first photodetector is interrupted, causing the first photodetector to produce a second signal, indicating that mail is present. A second photodetector positioned outside of the mailbox disables the first signal when the outside ambient light is below a given intensity, and a switching means associated with the manually operable flag disables the first signal to distinguish between incoming and outgoing mail.

REFERENCES:
patent: 2968804 (1961-01-01), Buffington
patent: 3909819 (1975-09-01), Radford
patent: 4268823 (1981-05-01), Rauchut et al.
patent: 4314102 (1982-02-01), Lowe et al.
patent: 4520350 (1985-05-01), Huang
patent: 4633236 (1986-12-01), Buhl
patent: 4659919 (1987-04-01), Price
patent: 4794377 (1988-12-01), Benages
patent: 4833368 (1989-05-01), Lin
patent: 4872210 (1989-10-01), Benages
patent: 4982176 (1991-01-01), Schwarz

Affiliated with

Also associated with

Rating

Remote mail indicator system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Remote mail indicator system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Remote mail indicator system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1394245