Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1993-05-20
1995-08-08
Swann, Glen
Communications: electrical
Condition responsive indicating system
Specific condition
200 6163, 232 35, 232 36, 232 37, 340539, G08B 2100
Patent
active
054402948
ABSTRACT:
A system for remotely sensing the delivery of mail to a mailbox uses a transmitter mounted on the mailbox. The transmitter generates a prescribed signal when the door of the mailbox is opened. The system also uses a receiver adapted for placement at a location remote from the transmitter. The receiver has two receiving circuits. The first receiver circuit generates a mail arrival output in response to receipt of the prescribed signal from the transmitter. The first receiver circuit maintains the generation of the mail arrival output regardless of continued receipt of the prescribed signal, until receipt of a prescribed termination command entered by the user. This way, the user knows when the mailbox door has been opened. The second receiver circuit generates a receiver locator output separate from the mail arrival output in response to receipt of the prescribed signal from the transmitter. Unlike the first receiver circuit, the second receiver circuit automatically terminates the receiver locator output in the absence of receipt of the prescribed signal after a predetermined time period. The temporal receiver locator output indicates when the receiver is placed in the remote location for good reception of the prescribed signal.
REFERENCES:
patent: 1021100 (1912-03-01), Hopkins
patent: 1037470 (1912-09-01), Grindle
patent: 1157949 (1915-10-01), Miller
patent: 1442578 (1923-01-01), Landrum
patent: 2477379 (1949-07-01), Korth
patent: 2480288 (1949-08-01), Donadio
patent: 2759057 (1956-08-01), Whildin et al.
patent: 2834539 (1958-05-01), Carey
patent: 3009139 (1961-11-01), Hill, Jr.
patent: 3040141 (1962-06-01), Whildin et al.
patent: 3556394 (1971-01-01), Caldes
patent: 3572581 (1971-03-01), McLeod
patent: 3611333 (1971-10-01), Conigliaro
patent: 3707260 (1972-12-01), Gelineau, Sr. et al.
patent: 4101877 (1978-07-01), Rush
patent: 4287514 (1981-09-01), Wartman et al.
patent: 4520350 (1985-05-01), Huang
patent: 4633236 (1986-12-01), Buhl
patent: 4792796 (1988-12-01), Bradshaw et al.
patent: 4794377 (1988-12-01), Benages
patent: 4868543 (1989-09-01), Binkley
patent: 4872210 (1989-10-01), Benages
patent: 5023595 (1991-06-01), Bennett
Mercier Carl E.
Mercier Ellen L.
LandOfFree
Mail delivery signal 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 Mail delivery signal system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mail delivery signal system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-974494