Communications: electrical – Selective – Having indication or alarm
Patent
1980-05-09
1982-04-27
Caldwell, Sr., John W.
Communications: electrical
Selective
Having indication or alarm
180287, 307 10AT, 340543, 361172, 235382, B60R 2504, B60R 2510
Patent
active
043273530
ABSTRACT:
An electronic system is provided for use with motor vehicles, homes, offices, factories, or other applications where it is desired to control access and/or operation. The security system utilizes a coded electronic key, preferably in the form of a card, which is connected to a decoder for identification by composing the key code with a stored code. If the electronic key is properly matched to the decoder, the system is allowed to function without tripping alarms. The system includes monitoring devices, supervising cabling and various access points, such as doors, hoods, etc., which, if breached without the proper card in place, will trip an alarm. The system is deactivated with the proper key and the system includes appropriate delays to allow proper parties to move in and out of the secured vehicle, room, etc.
REFERENCES:
patent: Re27013 (1970-12-01), Hedin et al.
patent: 3392558 (1968-07-01), Hedin et al.
patent: 3631301 (1971-12-01), Goldman
patent: 3639906 (1972-02-01), Tritsch
patent: 3649961 (1972-03-01), Draper
patent: 3649962 (1972-03-01), Bedard et al.
patent: 3673569 (1972-06-01), Hedin et al.
patent: 3714628 (1973-01-01), Sloger
patent: 3717866 (1973-02-01), Ehrlich
patent: 3757301 (1973-09-01), Regan et al.
patent: 3781804 (1973-12-01), Lederer, Jr.
patent: 3851314 (1974-11-01), Hedin
patent: 3876884 (1975-04-01), Housman et al.
Beard George W.
Mulvaney James M.
Beard George W.
Caldwell Sr. John W.
Hieken Charles
Nowicki Joseph E.
LandOfFree
Security 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 Security system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Security system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2200129