Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1994-11-23
1996-09-03
Swann, Glen
Communications: electrical
Condition responsive indicating system
Specific condition
340539, 340568, G08B 1322, G08B 2100
Patent
active
055527736
ABSTRACT:
An alarm signal is triggered in the event of a prohibited approach or removal of people or objects which affords reliable and unobtrusive protection of such people or objects while retaining unhindered mobility. A signal is transmitted by a transmitter 14 which causes the blockage of an alarm signal until the distance between the transmitter 14 and the receiver 2 is greater or smaller than a predetermined value or the transmission between the transmitter 14 and the receiver 2 is interrupted. It is also possible to gain a representative distance signal corresponding to the distance between the two security elements which causes a corresponding change of pitch or volume of the alarm signal.
REFERENCES:
patent: 4675656 (1987-06-01), Narcisse
patent: 4871997 (1989-10-01), Adriaenssens
patent: 5053768 (1991-10-01), Dix, Jr.
patent: 5126719 (1992-06-01), De Sorbo
LandOfFree
Method and apparatus for the protection of people or objects does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for the protection of people or objects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for the protection of people or objects will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1953497