Motion detectors and security devices incorporating same

Details Motion detectors and security devices incorporating same Motion detectors and security devices incorporating same

1988-03-08

1991-06-25

Eisenzopf, Reinhard J.

Communications: electrical

Condition responsive indicating system

Specific condition

340566, 200 6145R, G08B 1314

Patent

active

050271059

ABSTRACT:
A security device for the prevention of theft is described. It comprises an alarm, a motion detector which provides a signal, effective through an electrical circuit for actuation of the alarm. The motion detector includes a tubular cylinder, a sphere and a tether which are conductive and connected in series across an electrical potential. Movement of the detector, from any initial orientation and in any direction results in an increase in contact resistance between the sphere and cylinder and generates a motion signal. After actuation of an arming switch, a motion signal energizes the alarm. Once armed, a disarming switch must be actuated to prevent or halt energization of the alarm. The device is detachably mounted on a brief case, with the switches on the exterior and connected by conductors to the remaining elements of the device mounted on the interior of the brief case. Delay means enable the brief case to be moved after arming and before disarming, without sounding the alarm, to facilitate its storage and retrieval. In an alternate embodiment, a switch, mounted on a flexible conductor permits energization of the alarm independently of the motion signal responsive means.

REFERENCES:
patent: 4057791 (1977-11-01), Bimmerle et al.
patent: 4155079 (1979-05-01), Chiu et al.
patent: 4204202 (1980-05-01), Pai
patent: 4267553 (1981-05-01), Vogelsanger et al.
patent: 4272763 (1981-06-01), Chang et al.
patent: 4303906 (1981-12-01), Weakley
patent: 4418337 (1983-11-01), Bader
patent: 4467153 (1984-08-01), Jones et al.
patent: 4584569 (1986-04-01), Lopez et al.
patent: 4747216 (1988-05-01), Kelly et al.
patent: 4884067 (1989-11-01), Nordholm et al.

Affiliated with

Also associated with

Rating

Motion detectors and security devices incorporating same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Motion detectors and security devices incorporating same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motion detectors and security devices incorporating same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1043002