Fence alarm system with swiveling posts

Details Fence alarm system with swiveling posts Fence alarm system with swiveling posts

1991-11-04

1995-08-01

Swarthout, Brent

Communications: electrical

Condition responsive indicating system

Specific condition

340550, 340666, G08B 1300

Patent

active

054383161

ABSTRACT:
A wire fence alarm system 10 comprises a plurality of zones in which a wire or set of wires is stretched between two anchor posts. A sensing post includes sensors for detecting deflection of one of the wires and a processor for generating alarms responsive to signals from the sensors. One or more of the anchor posts comprise rotating members attached to the wires. Use of the anchor post to climb the fence will result in an imbalance in the forces applied to the rotating members by the wires, thereby initiating an alarm condition.

REFERENCES:
patent: 3693940 (1972-09-01), Kendall et al.
patent: 4349989 (1982-09-01), Snider, Jr.
patent: 4695677 (1987-09-01), Ruth et al.
patent: 4768020 (1988-08-01), Chen
patent: 4815889 (1989-03-01), Duckett
patent: 4829286 (1989-05-01), Zvi
patent: 4923176 (1990-05-01), Heinz
patent: 5220308 (1993-06-01), Batzdorff et al.

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