Intruder barrier

Details Intruder barrier Intruder barrier

1979-01-24

1982-09-07

Kundrat, Andrew V.

Fences

Driftage control

256 16, E04H 1700

Patent

active

043480128

ABSTRACT:
An intruder barrier for mounting on the top or side face of a wall is provided. The intruder barrier consists essentially of a scaling barrier formed from a number of blades radially arranged and rotatable about a longitudinal axis so that any attempt to climb the wall is foiled as the blades simply rotate thus not providing a firm hold for the would-be intruder.

REFERENCES:
patent: 259654 (1882-06-01), Worthington
patent: 321171 (1885-06-01), Archibald
patent: 399617 (1889-03-01), Ihnen
patent: 435708 (1890-09-01), Poole
patent: 504936 (1893-09-01), Niles
patent: 511700 (1893-12-01), Jacobs
patent: 511701 (1893-12-01), Jacobs
patent: 585548 (1897-06-01), Allen
patent: 772364 (1904-10-01), Mallia

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