Security windows

Details Security windows Security windows

1987-01-30

1988-02-16

Kannan, Philip C.

Movable or removable closures

With protective grille or safety guard

Facing interconnected movable louvers

49141, 160 92, E06B 368

Patent

active

047246340

ABSTRACT:
A window assembly controls ventilation and prevents passage through the window opening. Provides hardened steel horizontal bars spaced apart vertically a distance that prevents passage. The bars are welded to hardened steel frame members. The steel assembly is anchored in the wall by resistant anchoring elements. The bars may be secured in place by other means. Glazed aluminum vents have top rails that enclose the bars and pivot upon them. Aluminum frame members enclose the steel frame members and support operator means that rotate the vents on the bars to open and close the vents. The angle of opening may be limited to prevent the vent extending beyond the wall at walkways.

REFERENCES:
patent: 1986713 (1935-01-01), Clark
patent: 2509362 (1950-05-01), Miller
patent: 2616498 (1952-11-01), Wisner et al.
patent: 2955815 (1960-10-01), Muhr
patent: 3113355 (1963-12-01), Tracy et al.
patent: 3460289 (1969-08-01), Toth
patent: 4416084 (1983-11-01), Zen
patent: 4485589 (1984-12-01), Rodriguez-Torres

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