Security screen

Details Security screen Security screen

1980-04-03

1981-06-02

Perham, Alfred C.

Static structures (e.g., buildings)

Elongated rigid structure

Baluster type

52817, B23P 1512, E04C 238

Patent

active

042703336

ABSTRACT:
A security screen formed from an elongate strip of formable material and an interlacing of wire rods is disclosed. The side edges of an elongate strip are initially notched and slotted in one edge; thereafter the strip is deformed along four parallel lines which become the interior corners of frame members having a substantially rectangular cross section. A pair of complementary corner notches, each formed of a particular shape, allow the strip to be folded or deformed transversely of its length dimension, thereby forming a pair of intersecting frame members, each having a substantially rectangular cross section defined by a front wall, parallel inside and outside side walls and a pair of flanges. The inside flange and side wall of each frame member provide a plurality of slotted openings spaced equal distances apart to receive the ends of steel rods which are interlaced and form a wire meshed screen.

REFERENCES:
patent: 1540788 (1925-06-01), McClure
patent: 1772156 (1930-08-01), Meadows
patent: 1810748 (1931-06-01), Berger
patent: 2006755 (1935-07-01), Whitlock
patent: 2111448 (1938-03-01), Hoffman
patent: 2139423 (1938-12-01), Scheeler
patent: 3554383 (1971-01-01), Ball

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