Expandable security grille or barrier

Details Expandable security grille or barrier Expandable security grille or barrier

1994-03-16

1996-07-16

Purol, David M.

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Parallelogram type

E06B 392

Patent

active

055358039

ABSTRACT:
A security grille is provided of the type in which a series of tubular uprights are interconnected by transverse link members so as to provide an expandable and contractible grille. The tubular uprights have slots for guiding and locating transverse studs at the free ends of the link members. The slots are defined by inserts which are plastic mouldings fitted into apertures cut in the wall of the tubular uprights. The fittings have closed inner ends and form a total closure to the aperture to prevent the ingress of dirt and moisture. The inserts also have peripheral flanges of a substantially convex outer shape to prevent fouling thereof by the link members.

REFERENCES:
patent: 583235 (1897-05-01), McCormick
patent: 1877829 (1932-09-01), Erlinder
patent: 4006768 (1977-02-01), Horgan
patent: 4816310 (1989-03-01), Truyens

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