Security grill for window opening

Details Security grill for window opening Security grill for window opening

1987-09-14

1989-06-06

Kannan, Philip C.

Movable or removable closures

With protective grille or safety guard

Removable

E06B 368

Patent

active

048359068

ABSTRACT:
A security grill structure for preventing entrance through a wall opening. The grill structure comprises a metal peripheral retention frame securable in the wall opening. The frame has opposed parallel channel members interconnected by opposed transverse bars. A lock is provided in one of the channel members and is operable from an inside face of the retention frame. A grill engaging element is secured to each of the transverse bars. A removably engageable metal grill is receivable in an opening defined by the peripheral retention frame and is engageable by the lock, the other channel member and the grill engaging element.

REFERENCES:
patent: 4283881 (1981-08-01), Moore et al.
patent: 4478002 (1984-10-01), English
patent: 4575965 (1986-03-01), Iversen
patent: 4653226 (1987-03-01), Woodrow

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