Keyless rolling grille
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 1, 2004
Grant Date -
Jan 29, 2004
app pub date -
Jul 25, 2002
filing date -
Jul 25, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rolling grille having a set of horizontal bars, the bar set divided into a lower bar sub-set with a top bar and an upper bar sub-set with a bottom bar. The grille has a row of end plates on each side, the end plates joining the ends of the bars in both bar sub-sets together. Each end plate joins two adjacent bare together, each bar connected to two adjacent plates, the plates aligned when the grille closes an opening. Each end plate has a panel with an inner surface facing inwardly when the grille closes the opening. Bar mounting sections are provided at the top and bottom of each panel. At least one of the top and bottom bar mounting sections in the plates in the lower bar sub-set have a flange comber located to abut on the inner surface of the panel of an adjacent plate when the grille closes an opening. The flange member flange forms the lower bar sub-set into a relatively rigid assembly when an attempt is made to raise the lower sub-set. the grille has a locking linkage on each side joining the lower and upper sub-set of bars together, the locking linkage connected to the top bar in the lower sub-set and the bottom bar in the upper sub-set. The locking linkage has a lock link movable into a locking position when an attempt is made to raise the lower sub-set of bars.
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