(57) In order to avoid, automatically, that the rolling gate (1) bumps into someone or
something while they pass through the gate opening and to realise said rolling gate
(1) in such a way that it has a simple, reliable and inexpensive structure, photoelectric
cells (14, 15), which detect the presence of someone or something passing through
the gate, are positioned at the ends of the folding arms (6) and they are positioned
at a distance, from the lower edge (9) of the rolling gate (1), which is defined in
function of the closing speed of the gate (1).
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