Method and device for automatic systems designed to operate movable barriers
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United States of America Patent
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May 15, 2012
Grant Date -
Jan 24, 2008
app pub date -
Nov 3, 2005
filing date -
Nov 10, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Method, together with the devices implementing said method, for controlling the closing and opening movements of a movable barrier (103) so as to prevent a dangerous impact with an obstacle or crushing thereof, said movable barrier (103) comprising a closing edge having, positioned thereon, one or more sensors (108) connected to a first transceiver (27b) able to exchange a signal with a second fixed transceiver (27a) in communication with a control unit which manages the movement of the barrier (103), comprising a step defining for said signal a communications protocol consisting of more than two signal configurations (A, B, C, D).
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