Patent ID: 7617974
Filing Date: 2009-11-17
Classification: E06B,G07C

Abstract:
1. An automatic gate for permitting or preventing access by a person to a space or a transport vehicle, comprising: at least one vertical and elongated frame; at least one flap which is mobile between a closed position in which said at least one flap forms a barrier preventing passage of a person along the frame, and an open position in which the at least one flap allows the passage of a person along the frame; elements for reading an access ticket; elements for controlling the displacement of the at least one flap between the two abovementioned positions; a lateral face of the frame adjacent to the passage of the person comprising at least two superposed rows of detection cells cooperating with elements for preventing the opening of the flap or for maintaining the flap closed when said detection cells detect an abnormal situation, one of the at least two superposed rows, called high or upper row, includes a plurality of said detection cells extending to upstream and downstream sides of the at least one flap above a line situated at the mid-height of the frame, and the other row called middle row, being situated close to said line, wherein the detection cells in at least one of the upper and middle rows, situated downstream of the flap are configured for detecting a change of direction of a person or of a child that has passed the flap and for controlling the closing of the flap in order to prevent the person from turning back.