Patent ID: 8261489

Claim:
Security gate for cyclical release of a passageway, having a movable carrier element ( 14 ), whose movement is transferred to an array of blocking elements ( 52 , 62 ), which are movable by means of a movement of the carrier element ( 14 ) within guide elements ( 54 , 64 ) that delimit the passageway, whereby the carrier element ( 14 ) has one or more first and second active surfaces ( 18 , 20 ), in each instance, which point in opposite directions, and having a locking device for blocking the movement of the carrier element ( 14 ), which device has two latches ( 22 , 24 ) that are movable between a locking position and a release position, whereby a first one of the latches ( 22 ) lies against the first active surface ( 18 ) or one of the first active surfaces ( 18 ) in its locking position, and the second latch ( 24 ) lies against the second active surface ( 20 ) or one of the second active surfaces ( 20 ) in its locking position, wherein a control element ( 32 ) that is movable relative to the carrier element ( 14 ) and has one or more first and second control surfaces ( 36 , 38 ) is disposed on the carrier element ( 14 ), which control surfaces are movable between a first and a second safety position by moving the control element ( 32 ) relative to the carrier element ( 14 ), whereby in the first safety position, the first control surface ( 36 ) or one of the first control surfaces ( 36 ) is disposed relative to the first active surface ( 18 ) or to one of the first active surfaces ( 18 ) in such a manner that the first latch ( 22 ) lies against the first control surface ( 36 ) in its locking position, while the second control surface ( 38 ) or one of the second control surfaces ( 38 ) projects over the second active surface ( 20 ) or one of the second active surfaces ( 20 ), thereby preventing movement of the second latch ( 24 ) into its locking position, and whereby in the second safety position, the second control surface ( 38 ) or one of the second control surfaces ( 38 ) is disposed relative to the second active surface ( 20 ) or to one of the second active surfaces ( 20 ) in such a manner that the second latch ( 24 ) lies against the second control surface ( 38 ) in its locking position, while the first control surface ( 36 ) or one of the first control surfaces ( 36 ) projects over the first active surface ( 18 ) or one of the first active surfaces ( 18 ), thereby preventing movement of the first latch ( 22 ) into its locking position.