Patent ID: 8112938
Filing Date: 2012-02-14
Classification: E06B

Abstract:
1. A controlled gate system comprising a barrier arm pivotably connected to a first fixed support, motion sensing detection means secured to a second fixed support spaced at a predetermined distance from said first fixed support and in alignment therewith to create a restricted passageway with said barrier arm resting at an obstructing position within said passageway, a barrier arm arresting member for arresting said barrier arm at said obstructing position, gate control means to position said arresting means at an engaged or disengaged position to arrest or release said barrier arm from pivotal movement, a barrier arm stopper member to restrict a distance of displacement of said barrier arm from said obstructing position to a non-obstructing position to permit passage through said passageway in a single direction when said barrier arm arresting member is at said disengaged position, said barrier arm being secured to a vertical tubular support member axially rotatably supported by said first fixed support, said barrier arm stopper member comprising at least one abutment member secured about said vertical tubular support member, said abutment member having two spaced-apart abutment surfaces, one of said abutment surfaces being disposed for abutment with an associated stopper element to restrict the axially rotatable displacement of said vertical tubular support member and said barrier arm secured thereto from said obstructing position to said non-obstructing position, the other abutment surface being disposed for abutment with an arresting latch of said barrier arm arresting member, said stopper element being secured to a displaceable support, said gate control means controlling an actuator secured to said displaceable support for displacing said associated stopper element to a non-engageable position clear of said spaced-apart abutment surfaces of said abutment member to permit free axial rotation of said vertical tubular support member in opposed directions from said obstructing position with said displaceable barrier arm arresting member positioned at said disengaged position by said gate control means.