Patent ID: 8453382

Claim:
A gate system comprising: a pair of sides forming a pathway; at least one moveable gate configured to block the pathway; a motion limiting system allows the gate to operate in a forward motion mode in which the gate yields to allow forward motion of a first person moving through the pathway in a forward direction from an ingress area to the pathway to an egress area of the pathway, a motion sensor coupled to the motion limiting system, the motion sensor mounted between the ingress area and the gate and directed to detect motion of a second person in a direction opposite the forward direction and toward the gate, and to detect a presence of the first person between the ingress area and the gate, the motion sensor configured to output a signal to the motion limiting system indicative of the motion of the second person in the direction opposite the forward direction and toward the gate; and the motion limiting system locks the gate against the forward motion of the first person in the forward direction and against the motion of the second person in the direction opposite the forward direction and toward the gate when the signal from the motion sensor indicating the motion of the second person in the direction opposite the forward direction and toward the gate is received by the motion limiting system, and the gate is being operated in the forward motion mode.