Patent ID: 8646510
Filing Date: 2014-02-11
Classification: A62C,E05F,E05Y,E06B

Abstract:
1. A barrier system, comprising: a barrier having a first end and a second end, the barrier being movable between a deployed position and a retracted position; a spool coupled to the first end of the barrier, the barrier being positioned to be wound onto and off of the spool as the barrier moves between the deployed and the retracted positions; a drive assembly comprising a drive motor operatively connected to the spool and a drive member connected to the drive motor and to the second end of the barrier, the drive motor operatively moves the drive member relative to at least a portion of the barrier and the drive member moves the second end of the barrier toward the spool as the barrier moves toward the retracted position and away from the spool as the barrier moves toward the deployed position; a control system coupled to the drive assembly and configured to command operation of the drive assembly; a sensor operably coupled to the control system and positioned remote from the drive motor and adjacent to a portion of the drive member, the sensor senses movement of the drive member remote from the drive motor as the barrier moves between the deployed and the retracted positions, wherein the movement of the drive assembly remote from the drive motor is correlated with a position of the barrier intermediate the deployed and retracted positions; and wherein the control system is configured to receive information from the sensor related to movement of the drive assembly between the deployed and retracted positions and to determine a direction of movement of the barrier between the deployed and retracted positions, and the control system correlates the information from the sensor with an actual position of the barrier intermediate the deployed and retracted positions.