Patent ID: 8887791

Claim:
A stored energy emergency barrier release device, comprising: a barrier; a barrel member for storing the barrier thereon, the barrel member rotatable on a stationary counterbalance shaft and a rotatable push down shaft; a push down spring coupled to the push down shaft for storing potential energy to exert a moving force on the barrier; and a reset mechanism disposed on the push down shaft, the reset mechanism positionable between an engaged position and a released position, the reset mechanism comprising: a clutch assembly; a drive wheel coaxially aligned with a first side of the clutch assembly, the drive wheel interfaced with a drive mechanism to move the barrier between a first position and a second position when a release device is in the engaged position; and a tension wheel coaxially aligned with a second side of the clutch assembly, the tension wheel operable to resist the rotation of the push down shaft when the release device is positioned in the engaged position, and to permit rotation of the push down shaft when the release device is positioned in the released position to enable the push down spring to release the potential energy and move the barrier to the first position; and wherein moving the barrier from the first position to the second position tensions the push down spring and stores energy in the push down spring.