Patent ID: 7883123
Filing Date: 2011-02-08
Classification: E05B,Y10S,Y10T

Abstract:
1. An electronic push retraction exit device for latching and unlatching a door, the exit device comprising: a support rail mountable to the door; a pair of rocker levers mounted on the support rail; a push rail mounted on the pair of rocker levers and movable between an outward position and an inward position, the push rail being biased towards the outward position and movable to the inward position by manually pushing on an exterior surface of the push rail to manually unlatch and open the door; a latch bolt operably connected to the push rail and movable between a latched position and an unlatched position, the push rail being connected to move the latch bolt to the unlatched position when the push rail is moved to the inward position; a linear actuator operable in a driving state and a holding state, and an off state; the linear actuator including: a control circuit electrically connected to the stepping motor and operable to control the stepping motor in the driving state, the holding state, and the off state wherein: