Rolling shutter egress system

An egress system for a motorized rolling shutter, comprising:

• a rotatable hollow cylinder having an interior space;
• a planetary gear system positioned in the cylinder interior space, comprising:
• a rotatable sun gear;
• a rotatable planet gear in meshing engagement with the sun gear;
• a rotatable carrier, the planet gear rotatably coupled to the carrier;
• and
• a ring gear rotationally coupled to the cylinder, the planet gear in meshing engagement with the ring gear and positioned between the ring gear and sun gear;
• a motor positioned in the cylinder interior space and coupled to the carrier, the motor having an on state that drives the rotation of the carrier, and an off state that arrests the rotation of the carrier;
• a detent brake coupled to the sun gear, comprising:
• a locking arm with a lock pin;
• and
• a detent wheel rotationally coupled to the sun gear, the detent wheel having a notch that is sized and shaped to receive the lock pin;
• wherein the detent brake is moveable between an actuated position with the lock pin received in the detent wheel notch to arrest the rotation of the detent wheel and coupled sun gear, and a released position with the lock pin removed from the detent wheel notch to permit rotation of the detent wheel and coupled sun gear;
• and
• a torsion spring coupled to and exerting a rotational force on the cylinder;
• wherein the brake in the released position permits the rotation of the planet gear on the arrested carrier, which permits rotation of the ring gear and coupled cylinder with the motor in the off state.

An egress system for a motorized rolling shutter, comprising:

• a rotatable hollow cylinder having an interior space;
• an articulated curtain coupled to the cylinder, the curtain moveable between a raised position wound about the cylinder, and a lowered position unwound from the cylinder;
• a planetary gear system positioned in the cylinder interior space, comprising:
• a rotatable sun gear;
• a rotatable planet gear in meshing engagement with the sun gear;
• a rotatable carrier, the planet gear rotatably coupled to the carrier;
• and
• a ring gear rotationally coupled to the cylinder, the planet gear in meshing engagement with the ring gear and positioned between the ring gear and sun gear;
• a motor coupled to the carrier, the motor having an on state which drives the rotation of the carrier and the movement of the curtain, and an off state that arrests the rotation of the carrier and the movement of the curtain;
• and
• a brake coupled to the sun gear, the brake having an actuated position that arrests rotation of the sun gear, and a released position that permits rotation of the sun gear;
• wherein the brake in the released position permits rotation of the planet gear on the arrested carrier, which allows rotation of the ring gear and the coupled cylinder, and allows the movement of the curtain with the motor in the off state.