Described is a pallet including a base having a length extending between a first end and a second end opposite the first end and a width transverse to the length; and a cage removably coupled to the base.

A collapsible gate may provide a temporary barrier to prevent movement between rooms, or to prevent access to a staircase, in a home or commercial building. A pre-framed collapsible gate may be secured to and supported by a framing system for installation within a wall, wherein the collapsible gate is adapted for storage within the framing system when not in use. The pre-framed collapsible gate may be vertically retractable and adapted to stow within a framing system installed within a wall and out of sight. The collapsible gate may include a counterbalance to maintain the gate within the framing system when the gate is in the fully open position, and to assist in opening the gate when the gate is lifted from a closed position.

Various embodiments include bullet-resistant multilayered curtain that can be quickly deployed to secure an entranceway from attackers and deter them from entering. A bullet-resistant multilayered curtain may be contained above an entranceway in a casing and supported by a quick release pin when in the stored configuration. The bullet-resistant curtain includes multiple horizontal bars that are distributed along the length of the bullet-resistant curtain. Firmly fixed on the perimeter of the entranceway are horizontal bar retainer clamps for locking the horizontal bars into place when the bullet-resistant curtain is in its deployed state. A vibration sensor control switch may be fixed on the perimeter of the entranceway and configured to activate vibration sensors fixed on the bullet-resistant curtain to detect vibrations and send notifications to remote authorities.

Described is a pallet including a base having a length extending between a first end and a second end opposite the first end and a width transverse to the length; and a cage removably coupled to the base.

An automatic auto-sensing flood protection roller shutter with auto-locating reinforced column includes a door plate composed of a plurality of door panels, at least one reinforced column automatically movable by a motor to a reinforcing position behind the door plate when the door plate is lowered upon sensing a flood, and a bolt and bolt driving device for securing the at least one reinforced column in the reinforcing position.

Various embodiments include bullet-resistant multilayered curtain that can be quickly deployed to secure an entranceway from attackers and deter them from entering. A bullet-resistant multilayered curtain may be contained above an entranceway in a casing and supported by a quick release pin when in the stored configuration. The bullet-resistant curtain includes multiple horizontal bars that are distributed along the length of the bullet-resistant curtain. Firmly fixed on the perimeter of the entranceway are horizontal bar retainers for locking the horizontal bars into place when the bullet-resistant curtain is in its deployed state. A vibration sensor control switch may be fixed on the perimeter of the entranceway and configured to activate vibration sensors fixed on the bullet-resistant curtain to detect vibrations and send notifications to remote authorities.

A nut stacking mechanism (-1-) for the displacement of slats between a stacking zone (L2) and a sliding zone (L1), comprising a spindle (2), on which a nut (3) is displaceable between the stacking zone (L2) and the sliding zone (L1), a rotation stop element (4), to form in the sliding zone (L1), in the rotational direction of the spindle (2), an obstacle for the movement of the nut (3), and a stacking element (5), to form in the stacking zone (L2), in the longitudinal direction of the spindle (2), an obstacle for the movement of the nut (3), wherein, by displacement of at least a part of the rotation stop element (4) and the stacking element (5), the boundary between the stacking zone (L2) and the sliding zone (L1) is provided displaceably in the longitudinal direction of the spindle (2).

Described is a pallet including a base having a length extending between a first end and a second end opposite the first end and a width transverse to the length; and a cage removably coupled to the base.