The present disclosure relates to a barrier system for shielding humans from harmful exposure to fire, smoke, noxious fumes, or contaminated air. Some embodiments provide a deployable barrier system that has a barrier retract assist system configured to assist a user in manually moving the barrier from the deployed position toward the retracted position with at least a portion of the barrier being rolled onto the barrel portion for egress past the barrier. The retract assist system can be positioned inside of the barrel portion.

A fire shutter control system and a fire shutter control method capable of effectively controlling a fire shutter in the event of a fire in a building are provided. The fire shutter control system may include a fire detector configured to detect a fire outbreak and generate a fire signal in the event of a fire; a fire shutter controller configured to apply a control signal to a fire shutter to enable a drive motor for operating the fire shutter to operate when the fire signal is generated by the fire detector; and a power supply unit configured to supply power to the fire detector, the fire shutter controller, and the drive motor for operating the fire shutter.

A fire shutter control system and a fire shutter control method capable of effectively controlling a fire shutter in the event of a fire in a building are provided. The fire shutter control system may include a fire detector configured to detect a fire outbreak and generate a fire signal in the event of a fire; a fire shutter controller configured to apply a control signal to a fire shutter to enable a drive motor for operating the fire shutter to operate when the fire signal is generated by the fire detector; and a power supply unit configured to supply power to the fire detector, the fire shutter controller, and the drive motor for operating the fire shutter.

The application relates to a cover apparatus for a machine, in particular for a machine tool, comprising a cover formed by at least one cover element. The cover comprises a drive motor that is configured and adapted to move the cover from a closed position into an open position. In addition, at least one electrical component is provided that is arranged at the cover. To connect the electrical component indirectly or directly to a control device or to a power source, a connection cable is provided that extends in a receiver that extends in parallel with the guide rail in at least one guide element or in the at least one cover element.

The application relates to a cover apparatus for a machine, in particular for a machine tool, comprising a cover formed by at least one cover element. The cover comprises a drive motor that is configured and adapted to move the cover from a closed position into an open position. In addition, at least one electrical component is provided that is arranged at the cover. To connect the electrical component indirectly or directly to a control device or to a power source, a connection cable is provided that extends in a receiver that extends in parallel with the guide rail in at least one guide element or in the at least one cover element.

A slat system having a slat hanging with slats and a shifting apparatus for shifting the slats. The slats are intercoupled and movable from a closed position, in which broad faces of the slats are substantially flush in a plane and narrow faces of adjacent slats face one another, into an open position, in which the broad faces of the slats are parallel to one another but not parallel to an opening and closing direction, using the shifting apparatus to shift the slats in the opening and closing direction. The shifting apparatus has a pulling means coupled at one end to the slat hanging. The slat system has a first sheave mounted so as to be rotatable about an axis in two directions, to which sheave the other end of the pulling means is fastened, and a locking means to block the sheave from rotating in the open position.

The invention relates to an enclosure for refrigerating chambers, suitable for closing an access (3) to a refrigerating chamber and comprising: —a sliding refrigerating door (1), and —a quick-opening door (2), both assembled on the same side of the chamber, comprising a frame with vertical posts (4), comprising: —on an outer face, at least one mouth (42) wherein a fan (6) is coupled which introduces air in the corresponding vertical post (4); —on the inside thereof, a deflector plate (61) which directs the air towards electrical resistors (7) for heating the air, situated underneath the deflector plate and, —on an inner face, an outlet (43) for supplying hot air on one of the surfaces, inner or outer, of the flexible sheet (21) exposed to the cold of the chamber and removing frost from said flexible sheet (21).

The invention relates to an enclosure for refrigerating chambers, suitable for closing an access (3) to a refrigerating chamber and comprising: —a sliding refrigerating door (1), and —a quick-opening door (2), both assembled on the same side of the chamber, comprising a frame with vertical posts (4), comprising: —on an outer face, at least one mouth (42) wherein a fan (6) is coupled which introduces air in the corresponding vertical post (4); —on the inside thereof, a deflector plate (61) which directs the air towards electrical resistors (7) for heating the air, situated underneath the deflector plate and, —on an inner face, an outlet (43) for supplying hot air on one of the surfaces, inner or outer, of the flexible sheet (21) exposed to the cold of the chamber and removing frost from said flexible sheet (21).

A fire or smoke curtain comprising ng a plurality of panels (4.sub.1, 4.sub.2, 4.sub.3) of fire curtain material. The panels are arranged to overlap at their edges (7) when the curtain is deployed. Each over-lapping edge has a metallic reinforcing strip (12) that are incorporated with the panels having the said edge along the latter.

A clutch assembly for a roller door operator, the clutch assembly providing selective engagement with a drive wheel, the clutch assembly comprising: a rotatable shaft rotatable relative to the drive wheel; a clutch disc supported in a clutch lever and arranged to rotate with the rotatable shaft, the clutch disc and clutch lever configured to rotate relative to one another around the axis of rotation of the shaft; and a clutch cam supported in a clutch base, the clutch base configured to permit operative rotation of the clutch cam around the axis of rotation of the shaft in a first direction; wherein the clutch lever is operatively associated with the clutch cam so that rotational movement of the clutch lever in a second direction opposite to the first direction actuates movement of the clutch disc and the clutch lever axially along the rotatable shaft to engage or disengage the clutch disc with the drive wheel, and subsequent rotational movement of the clutch lever in the first direction actuates rotational movement of the clutch cam relative to the clutch base in the first direction.