A firestat for providing an output for controlling an opening and closing of a fire/smoke damper. The firestat includes a fire/smoke damper test switch and an actuator configured to depress the fire/smoke damper test switch. The firestat is further configured to release the fire/smoke damper test switch in response to a depressing force applied to the actuator, wherein melting or other damage to the actuator causes a release of the test switch.

In one or more arrangements, a system is presented for preventing the spread of fire through a conveyor opening in a fire wall. In one or more arrangements, a fire door system is connected to the fire wall and/or conveyor proximate to the conveyor opening. The fire door system includes a door assembly, a door frame assembly, and an actuator. The door frame assembly is connected to the fire wall, covers portions of the opening below the conveyor and between belts of the conveyor, and forms a door opening above the conveyor. The door assembly is configured to move between a closed position, where door assembly covers the door opening, and an open position, where the door assembly at least partially uncovers the door opening. The actuator is configured to cause the door to be moved to the closed position in response to fire.

A resetting element for transmitting resetting force to a thermal switch. The resetting element includes a first end and an elastic element configured to transmit a force received at the first end to the reset switch of the thermal switch, wherein the elastic element is prevents damage to the thermal switch by decreasing the force transmitted to the reset switch from the first end.

A fire protection element for sealing a combustible body which penetrates an opening in a wall or ceiling, in the event of a fire, contains a fire protection insert and a heat-activatable drive for the fire protection insert, wherein the fire protection insert is in an initial position within the wall or ceiling and, in the event of a fire, is moved into a use position in which the fire protection insert is at least partially outside the wall or ceiling.

This invention relates to a fire collar (10) that includes a housing (11) having a bore that includes a first opening (13) and a second opening (18), said second opening being spaced from said first opening by at least one side wall (12), and wherein the fire collar further includes mounting means (14) for mounting said housing to a supporting structure, said mounting means being located adjacent said first opening. The fire collar also includes a layer of intumescent material (46) contained within the bore, adjacent the first opening, and supported in said bore adjacent the side wall. The fire collar also includes one or more torsion springs (48) which are operatively connected to the housing and wherein each spring includes a first leg (50) and a second leg (51). The second leg (51) is capable of movement between a first or non-operating position proximal to the layer of intumescent material and a second or operational position whereby said layer of intumescent material that is in contact with said second leg, either directly or indirectly, at least partially

An active stairwell compensation system includes air injection points at different elevations in a stairwell; a fan for providing airflow to the air injection points; sensors; air injection dampers; and a controller in data communication with the fan, the sensors, and the air injection dampers. At least some of the sensors are located inside the stairwell, and at least some of the sensors are located outside the stairwell. A respective air injection damper is located between each air injection point and the fan. The controller has programming to utilize data from the sensors to adjust an amount of air provided by the fan and independently adjust the air injection dampers to maintain a desirable amount of air pressure at the air injection points. The desirable amount of air pressure is selected to prevent smoke from entering the stairwell while allowing stairwell doors to open for egress.

A fire and smoke actuator includes a temperature sensor for sensing an operating temperature of the fire and smoke actuator, a drive motor, an actuator output for coupling to the damper in order to move the damper between the open position and the closed position and a drivetrain that is operably coupled between the drive motor and the actuator output. The drive motor, when activated, is configured to actuate the actuator output, via the drivetrain, to move the damper between the open position and the closed position. A drive circuit is operably coupled to the drive motor and the temperature sensor and is configured to activate the drive motor to move the damper between the open position and the closed position at a non-zero speed that is based, at least in part, on the operating temperature sensed by the temperature sensor.

A hot melt safety door holder device includes: a first fixing part on one side of swing end of swing door sheet; a holder with a transverse through hole and the outer hole end faces towards the first fixing part; a second fixing part in the transverse through hole, the first radial end faces towards the outer hole end of transverse through hole, the second radial end faces towards the inner hole end; a conically cylindrical space, formed between the periphery of the second fixing part and the transverse through hole, and the inside and outside diameters of the end between the transverse through hole and the second fixing part corresponding to the space tapering end of conically cylindrical space are fitted with each other. The shape of the low-melting metal material filled in the conically cylindrical space matches the shape of conically cylindrical space, resulting in equal wall thickness.

There is provided a ceiling panel for a pod room. The ceiling panel comprises one or more cover components movable between an open configuration and a closed configuration; and an actuation mechanism configured to move the one or more cover components from the closed configuration to the open configuration in response to a trigger. The ceiling panel may provide a specified percentage open area in the open configuration. The ceiling panel may be adapted to acoustically insulate the pod room in the closed configuration.

A firestat for providing an output for controlling an opening and closing of a fire/smoke damper. The firestat includes a fire/smoke damper test switch and an actuator configured to depress the fire/smoke damper test switch. The firestat is further configured to release the fire/smoke damper test switch in response to a depressing force applied to the actuator, wherein melting or other damage to the actuator causes a release of the test switch.