A controller opens or closes a valve in response to the ambient temperature crossing a threshold value, for example to prevent the continued supply of water to pipes that might have frozen and burst. An output shaft (4) acts on a stem of the valve to rotate it between the open and closed positions. A clock spring (8) biases the output shaft towards one of those positions but is restrained by a latch (28) until a thermal actuator (30) operates mechanically to release the latch in response to a change in temperature. The latch may be a pawl (28) acting on a ratchet gear (22) that allows the output shaft (4) to rotate in one direction but not the other. The ratchet gear (22) may be mounted on an input shaft (14), which is connected to the output shaft (4) through a gear train (16-19) to give a mechanical advantage when turning the output shaft (4) against the force of the spring (8).

A controller opens or closes a valve in response to the ambient temperature crossing a threshold value, for example to prevent the continued supply of water to pipes that might have frozen and burst. An output shaft (4) acts on a stem of the valve to rotate it between the open and closed positions. A clock spring (8) biases the output shaft towards one of those positions but is restrained by a latch (28) until a thermal actuator (30) operates mechanically to release the latch in response to a change in temperature. The latch may be a pawl (28) acting on a ratchet gear (22) that allows the output shaft (4) to rotate in one direction but not the other. The ratchet gear (22) may be mounted on an input shaft (14), which is connected to the output shaft (4) through a gear train (16-19) to give a mechanical advantage when turning the output shaft (4) against the force of the spring (8).

A multi-layer rolling fire curtain assembly includes: a multi-layer fire curtain wrappable about a roller and to be deployable between an extended position and an open position, such that a free end of the curtain is movable between a retracted position and an extended position. The fire curtain has a fire resistant inner curtain layer having a first width between first and second lateral edges, and a fire resistant outer curtain layer arranged opposite the inner layer and having first and second scalloped lateral edges varying between the first width and a second width less than the first width. The inner and outer layers are affixed to one another by horizontally oriented connection seams at the first width, the connection seams being configured so that the outer and inner layers are spaced apart by a plurality of baggy areas formed between adjacent connection seams.

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 real-time damper visual verification device and system for use in combination with a HVAC duct structure includes a camera being structured and disposed for generating image signals in response to an optical image and the camera being in connection with a computer processor for generating the optical image and a real-time clock display; the camera being positioned for viewing the damper blades of the HVAC duct structure; wherein a verification procedure includes operating of the plurality of damper blades between first and second movements, the first movement defining the damper blades moving from an open position to a closed position and the second movement defining the damper blades moving from a closed position and an open position; and in which the camera records the optical images of the first and second movements to provide a true visual verification of operation of the damper blades between the first and second movements.

A real-time damper visual verification device and system for use in combination with a HVAC duct structure includes a camera being structured and disposed for generating image signals in response to an optical image and the camera being in connection with a computer processor for generating the optical image and a real-time clock display; the camera being positioned for viewing the damper blades of the HVAC duct structure; wherein a verification procedure includes operating of the plurality of damper blades between first and second movements, the first movement defining the damper blades moving from an open position to a closed position and the second movement defining the damper blades moving from a closed position and an open position; and in which the camera records the optical images of the first and second movements to provide a true visual verification of operation of the damper blades between the first and second movements.

A storage system is disclosed where goods can be stored in containers and the containers are stored in stacks. Above the stacks runs a grid network of rails (e.g., tracks) on which load handling devices can run. To take containers from the stacks and deposit then at alternative locations in the stacks or deposit then at stations where goods may be picked. The framework may be provided with one or more of the following exemplary services: power, power control, heating, lighting, cooling, sensors, and data logging devices. The provision of these services within the framework rather than across the system as a whole, can allow for flexibility in storage whilst reducing cost and inefficiency.

An enclosure for safe transportation and storage of a battery or a collection of batteries. The enclosure contains a plurality of batteries held together by a polymer structure, wherein the polymer structure contains s pockets capable of encapsulating at least one fire extinguishing fluid. Sensors deployed on a surface of each battery in the plurality of batteries are capable of monitoring surface temperature and volume expansion of each battery in the enclosure and providing signal output. The enclosure also contains a toxic gas release management and containment system.

An approach is that uses a first amount of energy used by a motor to open a vent and reducing the amount of energy to a second amount of energy to maintain the vent in an open position.

A waterproof driving shaft includes an inner tubular member defining an accommodation space and extending along an axis, an electrical driving unit disposed in the accommodation space to actuate a movement of a moving shaft member along the axis relative to the inner tubular member. A shield unit is securely connected with the moving shaft member and seals the accommodation space to prevent moisture and humidity from entering the inner tubular member so as to prolong the service life of the driving unit.