Abstract: This invention relates to a fire and smoke damper assembly capable of being positioned in interruptive disposition relative to the flow of air through a conduit wherein the assembly includes a flexible curtain movably mounted on the frame and attached in driven relation to a curtain mounting rod rotatably mounted on the frame. The rod and curtain are driven manually by biasing means or by exteriorly mounted motor means. Curtain guide elements including a pair of screens are arranged in spaced, substantially parallel relation to one another across the face of the conduit so as to define a channel in which the curtain is movable relative to the screens into and out of engagement about the curtain periphery with the frame.

Abstract: An air conditioning system capable of regulating the temperature of incoming air and further comprising safety features relating to the sensing of abnormal conditions within a room or like treated area concerning the detection of fire, smoke or abnormally high temperature conditions. The flow of air from the exterior of the system is directed to the interior of the room or area being conditioned by a fan or like blower element while being conditioned through direct exposure to hot or cold conditioning fluid. Safety features include sensing elements connected to a liquid spray assembly as well as the blower and air intake so as to determine the amount of incoming air pressure as well as regulate the delivery of certain safety liquids such as water, through the spray assembly.