Motor operated fire damper

Details Motor operated fire damper Motor operated fire damper

F - Mech Eng,Light,Heat,Weapons

24

F

98/53

F24F 13/10 (2006.01) A62C 2/14 (2006.01) F24F 13/14 (2006.01)

Patent

CA 1194356

A B S T R A C T A fire and smoke damper having an electric motor coupled with the damper to hold the damper blades open when the motor is energized. A spring associated with the motor provides torque for closing the blades when the supply of electrical energy to the motor is interrupted. A thermal responsive electrical switch is mounted on the damper and incorporated in the electric circuit which supplies energy to the motor so that the motor is deenergized and the damper is closed when the ambient temperature reaches a predetermined level.

441734

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