Method and apparatus for regulating the closing speed of a...

Details Method and apparatus for regulating the closing speed of a... Method and apparatus for regulating the closing speed of a...

E - Fixed Constructions

05

F

E05F 15/00 (2006.01) A62C 2/24 (2006.01) E06B 9/84 (2006.01)

Patent

CA 2284953

A mechanism for regulating the closing speed of a rolling fire door during an emergency condition. The speed regulating mechanism includes a viscous speed governor which is operatively connected to the support shaft of the fire door for providing a speed regulating damping torque as the door moves to a closed position. Methods for regulating the closing speed of a fire door during an emergency condition are also disclosed.

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