Eddy current retarder for use in emergency escape as from...

Details Eddy current retarder for use in emergency escape as from... Eddy current retarder for use in emergency escape as from...

H - Electricity

02

K

310/34

H02K 7/104 (2006.01) A62B 1/08 (2006.01) B66D 5/02 (2006.01) H02K 49/04 (2006.01)

Patent

CA 1201745

ABSTRACT A device utilizing energy conversion into heat by eddy currents for braking the descent of a refugee as from higher stories of a building in the event of a fire or other emergency. Included is a payoff reel rotatably mounted on a frame for paying off wire rope. The payoff reel is coupled via overdrive gears to a rotor of electrically conductive material which also is rotatably mounted on the frame and which rotates at a greatly increased speed in response to the rotation of the payoff reel. A permanent magnet or mag- nets of generally annular configuration are secured to the frame in an opposed relation to the rotor for inducing eddy currents therein upon rotation of the payoff reel. The in- duced eddy currents convert the energy of the revolving pay- off reel into heat.

455149

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