Eddy current brake system with dual use conductor fin

B - Operations – Transporting – 60 – L

Patent

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Details

B60L 7/28 (2006.01) B66B 5/16 (2006.01) H02K 49/04 (2006.01)

Patent

CA 2415841

An eddy current brake system with dual use conductive fin (40, 60) includes a linear array of spaced apart permanent magnets (16, 18) and a non-magnetic electrically conductive fin. The magnets are mounted with respect to the fin for enabling passage past one another at a distance sufficient to cause eddy currents to be induced resulting in a braking force between the magnets and the fin. A mechanical brake (36, 70) is provided for frictionally engaging the fin and a surface treatment of the fin and enables the fin to sustain mechanical abuse of friction without effecting a change in the eddy current braking.

Cette invention concerne un système de freinage magnétique avec lame conductrice à double usage (40, 60) comprenant un ensemble linéaire d'aimants permanents (16, 18) espacés les uns des autres et une lame non magnétique électriquement conductrice. Les aimants sont disposés par rapport à la lame pour que le passage s'effectue à une distance suffisante pour induire des courants de Foucault qui créent une force de freinage entre les aimants et la lame. On trouve un frein mécanique (36, 70) qui assure l'engagement par frottement de la lame. Ladite lame présente un traitement de surface qui lui permet de supporter frottements mécaniques répétés sans que le freinage par courants de Foucault s'en ressente.

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