Eddy current braking apparatus

Details Eddy current braking apparatus Eddy current braking apparatus

1992-01-27

1993-06-15

Halvosa, George E. A.

Brakes

Internal-resistance motion retarder

Magnetic fluid or material

188164, 192 84PM, 335288, 335306, F16F 1503

Patent

active

052190501

ABSTRACT:
An eddy-current braking apparatus including a brake drum; an annular support disposed within the brake drum; a plurality of shafts mounted for rotation on the support and each disposed substantially parallel to the axis of the drum the shafts being spaced apart in an annular array on the support; and a permanent magnet fixed to each of the shafts directly adjacent to the brake drum and each having opposite polarity poles, disposed on opposite sides of the shaft. Also included is a drive mechanism for producing rotation of the shafts between braking positions wherein the magnets produce magnetic circuits including the brake drum and non-braking positions wherein the magnets produce magnetic circuits substantially excluding the brake drum.

REFERENCES:
patent: 4482034 (1984-11-01), Baermann
patent: 4896754 (1990-01-01), Carlson et al.
patent: 5064029 (1991-11-01), Araki et al.

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