Electromagnets for brakes and clutches

Details Electromagnets for brakes and clutches Electromagnets for brakes and clutches

1978-06-12

1980-08-12

Halvosa, George E. A.

Brakes

Operators

Automatic

188163, 192 35, 192 84T, 335281, B60T 712

Patent

active

042168490

ABSTRACT:
An electromagnet for brakes and clutches having outer and inner poles and an electrical coil for creating a magnetic field between these poles is provided having a circumferential gap in the forward portion of the outer pole. The gap reduces the flux density over the forward portion of the magnet face while increasing the flux density over the rearward portion. The variable flux density over the magnet face thus establishes an unbalance of forces attracting the magnet toward the armature plate causing the magnet to engage the armature plate heel first thereby eliminating "squeal" caused by magnet gouging and two plane wear of the magnet's friction face.

REFERENCES:
patent: 4004262 (1977-01-01), Grove
patent: 4172242 (1979-10-01), Myers et al.

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