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Electromagnetic brake assembly

  • US 20060169550A1
  • Filed: 01/28/2005
  • Published: 08/03/2006
  • Est. Priority Date: 01/28/2005
  • Status: Abandoned Application
First Claim
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1. An electromagnetic brake apparatus for decelerating a rotating shaft of a piece of equipment, comprising:

  • a coil body having an axis;

    an electromagnetic coil and a spring housed in the coil body;

    a brake pad having a hub for attachment to the shaft for rotation therewith relative to the coil body;

    a mounting plate spaced from the coil body;

    an armature plate between the spring and the brake pad in electromagnetic communication with the electromagnetic coil, the armature plate being carried by the coil body to prevent rotation but allow axial movement relative to the coil body, the armature plate being drawn toward the coil body and away from the brake pad when the electromagnetic coil increases the magnetic field, and the armature plate being forced by the spring away from the coil body and into contact with the brake pad when the electromagnetic coil decreases the magnetic field;

    an annular spacer ring extending circumferentially around the axis of the coil body and radially outward from a perimeter of the brake pad, the spacer ring having one edge that abuts the coil body and an opposite endue that abuts the mounting plate; and

    a plurality of threaded fasteners extending from the coil body to the mounting plate for rigidly securing the coil body to the mounting plate with the spacer ring rigidly clamped therebetween to fix a desired distance between the coil body and the mounting plate, the fasteners being spaced circumferentially around the coil body radially outward of the perimeter of the brake pad.

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