Patent ID: 6439355
Filing Date: 2002-08-27
Classification: F16D

Abstract:
An electromagnetic brake system for controlling motion of a movable component, the brake system comprising:a support; a magnet body mounted to the support and having at least one coil mounted thereon which is adapted to generate an electromagnetic field when activated; a back plate mounted adjacent to and engaged with the magnet body; an armature plate located adjacent to the magnet body and adapted to be positioned between the magnet body and the movable component, the armature plate having a first side located adjacent to the at least one coil, and a second side adapted to be located adjacent to a portion of the movable component, the armature plate being movable relative to the magnet body; a brake shoe located on the second side of the armature plate; and at least one spring on the magnet body between the magnet body and the armature plate for biasing the armature plate away from the magnet body, the at least one spring having a spring force that is less than the force of the electromagnetic field that is capable of being generated on the armature plate by the at least one coil such that activation of the coil moves the armature plate toward the magnet body overcoming the spring force.