Patent 7671582 was granted and assigned to NSK Ltd. on March, 2010 by the United States Patent and Trademark Office.
The magnetic encoder is constituted by integrally bonding a magnet portion obtainable by forming a magnetic material containing a magnetic powder and a binder for the magnetic powder in a circular ring shape to a slinger. The binder contains at least a thermoplastic resin and an impact resistance-improving agent.