Patents Assigned to Cleveland Machine Controls
  • Brushless DC motor
    Patent number: 5710474
    Abstract: An improved, brushless, slot-less DC motor is disclosed which includes a plurality of ring shaped permanent rotor magnets affixed to the motor shaft and magnetized to have contiguous pole faces extending about the circumference thereof. A module plastic housing impregnated with powder metal particles is provided as a magnetic shunt to eliminate prior art ferrite-oxide laminations while assuring concentration of the rotor's magnetic flux into coils positioned in the physical air gap between the rotor and stator housing.
    Type: Grant
    Filed: June 26, 1995
    Date of Patent: January 20, 1998
    Assignee: Cleveland Machine Controls
    Inventor: Robert L. Mulgrave