UQM Technologies Receives U.S. Patent on Rotor Geometry for Permanent Magnet Electric Motors

FREDERICK, Colo.--UQM TECHNOLOGIES, INC. , a developer of alternative energy technologies, announced today that it has been granted United States patent number 7,598,645 entitled “Stress distributing permanent magnet rotor geometry for electric machines.” The patent covers a novel rotor geometry that minimizes magnet content and maximizes the speed capability of the motor. The reduction in the amount of magnet material enabled under this patent is expected to result in lower production costs for electric propulsion systems for passenger automobiles.

“This patented geometry continues our longstanding efforts to minimize the magnet content and lower the production cost of our electric machines. We are pleased by the breadth of protection provided by this patent,” said Jon Lutz, UQM Technologies’ Vice President of Technology. “This award is another step in our ongoing technology development activities direct toward maintaining our leadership position in efficiency, power density and torque delivery.”

UQM Technologies, Inc. is a developer and manufacturer of power dense, high efficiency electric motors, generators and power electronic controllers for the automotive, aerospace, military and industrial markets. A major emphasis of the Company is developing products for the alternative energy technologies sector including propulsion systems for electric, hybrid electric, plug-in hybrid electric and fuel cell electric vehicles, under-the-hood power accessories and other vehicle auxiliaries and distributed power generation applications. The Company’s headquarters, engineering and product development center, and motor manufacturing operation are located in Frederick, Colorado. For more information on the Company, please visit its worldwide website at www.uqm.com.