US Patent Issued to Milwaukee Electric Tool on July 15 for "Sensorless motor control for a power tool" (Wisconsin Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,358,115, issued on July 15, was assigned to Milwaukee Electric Tool Corp. (Brookfield, Wis.).

"Sensorless motor control for a power tool" was invented by Timothy R. Obermann (Waukesha, Wis.), Douglas R. Fieldbinder (Greendale, Wis.) and Alexander Huber (Menomonee Falls, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for automatic control switching for driving a sensorless motor of a power tool, the method including generating, using a signal generator, a high-frequency injection signal. The method includes coupling, using a coupling circuit, the high-frequency injection signal to an injection coil of the sensorless motor. The method includ...