US Patent Issued to SIEMENS SCHWEIZ on April 1 for "Half-step motor driver" (Swiss Inventors)

ALEXANDRIA, Va., April 2 -- United States Patent no. 12,267,037, issued on April 1, was assigned to SIEMENS SCHWEIZ AG (Zurich).

"Half-step motor driver" was invented by Christoph Buob (Lucerne, Switzerland), Richard Bork (Lucerne, Switzerland) and Norbert Glensk (Lindlar, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "An HVAC system comprising: an appliance; a control assembly; a first motor; and a second motor. The control assembly: applies a electric signal to the first terminal of the first winding of the first motor for a number of intervals of time; afterwards, apply a second signal to the first terminal of the first winding; apply the first electric signal to the first terminal of the seco...