ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,525,909, issued on Jan. 13, was assigned to ZF Automotive UK Ltd. (Solihull, Great Britain).
"Motor drive circuitry" was invented by Tamas Terdy (Birmingham, Great Britain) and Kevin Cockerham (Sutton Coldfield, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A motor drive circuit comprising: a motor bridge, comprising a bridge arm comprising upper and lower switches for each motor phase, which may be selectively closed to modulate voltage applied to the respective phases to drive signals from a motor control circuit, at least one solid-state-phase-isolation-relay (SSPIR) provided in series in an electrical path connecting a respective phas...