US Patent Issued to Evolution Controls on March 25 for "HVAC motor automation control unit and adjustment methods and apparatus for same" (California Inventors)

ALEXANDRIA, Va., March 26 -- United States Patent no. 12,259,151, issued on March 25, was assigned to Evolution Controls Inc. (Poway, Calif.).

"HVAC motor automation control unit and adjustment methods and apparatus for same" was invented by David Lee Haessig (Poway, Calif.), Ronald Sai Kit Yip (Poway, Calif.) and Roger Hort (Poway, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method and apparatus for an automation control unit (ACU) for converting an automation control signal to a pulse width modulation (PWM) signal to control the output of a HVACR device such as a variable speed (VS) motor in an HVAC system is disclosed. The invention limits the motor output between a high and low limit, keeping...