ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,177, issued on April 21, was assigned to NIDEC GLOBAL APPLIANCE BRASIL LTDA. (Joinville, Brazil).

"Piston positioning processes of a reciprocating compressor" was invented by Claudio Eduardo Soares (Joinville, Brazil) and Filipe Guolo Nazario (Joinville, Brazil).

According to the abstract* released by the U.S. Patent & Trademark Office: "A positioning process of a piston of a reciprocating compressor is applied before the beginning of a start procedure of a BLDC motor. The reciprocating compressor includes the BLDC motor having a rotor associated mechanically to the piston; a frequency inverter; a current sensor; and a processing unit having a current controller and a command un...