ALEXANDRIA, Va., May 19 -- United States Patent no. 12,633,859, issued on May 19, was assigned to Board of Regents, The University of Texas System (Austin, Texas).
"Portable variable frequency drive" was invented by Matthew Peter May (San Antonio), John A. Saldana (Puyallup, Wash.) and Brent Carlton Tyroff (Boerne, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed herein is a variable frequency drive. More specifically, the present invention generally relates to a device and method of use for a portable variable frequency drive to provide a portable means for expeditiously restoring operation to critical equipment resulting from variable speed motor controller (VFD) failures."
The patent was fi...