US Patent Issued to Pentair Water Pool and Spa on May 19 for "Variable speed pumping system and method" (North Carolina Inventors)

ALEXANDRIA, Va., May 19 -- United States Patent no. 12,631,187, issued on May 19, was assigned to Pentair Water Pool and Spa Inc. (Cary, N.C.).

"Variable speed pumping system and method" was invented by James Miller (Sanford, N.C.) and Ryan Weaver (Cary, N.C.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of operating a variable speed pumping system. The method includes measuring a first power consumption value of a pool pump at a first speed, estimating a first total dynamic head value at the first speed, measuring a second power consumption value of the pool pump at a second speed, estimating a second total dynamic head value at the second speed, and generating a system friction curve based on the...