ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,404,860, issued on Sept. 2, was assigned to GRUNDFOS HOLDING A/S (Bjerringbro, Denmark).

"Method and apparatus for detecting hydraulic shock" was invented by Torben Nielsen (Bjerringbro, Denmark) and Jesper Thorring Damgaard (Bjerringbro, Denmark).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed herein are embodiments of an apparatus for detecting hydraulic shock events in a fluid system, the fluid system comprising a pump assembly, the pump assembly comprising a pump, in particular a centrifugal pump, and a pump motor, the apparatus comprising means for monitoring a pump speed of the pump and/or for monitoring a motor frequency; and a processing...