ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,496,254, issued on Dec. 16, was assigned to DLHBOWLES INC. (Canton, Ohio).

"Spa nozzle with variable cross-section inertance loops assembly and method" was invented by Samuel Bernstein (Annapolis, Md.) and Alex Dotzler (Potomac, Md.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fluidic geometry, chip, and nozzle assembly capable of providing multiple oscillation frequencies without the need for moving parts is contemplated. A fluidic circuit having feedback loops with differing cross-sectional areas will allow for output of oscillating sprays having different frequencies based upon fluid pressure."

The patent was filed on July 21, 2023, under Applic...