US Patent Issued to Tallstam on Nov. 11 for "Revolving valve for feeding air pulses to a resonance tube for generating low-frequency sound and a method for feeding these pulses in an optimal way" (Swedish Inventor)

ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,469,478, issued on Nov. 11, was assigned to Tallstam AB (Bromma, Sweden).

"Revolving valve for feeding air pulses to a resonance tube for generating low-frequency sound and a method for feeding these pulses in an optimal way" was invented by Mats Olsson (Lidingo, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for feeding pressurized air pulses to a quarter wave resonance tube, for generating a standing low-frequency sound wave in said quarter wave resonance tube. The method entails that the pressurized air pulses supply maximum input power to said standing low-frequency sound wave by feeding said pressurized air pulses only during the ti...