ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,938, issued on March 24.
"Motion-activated sound player" was invented by Chad Ballhagen (Wilmot, S.D.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A motion-activated sound player is provided. In embodiments, the motion-activated sound player includes a motion sensor assembly and a temperature sensor. When the motion sensor assembly detects motion and the temperature sensor determines an operating temperature is within a predetermined operating temperature range, the motion-activated sound player plays one or more audio tracks. In further embodiments, the motion-activated sound player includes temperature elements, such as heating elements and hea...