US Patent Issued to Bajoc Music Enterprises on June 17 for "Valve guide with external return spring for musical instrument" (Michigan Inventor)

ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,841, issued on June 17, was assigned to Bajoc Music Enterprises LLC (Portland, Mich.).

"Valve guide with external return spring for musical instrument" was invented by Jacob Hoskins (Portland, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A piston valve for a brass-wind musical instrument has spring barrel in which are formed opposing first and second keyways. A valve stem screws onto the top of the spring barrel. A loose key extends transversely through the first and second keyways. A bottom ring is slidably disposed around the spring barrel. The bottom ring has opposing notches. The loose key acts as a cross-bar supporting the bottom ring i...