ALEXANDRIA, Va., July 23 -- United States Patent no. 12,366,310, issued on July 22, was assigned to Techreo LLC (Loveland, Ohio).
"Helically wound tubular structures" was invented by Kevin B. McNeil (Loveland, Ohio), Gregory V. McNeil (Dewitt, Mich.), Wayne R. Fisher (Cincinnati) and Thomas T. Byrne (West Chester, Ohio).
According to the abstract* released by the U.S. Patent & Trademark Office: "A helically wound tubular structure formed from helically wound sheet metals is disclosed. The tubular structure has a first sheet metal helically wound about a longitudinal axis. A second sheet metal having voids disposed therein is helically wound about the longitudinal axis and coaxially about the first sheet metal. A third sheet metal is helic...