Abstract: 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 helically wound about the longitudinal axis and coaxially about the first sheet metal and the second sheet metal.
Type:
Grant
Filed:
January 20, 2020
Date of Patent:
July 22, 2025
Assignee:
Techreo LLC
Inventors:
Kevin B. McNeil, Gregory V. McNeil, Wayne R. Fisher, Thomas T. Byrne