Patent · US Active

Extruded multiwall tubular structure

US9052039B2 · kind B2 · utility

3Cited by

30References

20Claims

0Family size

Assignee

GYRE INNOVATIONS, LLC · US

Inventors

Stephen Mettee, II · Red Lion, US
Clay Tully · Hummelstown, US
Stephen W. Tansey · York, US

Key dates

Filing date	Dec 27, 2013
Grant date	Jun 9, 2015
Priority date	—
Expiry date	Dec 27, 2033

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB65H2404/117
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

An extruded multiwall tubular structure formed from extrusion dies, the structure includes a core having a longitudinal axis and a first wall surrounding the core. At least one form extends helically relative to the longitudinal axis and between the core and the outer wall in supporting relationship therewith. At least the first wall and the at least one form lack residual strains, as a result of stress created by the manufacturing process, subsequent the structure exiting the extrusion dies. The core is concentric with the first wall.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.