United Technologies Corporation

Gregory S Scheiferstein

Steven Dill

Matthew J Howlett

Craig Michael Callaghan

Brittany Zabinski

Aspects of the disclosure are directed to a tube assembly comprising: a first tube having a radial exterior surface, a second tube composed of a plurality of segments, the first tube co-axially nested within the second tube, at least a first spacer coupled to the first tube, and a second spacer coupled to the at least a first spacer, where a first segment of the plurality of segments is coupled to a first axial end of the second spacer, and a second segment of the plurality of segments is coupled to a second axial end of the second spacer.

Double walled tube and manufacture thereof

In various embodiments, a double wall pipe assembly may comprise a coupling, a first pipe, a second pipe, a first piloted flange and second piloted flange. The coupling may define a minor diameter receivable slot and a major diameter receivable slot. The double wall pipe may be configured to conduct a fluid. The double wall pipe operatively coupled to the coupling. The double wall pipe may comprise a first pipe, a second pipe, a first piloted flange, and a second piloted flange. The second pipe may be sleeved over the first pipe. The first piloted flange may be operatively coupled to the first pipe. The first piloted flange may be installable in the minor diameter receivable slot. The second piloted flange may be coupled to the second pipe. The second piloted flange may be installable in the major diameter receivable slot.

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West Hartford, CT, United States of America

Gregory S Scheiferstein