Heated windable rigid duct for transporting fluids,...

Details Heated windable rigid duct for transporting fluids,... Heated windable rigid duct for transporting fluids,...

2007-07-17

2007-07-17

Neuder, William (Department: 3672)

Wells

Conduit wall or specific conduit end structure

Flexible tube or cable

C166S077200, C138S033000

Reexamination Certificate

active

10500482

ABSTRACT:
Rigid wound or reelable pipe (1) for transporting hydrocarbons having a single-walled or double-walled envelope comprising two coaxial pipes, internal (2) and external (3), respectively, separated by an annular space, comprising at least one electrical heating cable (10) capable of being subjected to an elongation of 0.5% without sustaining damage and produced, for example, in the form of a central conducting braided cable surrounded by an electrically insulating sheath. The materials comprising the cable are subjected to elastically deformation by remaining below 15% of their elastic limit and preferably below 5%.

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patent: 6585046 (2003-07-01), Neuroth et al.
patent: 2001/0025664 (2001-10-01), Quigley et al.
patent: 2004/0163801 (2004-08-01), Dalrymple et al.
patent: 2 094 284 (1982-04-01), None
patent: WO 86/03362 (1986-06-01), None
International Search Report.

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