Pipes and tubular conduits – Plural duct – With spacer and encircling element
Reexamination Certificate
2008-01-15
2008-01-15
Hook, James (Department: 3754)
Pipes and tubular conduits
Plural duct
With spacer and encircling element
C138S108000, C138S148000
Reexamination Certificate
active
07318453
ABSTRACT:
A spacing and centering device for a rigid double-wall duct, for example of the winding type, which is intended for the transport of hydrocarbons. The rigid duct comprises two coaxial tubes which are separated by an annular space. The spacing and centering device is housed in the annular space in order to maintain a distance between the two coaxial tubes. An element made from a material having low heat conductivity and comprising an aerogel element is at least partially covered with a casing of polymer-type plastic material.
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Hook James
Ostrolenk Faber Gerb & Soffen, LLP
Technip France
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