Flexible dual wall hose or pipe assembly

F - Mech Eng,Light,Heat,Weapons – 16 – L

Patent

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Details

F16L 11/20 (2006.01) F16L 11/04 (2006.01) F16L 39/00 (2006.01) F16L 39/02 (2006.01)

Patent

CA 2145970

A dual pipe installation comprising a sump including a wall having inner and outer surfaces, and an opening extending there between, a pipe assembly extending into the sump and comprising an outer flexible pipe extending lengthwise and being defined by an endless wall which includes a plurality of corrugations in serially adjacent lengthwise relation, and a lengthwise inwardly open channel, and an inner flexible pipe which extends within the outer pipe, which is defined by an endless wall defining an interior and including a plurality of corrugations in serially adjacent lengthwise relation, and a projecting end portion extending axially outwardly beyond the end of the outer pipe and having an outer end, and which defines, with the outer pipe, an annular space.

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