Multi-layered flexible piping and method and machine for forming

Details Multi-layered flexible piping and method and machine for forming Multi-layered flexible piping and method and machine for forming

1991-06-17

1993-07-20

Hornsby, Harvey C.

Pipes and tubular conduits

Distinct layers

With intermediate insulation layer

138122, 138135, 138154, 138143, 138144, F16L 914

Patent

active

052284794

ABSTRACT:
Flexible piping includes a first, spiral-wound band forming an inner winding and a second, spiral-wound band forming an outer winding in covering relationship over the inner winding. Inner and outer spiral-wound bands of insulating material are wound between the inner and outer windings and over the outer winding respectively. An insulating sleeve receives the spiral-wound inner and outer windings and the inner and outer insulating material bands. A method and a machine for forming the flexible piping are also disclosed.

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