| 摘要 |
<p>A laminar-flow flexible metal hose (20), constituted by a continuous metal profiled element (10;10';10'') which has a substantially annular cross-section and is wound in contiguous cylindrical helical turns which are mutually hermetically connected by continuous welding (SC); the profiled element (10) has, in cross-section, a flexible profile (P;P') with a flat base (11;11';11'') formed by two straight flaps (11a,11b;11'a,11'b;11''a,11''b) of the profiled element and at least one curved portion (12;12';12'') which protrudes from the base and connects the straight flaps; the profiled element (10;10';10'') is wound so that the flat base (11;11';11'') of the profile (P;P') forms the internal cylindrical surface (SI) of the laminar-flow hose (20) and the curved portion (12;12';12'') of the profile (P;P') forms the external surface (SE) with helical undulations of the hose (20). <IMAGE></p> |
