| 摘要 |
<p>A flexible protective sleeve (10; 20; 30; 40; 50) for protecting pipes or wires comprises a generally tubular wall (12; 22; 32; 42; 52) having a slit (14; 24; 34; 44) therein giving access to the interior of the sleeve. The wall comprises a layer of flexible sheet material (12a; 22a; 32a; 42a; 52a) extending from one edge of said slit to the other, and a plurality of ribs (12b; 22b; 32b; 42; 52b) secured to said flexible sheet material at longitudinal intervals. Each rib has a pre-set curvature circumferentially of the sleeve so that said ribs hold the flexible sheet material in the tubular form.</p> |
