| 摘要 |
<p>A vacuum cleaner hose and method and apparatus of making the same are provided, the hose (20) having opposite ends (24, 25') and a plurality of annular corrugations (25) between the opposite ends thereof, the corrugations comprising a plurality of alternating annular crests (26) and annular valleys (27) that are interconnected together by annular side walls (28), each valley (27) and each crest (26) defining a radius (29, 31) at the apex (30, 32) thereof, each valley (27) being narrower than the crests (26) and having a smaller radius (29) than the crests.</p> |
