| 摘要 |
<p>A method for manufacturing a clean air duct (150) includes the steps of providing at least two tubular bodies (152, 156) having at least one open end (153, 157), each said open end having an annular ring (168, 168a) which terminates at an inwardly extending lip (166, 166a); closing an injection mold (210) around each annular ring; injecting a polymeric material into the injection mold to form a cuff (160) around the annular rings, thereby connecting the tubular bodies to form an air duct; opening the injection mold and, removing the air duct from the injection mold. Clean air ducts (10) for interconnecting an air filter to a throttle body comprise a blow molded tubular body (12) with at least one open end (14,16), the open end having an annular ring (72) which terminates at an inwardly extending lip (86) and, connecting means (30) molded around and secured to the annular ring, and the lip. Another clean air duct (150) comprises a pair of tubular bodies (152, 156), each tubular body having a pair of opposed ends (153, 154, 155, 157), at least one of the opposed ends of each tubular body having an annular ring (168, 168a) which terminates at an inwardly extending lip (166); and a cuff (160) connecting the annular rings and the inwardly extending lips. <IMAGE></p> |
