| 摘要 |
<p>An extensible connector for plumbing systems comprising a hollow metal tube 4 featuring on its end a part-spherical surface 6 and a ring nut 7 and on the other end a threaded union 9,19,20 featuring a flat compression washer 12, the said metal tube 4 being slideable between a minimum (Fig. 3 not shown) and maximum extension, Fig. 1. <IMAGE></p> |
