| 摘要 |
<p>A conduit corner piece, lid and cover plate are produced with a minimal requirement for welding edges. The corner piece 20 has a base 22 with first edges 24, 26, separated by second edges 28. Sides 30, 32 extend from first edges 24, 26 perpendicular to the base 22. Sides 30, 32 have third edges 34, 36 respectively. Lid 40 comprises a generally planar surface 42 having first edges 44, 46 separated by respective second edges 48. First edges 44, 46 have extending from them, perpendicular to said first surface, first edge portions 50, 52. Edge portion 50 is adapted to engage side 30 and edge portion 52 is adapted to engage side 32. Cover plate 80 comprises a planar surface 82 and edge portions 84, 86 and engages lid 40 adjacent lid 60. Edge portion 84 is generally straight and extends along the entire edge of surface 82 to which it is attached. Edge portion 86 engages edge portion 64 and extends only as far as 88. At point 88, edge portion 86 engages edge portion 52 of lid 40 so as to form a continuous surface therewith. <IMAGE></p> |
