The 90 elbow die trap null which

摘要

PROBLEM TO BE SOLVED: To bring the elbow of an elbow type trap catch basin with a bucket near to a basin inwall. ;SOLUTION: An upward inspection cylinder socket 3, a sideway runoff socket 5, another sideway inflow socket 4 and a downward bottomed cylindrical body 6 are installed to a yard catch basin body 2 respectively. A flange 23 being joined with an inner circumferential surface in the vicinity of the runoff socket 5 through a packing and having upper-lower sliding rails on both sides is mounted at the upper opening end of a 90° elbow 8 at that time, and the sliding rails are slid by the pole of the portal type grip 17 of a bucket 7 housed in the bottomed cylindrical body 6 and the elbow 8 is set. Accordingly, the lower opening side of the elbow 8 can be formed flatly, and can be brought near to an inwall.;COPYRIGHT: (C)1999,JPO