Laitance drain avoiding method for flexible rubber pipe of concrete pipe bucket in building site, involves folding rubber pipe on itself near outlet orifice, and squeezing pipe along its length atlevel of its folded part

摘要

The method involves folding a flexible rubber pipe (3) on itself near an outlet orifice (4), and squeezing the pipe along its length at level of its folded part (6) using a squeezing device i.e. clip (7), where the squeezing device is made of a plastic material i.e. ultramid polyamide. A free end of the pipe is vertically maintained under a concrete bucket (1), where the outlet orifice of the pipe is turned towards top. Horizontal lateral movement of the pipe is blocked using a blocking unit i.e. protrusion. An independent claim is also included for a squeezing device for avoiding drain of laitance at an outlet orifice of a flexible rubber pipe of a concrete bucket.