Patent ID: 6082378
Filing Date: 2000-07-04
Classification: B08B,F16L

Abstract:
A method for internal cleaning of a pipe or tube by inserting a projectile into and propelling said projectile through said pipe or tube by means of pressurized fluid, whereby projectiles are fed one by one, in a direction generally transversal in relation to a firing direction, through an open side (16) of a housing (8) and into a chamber (15) in said housing (8), whereupon a pressurized fluid source (50) is brought into communication with the chamber for ejecting the projectile from the chamber (15) and for inserting the same into said pipe or tube through a nozzle, and whereby the housing (8), when a projectile has been fed into the chamber (15), is pivoted from a loading position to a firing position for bringing its open side (16) in line with the nozzle and thereby to coincide with the firing direction, comprising the steps of:floatingly supporting the housing (8);pivoting the housing (8) to the firing position; andapplying a force by a force applicator (26) to the housing (8) in the firing direction for sealing the inlet (19,20) and outlet (16) of the housing (8).