Spin-blast apparatus

摘要: In a spin-blast apparatus for cleaning the interior of pipe, in which abrasive is fed to rotary blast nozzle caused travel interiorly along and mounted on support conduit journalled rotation within non-rotating housing by bearings, intake end bears against sealing gasket supported clamping means such way as prevent excessive leakage past gasket. The spaced from so define therewith space open atmosphere; thus, any leaks will fall not be forced under air pressure into bearings.