Abstract: Apparatus for mixing a medium in a vessel has structure for moving the vessel in a path defining a cone. A clamp assembly includes jaws which releasably clamp the vessel in the apparatus and prevent rotation of the vessel around its own axis. The structure includes a spherical bearing mounted at each end of the clamp assembly. A threaded shaft for moving one of the jaws is axially slidably received in one of the spherical bearings. The other spherical bearing connects a shaft extending from the other jaw at an eccentric position relative to a rotary shaft of a drive motor.

Abstract: A system is disclosed for the controlled depth scoring of conduits for the pneumatic transfer of particulate plastic materials comprising: a scoring assembly having interconnected drive power inlet means, motor drive means, drive coupling means, centering means and controlled depth score cutting means; and feed means connected therewith for longitudinally passing said scoring assembly through said conduits at a controllable uniform speed.