An intermediate storage vessel has a cylinder container, a piston provided in the cylinder container so as to be slidable in a reciprocating manner, and an inpour hole portion is provided above the discharge hole portion. An insulation cover is provided so as to cover the intermediate storage vessel...http://www.google.com.au/patents/US7328862?utm_source=gb-gplus-sharePatent US7328862 - Method and device for electrostatic coating
