Patent ID: 6821096
Filing Date: 2004-11-23
Classification: B01F,B44D,F04B

Abstract:
A pumping apparatus for pumping at least a component of a coating material, the pumping apparatus including a first piston, a first cylinder in which the first piston is reciprocable to draw the at least a component of a coating material to be pumped into the first cylinder during an intake stroke of the pumping apparatus and to exhaust the at least a component of a coating material from the first cylinder during an exhaust stroke of the pumping apparatus, the first cylinder including a support, at least two pumping motors, the first cylinder oriented between the pumping motors, the pumping motors being coupled to the support and to the first piston to move the support and first piston relatively toward each other during an exhaust stroke of the pumping apparatus and relatively away from each other during an intake stroke of the pumping apparatus.