Supply Device for Supplying Coating Medium, Coating Medium Apparatus, System and Method of Supplying Coating Medium

A coating medium apparatus for applying coating medium to an object, the coating medium apparatus comprising:

• an inlet for receiving coating medium;
• a tank having a tank volume for receiving coating medium from the inlet;
• a piston movable relative to the tank to vary the tank volume;
• and
• a servomotor configured to control movements of the piston based on a position of the piston.

A coating system comprising:

• a supply device having
• a plurality of supply lines, and
• a switching device having a connection member to which each supply line is connected, the switching device being configured to move the connection member or the docking element in order to connect a selected supply line to the docking element for supply of coating medium from the selected supply line through the docking element;
• a coating medium apparatus having an inlet configured to be connected to the docking element.

A method of supplying coating medium to a tank, the method comprising:

• providing a supply device having a docking element, a plurality of supply lines and a switching device having a connection member to which each supply line is connected;
• providing a coating medium apparatus comprising an inlet and the tank;
• connecting the inlet to the docking element and receiving a first coating medium in the tank from a first supply line through the docking element;
• disconnecting the inlet from the docking element;
• and
• moving the connection member or the docking element in order to connect a second supply line to the docking element.