Patent ID: 8875647

Claim:
A coating device, for painting motor vehicle bodies, comprising: an atomiser for applying a coating agent by means of an application element, and an internal color-changer valve assembly with several paint inlets for selecting coating agents of different colors, where the internal color-changer valve assembly is structurally integrated into the atomiser and connected to the application element at the outlet end, to supply the application element with the selected coating agent, and an external color-changer valve assembly with several paint inlets for selecting coating agents of different colors, where the external color-changer valve assembly is structurally separate from the atomiser and connected to the application element at the outlet end, to supply the application element with the selected coating agent, wherein: the external color-changer valve assembly has at least two separate paint outlets; the atomiser has at least two additional paint inlets, to which the paint outlets of the external color-changer valve assembly are connected, in addition to the paint inlets of the internal color-changer valve assembly; two recirculation valves are provided, which facilitate recirculation for each paint outlet of the external color-changer valve assembly; a first metering device and a second metering device in the form of a geared pump; the geared pump has a plurality of pumping chambers, each containing a pair of gearwheels configured to rotate within their respective chambers, the individual pumping chambers each supply one of the paint inlets of the atomiser; the geared pump has a common driveshaft to drive the individual pairs of gearwheels; and the driveshaft includes a key disposed within the driveshaft, the key configured to move axially along the driveshaft to selectively engage each of the gearwheels.