Patent ID: 7549449

Claim:
A paint delivery and application system, comprising: a paint supply switching device including at least two sources of paint; at least two paint canisters; a paint applicator; a first pair of separate supply lines connecting said paint supply switching device and said paint canisters; a pigging element movable in each of said first pair of supply lines between a first station adjacent said paint supply switching device and a second station adjacent one of said paint canisters; a second pair of separate supply lines connecting said canisters to said paint applicator; and a pigging element in each of said second pair of separate supply lines movable between a first station adjacent one of said paint canisters and a second station adjacent or within said paint applicator; whereby a first paint may be delivered from a first of said paint canisters to said paint applicator while a second paint is delivered from said paint supply switching device to a second of said paint canisters; and wherein said second of said paint canisters is electrically isolated from said paint applicator when said second paint is delivered from said paint supply switching device to said second of said paint canisters and/or said paint supply switching device is electrically isolated from said first of said paint canisters when said first paint is delivered from said first paint canister to said paint applicator.