Patent ID: 7325750

Claim:
A powder coating spray system comprising: a spray booth that at least partially encloses a spray area in which powder overspray is produced during a spraying operation; a powder feed apparatus that supplies powder to spray guns in said booth; a powder extraction apparatus that removes said powder overspray from said booth and transfers said powder overspray to a first collection device, said first collection device comprising a cyclone; a vacuum line with first and second ends that connects said cyclone to a second collection device; and a vacuum source connected to said cyclone through said vacuum line and producing a negative pressure within said vacuum line between said first and second ends to transfer powder overspray from a powder outlet of said cyclone to said second powder collection device, wherein said vacuum source is connected to a vacuum receiver that houses a filter assembly, said vacuum receiver receives powder from said cyclone and supplies said cyclone-received powder to a powder feed hopper.