Powder collectors

A powder spray booth and powder collector system comprising:

• a spray booth means defining a vented area within which an article to be coated may be sprayed, said spray booth means having a spray booth opening through which powder and air may be withdrawn;
• a housing defining a first chamber having means for coupling to an exhaust duct, said housing having therein at least one velocity stack means disposed adjacent a first chamber intake opening in said housing, said housing also having high pressure means for controllably directing a blast of air through said at least one velocity stack means and out said first chamber intake opening;
• a collector assembly structurally independent of said housing and defining a second chamber having disposed therein at least one filter element which is structurally supported entirely by said collector assembly, said second chamber having a first opening for cooperating with said spray booth to receive powder entrained in air to be filtered therefrom, and at least one second opening adjacent said at least one filter element and cooperatively disposed with respect to said first chamber intake opening so that air must pass through said at least one filter element to pass through said second opening, said second chamber being mobile so as to be readily movable with respect to said first chamber;
• and
• a manually operable means for coupling said collector assembly to said first chamber and simultaneously therewith sealingly engaging said at least one filter element with said at least one first chamber intake opening for communication with said at least one velocity stack means.