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1. (WO2003061845) PNEUMATIC PUMP SWITCHING APPARATUS

Pub. No.:    WO/2003/061845    International Application No.:    PCT/US2002/037866
Publication Date: Jul 31, 2003 International Filing Date: Nov 26, 2002
IPC: B05B 7/14
B05B 12/14
Applicants: NORDSON CORPORATION
BINDER, John, J.
Inventors: BINDER, John, J.
Title: PNEUMATIC PUMP SWITCHING APPARATUS
Abstract:
A coating material spray application system includes first and second coating material supplies (16); first and second coating material pumps (18) and first and second feed hoses (24); wherein each feed hose (24) is in communication with a respective one of the coating material pumps (18) and has a respective coating material hose outlet (26). Each pump (18) is operable to transfer coating material from a respective one of the supplies to the respective feed hose. A spray booth (12) may be used and a coating material spray gun (14) operable within said spray booth, with the spray gun (14) being connectable to a selected one of the coating material hose outlets (16). A source of pressurized air (30) operates the pumps; and a pneumatic switch (40) accessible from within the spray booth is operable to connect the pressurized air to a selected one of said coating material pumps which corresponds to the selected coating material hose outlet.