B - Operations – Transporting – 05 – B
Patent
B - Operations, Transporting
05
B
222/53
B05B 9/043 (2006.01) A63C 19/08 (2006.01) B05B 7/24 (2006.01) B05B 9/04 (2006.01) E01C 23/22 (2006.01)
Patent
CA 1059081
SPRAYING APPARATUS Abstract of the Disclosure A spraying apparatus utilizes pressurized gas to spray liquid contained in a large replaceable or refillable cartridge. The cartridge is positioned within a casing which provides a pressure chamber, and a source of pressurized gas is attached to the casing to pressurize the chamber. The top of the cartridge communicates with the chamber so that the liquid is also pressur- ized. A tube extends from above the level of the liquid in the cartridge to the bottom of the cartridge and is attached to a valve. An opening is provided in the tube adjacent to the bottom of the cartridge, and the diameter of the tube is reduced above the opening to restrict the flow of gas through the tube and to create a pressure differential in the tube. When the valve is open, pressurized gas flows through the tube, and, since the pres- sure of the gas inside the tube at the opening is less than the pressure of the fluid, liquid flows through the opening mixes with the gas within the tube, and flows through the valve.
295587
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