Dispensing – Processes of dispensing
Patent
1989-10-25
1991-06-11
Shaver, Kevin P.
Dispensing
Processes of dispensing
222 63, 222309, 118410, 118698, B05C 500
Patent
active
050225561
ABSTRACT:
A programmable volume dispensing apparatus having a positive displacement metering pump for dispensing varying amounts of high viscosity fluids such as soldering paste. The metering pump comprises a positive displacement metering pump and a digitally driven drive motor under programmable control. The drive motor is connected to the volume adjustment of the pump via a chain and sprocket mechanism. The chain and sprocket mechanism adjusts a stop which controls the stroke of the pump and the volume of fluid dispensed. In an alternate embodiment a flexible rotary drive shaft controls the stroke of the pump and the volume of fluid dispensed. Different volumes of solder can be dispensed to different areas and shapes of pads on a circuit board in accordance with preprogrammed dispensing commands.
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Caramiciu Marius A.
Dency George G.
Dawson Walter F.
Pomrening Anthoula
Raytheon Company
Sharkansky Richard M.
Shaver Kevin P.
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