Precision dispensing pump for viscous materials

Details Precision dispensing pump for viscous materials Precision dispensing pump for viscous materials

1994-08-22

1996-10-15

Kashnikow, Andres

Dispensing

With discharge assistant

Plural

222413, G01F 1120

Patent

active

055646069

ABSTRACT:
A viscous fluid dispensing pump such as used on the mechanical arms of computer controlled dispensing systems introduces the fluid into the center of a vertical bore having a dispensing tube at the bottom and a variable pitch thread feed screw in the bore rotated by a precision servo motor. An alternate embodiment describes a conical shaped feed screw with linear pitch turning in a conical shaped sleeve in the bore. In both embodiments, the viscous material is homogenized with gas and low viscosity particles and the servo motor accurately controls the amount of deposition.

REFERENCES:
patent: 1746604 (1930-02-01), Piquerez
patent: 3118184 (1964-01-01), Stevenson
patent: 4387834 (1983-06-01), Bishop
patent: 4572103 (1986-02-01), Engel
patent: 5244123 (1993-02-01), Benedict
patent: 5265773 (1993-11-01), Harada

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