Dispensing – Automatic control – Motor control
Patent
1990-01-17
1991-07-02
Huppert, Michael S.
Dispensing
Automatic control
Motor control
222137, 222319, 222333, B67D 508
Patent
active
050279785
ABSTRACT:
A pump/dispenser, ratioing/mixer dispenser apparatus and a method and apparatus for precision vacuum degassed dispensing of work liquids are presented. The pump/dispenser is a positive displacement high precision piston/cylinder constant flush type with a piston smaller than the chamber. The piston is advanced along its stroke in tiny repeatable adjustably programmable steps, the infinitely adjustable precision ratioing programmable mixing being provided when two such pumps are used. The vacuum degassed work liquids dispensing system features the creation and maintenance of a positive absolute pressure on the work liquid(s) when exiting the degassing chamber(s) to the dispensing outlet(s) whether moved along the flow path through the precision dispensing pump(s) or other types of pump(s). Available software and adjustable programmable precision hardware of the system may be provided for use in a widely available personal computer. Further degassing is provided by dispensing in a vacuum.
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Robotics, Inc. sales literature published at least as early as Mar. 3, 1987.
Huppert Michael S.
Huson Gregory L.
Minnesota Mining and Manufacturing Company
Silver Robert D.
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