Pumps – Condition responsive control of pump drive motor – Responsive to change in rate of pump fluid flow
Reexamination Certificate
2006-10-31
2006-10-31
Kim, Tae Jun (Department: 3746)
Pumps
Condition responsive control of pump drive motor
Responsive to change in rate of pump fluid flow
C417S053000, C137S086000, C137S086000, C137S086000, C137S038000, C137S039000, C137S086000
Reexamination Certificate
active
07128539
ABSTRACT:
Improved method for cleaning a pump, fluid hose, and spray gun is provided by, for example, repeatedly changing the flow rate of the cleaning fluid pumped through the system to generate turbulence or increased turbulence and increased frictional resistance for enhanced cleaning action. A pressure control can cyclically vary the speed of the pump motor and pump connected thereto to generate the turbulence. The pumping cycle can alternate between a first and second power level and at a desired time interval for each speed. With a suitable solvent as the pumped fluid, the turbulence that is generated by the cyclical pumping action causes an increase in the scrubbing action of the solvent to quickly loosen residual material in the fluid passageways.
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Anderson Troy Allen
Kieffer Joseph W.
Veres Sandor Peter
Katten Muchin & Rosenman LLP
Kim Tae Jun
Sayoc Emmanuel
Titan Tool, Inc
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