Fluid sprinkling – spraying – and diffusing – Combining of separately supplied fluids – At or beyond outlet
Reexamination Certificate
2005-02-01
2005-02-01
Ganey, Steven J. (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Combining of separately supplied fluids
At or beyond outlet
C239S071000, C239S340000, C239S346000, C239S418000, C239S403000, C239S590500, C239S423000, C422S105000, C422S922000, C073S864110, C073S864250, C073S864810, C901S016000, C901S046000
Reexamination Certificate
active
06848633
ABSTRACT:
In an aspirating and dispensing/spraying device, a holder is screwed onto a tube, connected to a liquid supply line, in such a way that it is displaceable along the tube by rotation. The tube is surrounded at a distance by a coaxial sleeve, which is solidly anchored in the holder, having a discharge opening on its front end, which is conically narrowed, whose edge surrounds the front end of the tube, which carries a outlet opening, separated by a narrow annular gap from the tube. The sleeve carries a connecting piece laterally, to which a pressurized gas supply line is connected and which discharges eccentrically into the space between the sleeve and the tube, so that pressurized gas flowing in receives angular momentum. When the gas flows out of the annular gap, it mixes intensively with the liquid coming out of the outlet opening and forms a discharge cone made of a fine, symmetrical aerosol with the liquid. This aspirating and dispensing/spraying device is simultaneously implemented as a pipette for aspirating liquids through the outlet opening of the tube's front end, said tube carrying a sensor near said outlet opening for detecting a liquid surface during pipetting.
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Ganey Steven J.
Notaro & Michalos P.C.
Tecan Trading AG
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