Laboratory stopcock valve manifold with arbitrary mapping of flow to rotation angle and provisions for motorized planetary gear control
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United States of America Patent
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Aug 8, 2017
Grant Date -
Apr 6, 2017
app pub date -
Dec 19, 2016
filing date -
Oct 6, 2009
priority date (Note) -
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Abstract
An article of laboratory glassware for directing the flow of chemical materials is described. The article includes a glass manifold having a plurality of input ports and at least one output port, and a plurality of stopcocks. Each stopcock has an inlet port and an outlet port connected by a passageway through the plug. Each of the stopcock output ports is connected to one of the manifold input ports, and each stopcock input port is connected with one end of a hollow glass tube, and the other end of the hollow glass tube is connected to a ground glass joint. The output ports of the manifold are terminated to a ground glass joint. Each plug is rotationally coupled to a planetary gear arrangement operated by a stepper or electrical motor, and rotational position can be sensed by a sensor. The rotation of each rotating plug is controlled by a computer.
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