Hand-rotatable plug valve with motorized longitudinally-movable gate rotating for use as a stopcock with laboratory glassware in chemical laboratory automation and other applications

A hand-rotatable motorized-aperture plug arrangement for use as a stopcock in articles of traditional and legacy laboratory glassware of arbitrary complexity. The hand-rotatable plug additionally comprises a longitudinally-movable gate whose gate position is changed by a stepper or D.C. electrical m...

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Bibliographische Detailangaben
1. Verfasser:	Ludwig, Lester F
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BLASTING CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL TAPS THERMAL INSULATION IN GENERAL TRANSPORTING VALVES WEAPONS
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Beschreibung
Zusammenfassung:	A hand-rotatable motorized-aperture plug arrangement for use as a stopcock in articles of traditional and legacy laboratory glassware of arbitrary complexity. The hand-rotatable plug additionally comprises a longitudinally-movable gate whose gate position is changed by a stepper or D.C. electrical motor. As the gate position is changed, the amount of flow can be varied. Hand-rotation operation of the plug itself can be used to force flow turn-off. The gate position can be monitored by a sensor and can be computer-controlled for use with an article of laboratory glassware for controlling and/or directing the flow of chemical materials.