APPARATUS FOR ADMINISTERING PARENTERAL LIQUID IN SEQUENTIAL UNITS PROVIDED WITH A BALL VALVE FLOAT

摘要

APPARATUS FOR ADMINISTERINGPARENTERAL LIQUID IN SEQUENTIAL UNITSPROVIDED WITH A BALL VALVE FLOATInventors: John M. Hess IIIHerbert MittlemanABSTRACT OF THE DISCLOSUREA parenteral liquid administering device includesan enlarged, liquid-holding burette-type chamber for re-ceiving measured aliquots of liquid from a source. Theburette has a bottom flow aperture with a valve controllingflow through the aperture. The valve includes a buoyantfloat ball and a valve seat positioned about the bottomflow aperture to receive the ball, in the absence of suf-ficient liquid to float it, in air-tight, sealing relation.Apertured retention means are provided surrounding theball which are proportioned to permit it to float inspaced relation from the valve seat in the presence ofliquid passing through the apertured retention means.