Needle valve and connectors for use in liquid transfer apparatuses
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United States of America Patent
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Jun 19, 2018
Issued Date -
Mar 3, 2016
app pub date -
Mar 25, 2014
filing date -
May 9, 2013
priority date (Note) -
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Abstract
The invention is a needle valve and connectors for use in liquid transfer apparatuses. The needle valve of the invention is not the conventional type of needle valve known in the art that comprises a threaded valve stem, which allows very accurate control of the flow through the valve, and that uses elastic materials, such as rubber, as a sealing component. The needle valve of the invention comprises two components: the first component is a hollow needle having a smooth exterior surface and a port at the side of the cylindrical shaft, the second component is a seat made of rigid material e.g. plastic with low friction properties.
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