Glass sampling tube
AssigneeUop LLC
InventorsFrederick J. Riedl, George A. Schimmelpfennig
Life of this patent
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Abstract
Glass sampling tube for collecting and storing gas samples has tapered ground glass joints at either end of a tubular storage chamber for permitting selective communication between axially extending inlet tube portions on the ends of the device and the storage chamber. The joints are protected against breakage by being entirely within the tubular storage chamber but include manually actuable external handle portions which are positioned integrally with and intermediate the inlet tube portions and the joints.
Claims8
In a glass gas sampling tube comprising a tubular body portion having an axially positioned inlet tube portion at each end and sealable joint means at each end for selectively sealing said inlet tubes from the interior of said body portion, the improvement comprising said joint means being formed of axially extending tapered male inner and female outer glass wall portions which are positioned in cooperating relationship within the body portion and radially spaced from the walls of said body portion, said inner portion having a first opening in its wall portion in open communication with said inlet tube portion, said outer portion having a second opening in its wall portion, and manually actuated handle portions integral with said inner portion for selectively rotating said inner portion in said outer portion for moving said first opening into or out of communication with said second opening.
Dependencies are inferred from the claim text.