Sample injection means
OwnerR. Wilson Spencerinventor
Life of this patent
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Abstract
A sample injection device is provided, comprising a vented needle having a body, the body having an upper end and a lower end, a point on the lower end, an injection passageway running axially through the body and communicating between the upper end and the lower end, and a vent passageway, running through the body and communicating between the lower end and the exterior of the body. The upper end of the body is connectable to a valve, and the lower end is connectable to a receptacle for receiving samples.
Claims8
A sample injection means, comprising a single vented needle having a unitary body, said body having an upper end and a lower end, a needle shaft extending from said lower end, said shaft having a tip thereon, an injection passageway running axially through said body and communicating between the exterior of said upper end and the exterior of said tip, and a vent passageway, running through said body and communicating between an endpoint located on the exterior of said tip and the exterior of said body above said endpoint and below the exterior of said upper end, when in use said upper end being connected to a valve and said lower end being connected to a receptacle for receiving samples.
Dependencies are inferred from the claim text.