Sample injection means

• US 4,879,915 A
• Filed: 12/20/1988
• Issued: 11/14/1989
• Est. Priority Date: 03/17/1987
• Status: Expired due to Term

• Current Assignee: Spencer R. Wilson
• Original Assignee: Spencer R. Wilson
• Inventors: Spencer, R. Wilson
• Primary Examiner(s): Noland, Tom
• Application Number:
  US07/287,344
• Time in Patent Office: 329 Days
• Field of Search: 73/863, 73/863.41, 73/863.51, 73/863.52, 73/863.61, 73/863.86, 73/864, 73/864.01, 73/864.51, 73/864.63, 73/864.73 , 73/864.74, 141/19, 141/285, 141/289, 141/301, 141/310, 141/329, 141/330, 422/102, 422/103, 422/104
• US Class Current: 73/864.74
• CPC Class Codes: G01N 1/2035 by deviating part of a fluid stream, e.g. by drawing-off or tapping
• CPC Class Codes: G01N 2001/2064 using a by-pass loop

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.

Claims

1. A sample injection means, comprising a single vented needle having a 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 through said body and communicating between the exterior of said body above said shaft and the exterior of said shaft, and a vent passageway, running through said body and communicating between the exterior of said body above said shaft and the exterior of said shaft, when in use said upper end being connected to a valve and said lower end being connected to a receptacle for receiving samples.