05270211 is referenced by 20 patents and cites 19 patents.

A sample tube entry port for an automatic chemical analyzer supports individual draw tubes that are manually delivered to the analyzer at a sample access station. The entry port facilitates removal of samples by the pipette without exposing operating personnel to accidental contact with liquid materials in the draw tube. To accommodate draw tubes of differing heights, the apparatus includes a stripper that is selectively locked onto an elevationally movable ram carrying a receptacle for receiving a draw tube. A spring-biased tube clamp urges each draw tube against guides within the receptacle to center draw tubes of differing diameters. During operation of the apparatus, the receptacle is first lowered to a predetermined elevation, then raised to an intermediate elevation at which a draw tube closure is properly positioned for placement of the stripper immediately adjacent to its upper surface. The stripper is locked relative to the ram in this elevational relationship, which is maintained as the closure is impaled on the puncture tube and/or the pipette that accesses the contents of the draw tube.

Title
Sample tube entry port for a chemical analyzer
Application Number
7/916222
Publication Number
5270211
Application Date
July 16, 1992
Publication Date
December 14, 1993
Inventor
Bruce Weyrauch
Newman Lake
WA, US
Kelsey Loughlin
Spokane
WA, US
Norman Kelln
Spokane
WA, US
Agent
Wells St John Roberts Gregory & Matkin
Assignee
Schiapparelli Biosystems
NJ, US
IPC
G01N 1/00
G01N 21/00
G01N 35/00
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