05697409 is referenced by 14 patents and cites 36 patents.

A diluting station and a pipetting station for a machine such as a biological sample testing machine. The diluting station has a rotating shot tube that fills with diluent without the need for priming when the shot tube is in a vertically inclined orientation, and which dispenses the diluent into a receptacle when the shot tube is rotated to a downward orientation. A thimble valve is placed in the shot tube to control the flow of diluent into the valve.

The pipetting station includes a cylindrical housing storing a plurality of straws and a concentric rotating drum that sweeps a straw into a straw withdrawal slot. A tubular tapered transfer pin is inserted into the straw frictional into engagement with the straw. The tubular transfer pin rotates the straw out of the slot into a generally downward orientation towards a receptacle containing a fluid. The pin and straw are lowered so as to place the end of the straw into the fluid. The fluid is withdrawn into the straw by means of vacuum applied to the tubular tapered transfer pin. The pin and straw are then raised out of the fluid. The fluid can then be deposited into a second receptacle that is moved below the straw and transfer pin by lowering the straw into the second receptacle and releasing the vacuum.

Title
Diluting and pipetting stations for sample testing machine
Application Number
8/604461
Publication Number
5697409
Application Date
February 21, 1996
Publication Date
December 16, 1997
Inventor
Raymond O Bear
Granite City
IL, US
Craig Drager
Ballwin
MO, US
Donald Meyer
St. Peters
MO, US
James Clement Bishop
Columbia
MO, US
Agent
McDonnell Boehnen Hulbert & Berghoff
Assignee
bioMerieux Vitek
MO, US
IPC
B65B 1/04
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