05232669 is referenced by 141 patents and cites 10 patents.

A pipette tip for use in automated assay testing systems includes an annular, protruding seal ring on the interior wall of the pipette for engaging a sealing surface on a probe to provide a resilient seal. The pipette tip also includes a positive stop for assuring proper positioning and alignment of the pipette tip on the probe for facilitating mounting of the pipette tip on the probe while minimizing variation in the loading and unloading forces required. Locator surfaces are provided on the exterior of the pipette tip for precisely aligning the pipette tip in the system rack for positioning the pipette tip relative to the probe.

Title
Pipette tip with self-aligning and self-sealing features
Application Number
7/790380
Publication Number
5232669
Application Date
November 8, 1991
Publication Date
August 3, 1993
Inventor
Guillermo P Pardinas
Miami
FL, US
Agent
Frank S Ungemach
Assignee
Abbott Laboratories
IL, US
IPC
B01L 3/02
View Original Source