Patent · US Active

Reagent addition system and method

US7357899B2 · kind B2 · utility

20Cited by

16References

4Claims

0Family size

Assignee

Oyster Bay Pump Works, Inc. · US

Inventors

Patrick Gaillard · Bayville, US
Peter M. Kurzyna · Glenmoore, US
Drasko Vukicevic · Oyster Bay, US

Key dates

Filing date	Oct 10, 2006
Grant date	Apr 15, 2008
Priority date	—
Expiry date	Oct 10, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T436/2575
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A piston coupling for a micro-liter range liquid dispensing system for connecting a piston to a piston drive shaft generally includes a U-shaped body portion having a U-shaped arm and an annular barrel-shaped bearing seated in the U-shaped body portion and retained by the U-shaped arm. The bearing includes an axial bore for receiving the piston, wherein the annular barrel-shaped bearing is designed for balancing the forces applied to the piston by the piston drive shaft symmetrically about the centerline of the piston.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.