Pumping system

US6354345B1 · kind B1 · utility

Assignee

• Isco, Inc. · US

Inventors

• Frederick A. Nabity · Lincoln, US
• Robert R. Fiedler · Pleasant Dale, US
• James Masek · Otley, US
• Brian D. Dawson · Lincoln, US
• Russell Todd Barker · Lincoln, US
• Frederick Detlef Sueverkruepp, III · Lincoln, US
• Ralph E. Setter · Lincoln, US
• Paul George Wright · Pleasant Dale, US
• Larry Lee Fritz · Lincoln, US

Key dates

• Filing date: Jun 28, 1999
• Grant date: Mar 12, 2002
• Expiry date: Jun 28, 2019

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2035/0491
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

To pump fluid into sample containers, a distributor arm of a sample collector is calibrated as to position in a computer memory and is moved from position to position over different containers while a counter in computer memory keeps track of its position. When the distributor arm is over the designated container, samples are pumped into the container. To pump the fluid into the container, the rollers of a peristaltic pump are supported to prevent the rollers from compressing the tube more than the thickness of the walls of the tube. A tube holder rotates along with the roller assembly of the peristaltic pump and keeps the tube in line with the rollers.