Russell T Barker

US Patent:

6354345, Mar 12, 2002

Filed:

Jun 28, 1999

Appl. No.:

09/340882

Inventors:

Frederick Alan Nabity - Lincoln NE
Robert Raymond Fiedler - Lincoln NE
James Paul Masek - Lincoln NE
Brian D. Dawson - Lincoln NE
Russell Todd Barker - Lincoln NE
Ralph E. Setter - Lincoln NE
Paul George Wright - Garland NE
Larry Lee Fritz - Lincoln NE

Assignee:

Isco, Inc. - Lincoln NE

International Classification:

B65B 300

US Classification:

141284, 141130

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.

US Patent:

55765033, Nov 19, 1996

Filed:

Feb 13, 1995

Appl. No.:

8/387595

Inventors:

Frederick A. Nabity - Lincoln NE
Robert R. Fiedler - Lincoln NE
James P. Masek - Lincoln NE
Brian D. Dawson - Lincoln NE
Russell T. Barker - Lincoln NE
Frederick D. Sueverkruepp - Lincoln NE
Ralph E. Setter - Lincoln NE
Paul G. Wright - Pleasant Dale NE
Larry L. Fritz - Lincoln NE

Assignee:

Isco, Inc. - Lincoln NE

International Classification:

G01N 114

US Classification:

7386301

Abstract:

To select a designated bottle in a sampler, the distributor is calibrated as to position and the outlet of the distributor arm is moved over the desired bottle by counting changes in incremental angular movement of the distributor arm until it is over the bottle. The position of the distributor arm is recorded in memory. To calibrate the distributor, the arm is rotated against a stop member in a first direction, then in a second direction and the overrun of in excess of 360 degrees of the motion of the distributor arm is determined and corrected. A series of random numbers is generated for depositing of samples, the distributor is moved at designated times over the bottles in a random order to deposit a sample and the ordering of bottles is recorded. The rollers of a peristaltic pump are supported to prevent said rollers from compressing said tube more than the thickness of the walls of the tube. A functional module for a bubbler or pH probe or ultrasonic level detector may be connected to the housing.

US Patent:

59159324, Jun 29, 1999

Filed:

Feb 6, 1996

Appl. No.:

8/597284

Inventors:

Frederick Alan Nabity - Lincoln NE
Robert Raymond Fiedler - Lincoln NE
James Paul Masek - Lincoln NE
Brian D. Dawson - Lincoln NE
Russell Todd Barker - Lincoln NE
Frederick Detlef Sueverkruepp - Lincoln NE
Ralph E. Setter - Lincoln NE
Paul George Wright - Garland NE
Larry Lee Fritz - Lincoln NE

Assignee:

Isco, Inc. - Lincoln NE

International Classification:

F04B 4308

US Classification:

4174771

Abstract:

The rollers of a peristaltic pump are supported to prevent said rollers from compressing said 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.