The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 2010
Filed:
Jan. 26, 2007
Applicant:
Dale A. Davison, Greenwood, NE (US);
Inventor:
Dale A. Davison, Greenwood, NE (US);
Assignee:
Teledyne Isco, Inc., Lincoln, NE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 30/20 (2006.01); F16K 11/085 (2006.01);
U.S. Cl.
CPC ...
Abstract
A sample injector includes a rotary valve element with a straight passageway through it, which element may be rotated to connect a port communicating with a source of solvent with a port communicating with an inlet to a column. Another passageway connects two adjacent ports. The valve element may be rotated to one position in which it provides a straight path for sample to be injected, a second position in which it provides a path that connects a source of purge gas to the chromatographic system and a third position in which it provides a path that connects solvent to the column for preconditioning.