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. 04, 2003
Filed:
Jul. 29, 2002
Applicant:
Inventors:
Kenneth A. Kuhn, Birmingham, AL (US);
Donald P. Segers, Homewood, AL (US);
Melody L. Thompson, Pelham, AL (US);
Assignee:
O.I. Corporation, College Station, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N 1/00 ;
U.S. Cl.
CPC ...
G01N 1/00 ;
Abstract
An apparatus for controllably varying the sample volume for each of a plurality of sample lines used with air monitoring equipment is disclosed. The sample volume is varied depending on the compound or compounds of interest sampled through each line. The flow volume from each sample line is determined and controlled by proportional time that an electrically actuated valve is open for that sampling line.