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:
Sep. 24, 2002
Filed:
Jan. 07, 1999
Applicant:
Inventors:
Robert W. Dahlgren, Bartlesville, OK (US);
Robert K. Bade, Bartlesville, OK (US);
Stephen B. Hunt, Bartlesville, OK (US);
Assignee:
Siemens Energy & Automation, Alpharetta, GA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 3/004 ; F16K 7/00 ;
U.S. Cl.
CPC ...
G01N 3/004 ; F16K 7/00 ;
Abstract
A multiport, diaphragm sealed valve suitable for use as both a sampling and column switching valve. The valve is constructed to internally block fluid communication between one or more pairs of ports in a valve operating mode. Such blocking may be used to conserve carrier gas when the valve is in the ON position.