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. 17, 2009
Filed:
Oct. 04, 2006
Applicants:
Mark Julian Gunning, Tadworth, GB;
Graham Poulter, Orpington, GB;
Inventors:
Mark Julian Gunning, Tadworth, GB;
Graham Poulter, Orpington, GB;
Assignee:
Smiths Group PLC, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 3/14 (2006.01); G01N 21/49 (2006.01);
U.S. Cl.
CPC ...
Abstract
An infra-red liquid sampling cell has a sapphire base plate with a part-spherical concave recess. A sapphire upper plate is hinged relative to the base plate larger radius of curvature than the recess. When the upper plate is lowered into contact with the base plate its convex surface contacts the liquid sample thereby excluding air bubbles and, when in contact with the edge of the recess, produces a well-defined sample thickness. An infra-red source directs radiation down through both plates and the liquid sample to a detector.