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:
Mar. 30, 1993
Filed:
Jan. 17, 1992
Paul Sydlowski, Wakefield, MA (US);
Steven West, Hull, MA (US);
Chin-I Shyr, Newton, MA (US);
Christopher McIntre, Newton, MA (US);
Jeffrey S Cohen, Wilmington, MA (US);
James Barbookles, Malden, MA (US);
Loren Somes, Haverhill, MA (US);
Thomas Paquette, Shrewsbury, MA (US);
Laura Brockway, Charlestown, MA (US);
Orion Research, Inc., Boston, MA (US);
Abstract
The present invention comprises an electrochemical metering apparatus that provides for convenient storage and presentation of the analytical electrode, simple assembly, and two calibration modes. The apparatus includes an electrode storage and presentation assembly that permits the user to introduce the electrode into a sample solution while simultaneously observing the meter's output, and store the electrode when not in use. All structural components are intended to fit together with interlocking tabs and windows. A serial port fits within the construction of the main housing without the need for bolts, and battery clips that depend directly from the circuit board obviate the need for wiring connections. The present invention also features two calibration modes. A 'segment addition' mode permits separation of the voltage/concentration curve into individually plotted regions, the number of which depends on the number of reference solutions used in the calibration procedure. The segment corresponding most closely to the measured potential of a sample solution is used to calculate concentration. In an alternative calibration mode, one or more reference solutions are used to establish metered voltage/concentration combinations that are compared with expected, known values. Any discrepancies therebetween furnish a 'noise level' value associated with the apparatus that can be used to more precisely define the orientation of the voltage/concentration curve.