Galvanic cell

• US 3,028,317 A
• Filed: 05/28/1959
• Issued: 04/03/1962
• Est. Priority Date: 05/28/1959
• Status: Expired due to Term

• Current Assignee: Jan W. Haagen-Smit, Malbone W. Greene, Ray I. Wilson
• Original Assignee: Jan W. Haagen-Smit, Malbone W. Greene, Ray I. Wilson
• Inventors: Wilson, Ray I., Greene, Malbone W., Haagen-smit, Jan W.
• Application Number:
  US03/816,456
• Time in Patent Office: 1,041 Days
• US Class Current: 205/779.5
• CPC Class Codes: G01N 27/404 Cells with anode, cathode and cell electrolyte on the same side of a permeable membrane which separates them from the sample fluid , e.g. Clark-type oxygen sensors

Claims

1. IN A GALVANIC CELL FOR ANALYSIS OF A STREAM OF GAS MIXTURE FOR A SPECIFIC GAS THEREIN, THE COMBINATION OF:

FIRST AND SECOND ELECTRODES;

A CONTAINER INCLUDING MEANS FOR SUPPORTING SAID ELECTRODES THEREIN WITH AT LEAST A PORTION OF SAID FIRST ELECTRODE THEREIN WITH AT LEAST A PORTION OF SAID FIRST ELECTRODE OUT OF SAID POOL;

MEANS FOR PASSING A STREAM OF GAS SAMPLE THROUGH SAID CONTAINER WITH SAID STREAM PASSING OVER SAID PORTION OF SAID FIRST ELECTRODE;

MEANS FOR CIRCULATING SAID ELECTRODES OVER SUBSTANTIALLY THE ENTIRE EXPOSED SURFACE OF SAID PORTION OF SAID FIRST ELECTRODE TO MAINTAIN A MOVING FILM OF ELECTROLYTE THEREON PREVENTING DIRECT CONTACT OF THE GAS SAMPLE WITH SAID ELECTRODE WHILE PERMITTING DIFFUSION OF GAS THROUGH SAID FILM TO THE SURFACE OF SAID PORTION;

MEANS FROM PROVIDING AN ELECTROLYTE BRIDGE BETWEEN SAID ELECTRODES, WITH SAID FIRST ELECTRODE NOT BEING REACTABLE WITH SAID ELECTROLYTE AT ANY TIME AND WITH SAID SECOND ELECTRODE BEING REACTABLE ONLY WHEN A SPECIFIC GAS IS PRESENT AT SAID FIRST ELECTRODE;

AND A PAIR OF CONDUCTORS FOR CONNECTING A CURRENT-MEASURIND DEVICE ACROSS SAID ELECTODES FOR MEASURING THE MAGNITUDE OF CURRENT CONDUCTION THEREBETWEEN WHEN SAID SPECIFIC GAS IS PRESENT IN SAID SAMPLE.