Patent ID: 8691066

Claim:
A current collector and a seal combination for an electrochemical sensor comprising: a housing, a relatively flat reference, sensing, and counter electrodes within the housing, the relatively flat reference, sensing and counter electrodes are stacked vertically and centered about a common vertical axis and in contact with a liquid electrolyte; a plurality of connection apertures arranged in a horizontal row extending along a wall of the housing directly adjacent corresponding edges of the reference, sensing and counter electrodes, the current collector and seal combination further comprising: a plurality of relatively straight, flexible, metal current collectors, each of the plurality of current collectors extending through a respective connection aperture of the plurality of connection apertures to the vertically stacked reference, sensing and counter electrodes with an end of each current collector trapped against and in direct contact with the reference, sensing and counter electrodes; a compliant seal of a thermoplastic elastomeric material over-molded directly onto each of the flexible metal current collectors, the compliant seal is inserted into one of the connection apertures, the current collector extending through the compliant seal; the compliant seal being in contact with the current collector substantially throughout its length along the current collector; and an arrangement being such that compressive stress induced in the compliant seal by reaction from the connection aperture urges the compliant seal into distributed sealing contact with the current collector substantially through a length of the compliant seal.