Methods and apparatus for breath alcohol testing

Details Methods and apparatus for breath alcohol testing Methods and apparatus for breath alcohol testing

H - Electricity

01

M

H01M 8/00 (2006.01) H01M 2/00 (2006.01) H01M 2/08 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2538604

A fuel cell assembly (102) includes a fuel cell (104), a fuel cell housing (106, 108) and a diaphragm (170). The fuel cell housing includes an endwall and an inlet port (122) extending through said endwall. The inlet port is for admitting a breath sample into the housing. The diaphragm is coupled within the housing such that a cavity (110) is defined between the housing and the diaphragm. The fuel cell is positioned within the cavity and is substantially concentrically aligned with respect to the inlet port.

Selon la présente invention, un ensemble de pile à combustible (102) comprend une pile à combustible (104), un logement de pile à combustible (106, 108) et un diaphragme (170). Ledit logement de pile à combustible comporte une paroi d'extrémité et un orifice d'entrée (122) s'étendant à travers ladite paroi d'extrémité. Cet orifice d'entrée est conçu pour laisser entrer un échantillon d'haleine dans ledit logement. Le diaphragme est couplé au sein du logement, de telle manière qu'une cavité (110) est formée entre le logement et le diaphragme. La pile à combustible est placée à l'intérieur de la cavité et elle est pratiquement alignée de manière concentrique à l'orifice d'entrée.

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