Oxygen sensor

Details Oxygen sensor Oxygen sensor

1995-09-14

1997-10-21

Tung, T.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204427, 204428, G01N 27407

Patent

active

056792263

ABSTRACT:
An oxygen sensor includes a tubular metal shell, a tubular housing having an end attached to the metal shell and another end sealed by a seal member. A solid electrolyte tube is attached to the metal shell and has on inner and outer surfaces thereof electrode layers and lead layers connected to the electrode layers, respectively. A pair of lead wires extend through the seal member between inside and outside of a housing assembly constituted by the metal shell and housing while being sealingly held by the seal member. A pair of metallic leads are disposed inside of the housing assembly for connection between the lead layers and the lead wires, the metallic leads having at one end thereof electrode connecting portions having a spring property, the electrode connecting portions being attached to the inner and outer surfaces of the solid electrolyte tube and held in contact with the lead layers under spring pressure. A stopper is interposed between the seal member and the open end of the solid electrolyte tube so as to obstruct axial movement of the electrode connecting portions of the metallic leads relative to the solid electrolyte tube when the lead wires are pulled outward of the housing assembly.

REFERENCES:
patent: 4370213 (1983-01-01), Oki et al.
patent: 4556475 (1985-12-01), Bayha et al.
patent: 4609454 (1986-09-01), Ziegler
patent: 4923587 (1990-05-01), Nishio et al.
patent: 5049255 (1991-09-01), Wolfe et al.
patent: 5329806 (1994-07-01), McClanahan et al.

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