Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1985-05-07
1986-02-11
Kaplan, G. L.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204427, 204428, G01N 2758
Patent
active
045697485
ABSTRACT:
An oxygen sensor according to the present invention comprises a tumbler-shaped solid electrolytic element formed of an oxygen-ion-conductive metal oxide. A first electrode and a lead electrically connected thereto are formed on the outer peripheral surface of the element which is exposed to exhaust gas. A second electrode is fixed to the inner peripheral surface of the element which is exposed to the atmosphere. The element is held by a ring-shaped metallic holder. The holder and the first electrode are electrically insulated from each other. A conductive metallic pipe member is disposed between the element and the holder. One end of the pipe member is electrically connected to the lead by means of a conductive metal ring. A partition wall extends integrally from one end of the pipe member, defining between its inner surface and the other peripheral surface of the element a space for housing the conductive metal ring between the pipe member and the lead. A seal member is interposed between the outer peripheral surfaces of the pipe member and the partition wall and the inner peripheral surface of the holder. The seal member is formed by compacting a powdered electrial insulating material.
REFERENCES:
patent: 447940 (1982-12-01), Fujimoto et al.
patent: 4076608 (1978-02-01), Fujishiro et al.
patent: 4141813 (1979-02-01), Kita et al.
patent: 4189355 (1980-02-01), Fujishiro et al.
Akatsuka Takao
Ishibashi Takao
Kawaguchi Masao
Nakano Jiro
Yamakawa Michihiro
Kaplan G. L.
Nippondenso Co. Ltd.
Toyota Jidosha & Kabushiki Kaisha
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