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US 4,379,741 AGranted
Oxygen concentration sensor
AssigneeNippondenso Co., Ltd.
InventorsHiromi Sano, Masatoshi Suzuki
Life of this patent
Estimating the term…
Abstract
An oxygen concentration sensor is provided for sensing a concentration of oxygen in a sensing gas, in which a solid reference material acting as a solid pole is housed within a container on the inner surface of which an electrode is provided. A sealing material having an output terminal is located to seal the entrance of the container so as to electrically connect the inner surface electrode to the output terminal through the sealing material.
Claims5
An oxygen concentration sensor comprising:
- a generally cup-shaped sensing element of a solid electrolyte member having an open end and a closed end;
- first and second electrodes provided on the inner and outer surfaces of said sensing element;
- a solid rod made of solid reference material having a reference oxygen partial pressure characteristic and disposed on the closed end of said sensing element;
- an electrically conductive sealing material element located at the upper portion of said sensing element adjacent to the open end of said sensing element, said sealing material element being a melted and solidified mixture of metal powder and glass powder;
- and
- a metal terminal supported by and partially embedded into said sealing material element to electrically connect said first electrode with said terminal through said sealing material element.
3 more elements
Dependencies are inferred from the claim text.