Oxygen sensor for detecting the oxygen content of an internal co

Electrical resistors – Resistance value responsive to a condition – Gas – vapor – or moisture absorbing or collecting

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73 27R, H01L 700

Patent

active

043778011

ABSTRACT:
An oxygen sensor (1) for detecting the oxygen content of an internal combustion engine exhaust gas system includes a generally cylindrical hollow insulator (3) having a first resistive element (17), preferably of titania, and a second resistive element (19) preferably of zirconia or chromia, adjacent the closed end (9) thereof, grooves (23) adjacent the open end (7) thereof, and an intermediate portion (11) having a shoulder (13), with electrically conductive film leads (29) passing over the surface of the insulator (3) between the resistive elements (17 and 19) and the grooves (23), with a dielectric coating (33) over the conductive film leads (29) in the area of a metal shell (31) to insulate the film leads (29) from the shell (31).

REFERENCES:
patent: 4007435 (1977-02-01), Tien
patent: 4147513 (1979-04-01), Bienkowski et al.
patent: 4225842 (1980-09-01), Schlesselman et al.

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