Electrical resistors – Resistance value responsive to a condition – Gas – vapor – or moisture absorbing or collecting
Patent
1975-09-02
1976-05-25
Gill, James J.
Electrical resistors
Resistance value responsive to a condition
Gas, vapor, or moisture absorbing or collecting
H01C 1300
Patent
active
039597652
ABSTRACT:
A stoichiometric air/fuel ratio exhaust gas sensor construction particularly useful with variable resistance partial pressure of oxygen responsive sensor material is disclosed. A generally cylindrical mounting body, formed of corrosion resistant material, is arranged for receipt within the exhaust system of an internal combustion engine and is provided with a ceramic insert member for support of a wafer of variable resistance sensor material. The ceramic insert member is comprised of an extending first portion having a hollow slotted tip for receipt and support of the wafer of partial pressure of oxygen responsive ceramic sensor material. The extending first portion of the ceramic insert member is arranged to position the wafer within, and extending from, a remote free end of the cylindrical housing body. The wafer includes a pair of extending high temperature resistant electrical conductors which are received within bores provided therefor in the extending first portion of the ceramic insert member. The wafer leads are electrically connected by a glass seal material to a pair of electrically low resistance, high temperature resistant relatively rigid connector pins which are received within a pair of passages extending from the rear face of the ceramic insert member and intersecting the wafer conductor passages.
REFERENCES:
patent: 2926520 (1960-03-01), Schmauch
patent: 3911386 (1975-10-01), Beaudoin et al.
Benziger Robert A.
Ford Motor Company
Gill James J.
Zerschling Keith L.
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