Electrical resistors – Resistance value responsive to a condition – Gas – vapor – or moisture absorbing or collecting
Patent
1975-09-02
1977-01-04
Albritton, C. L.
Electrical resistors
Resistance value responsive to a condition
Gas, vapor, or moisture absorbing or collecting
23254E, 73 27R, 338229, H01L 700
Patent
active
040017583
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 two-part ceramic insert member for support of a wafer of variable resistance sensor material. The ceramic insert member is comprised of a first portion having a slotted tip for receipt and support of the wafer of partial pressure of oxygen responsive ceramic sensor material. The ceramic insert member is arranged to position the wafer within a perforated shield member at 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 ceramic insert member. The extending leads are electrically connected, proximate to the interface of the two-part ceramic insert member, to a pair of relatively flexible, electrically low resistance, high temperature resistant extending lead wires which are received within the second portion of the ceramic insert member.
REFERENCES:
patent: 3911386 (1975-10-01), Beaudoin
patent: 3933028 (1976-01-01), Laud et al.
patent: 3959765 (1976-05-01), Stewart
Esper Michael J.
Green Wells L.
Merchant Stanley R.
Wells Charles M.
Albritton C. L.
Benziger Robert A.
Ford Motor Company
Zerschling Keith L.
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