Resistance type oxygen sensor
US4225842A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1979 |
| Grant date | Sep 30, 1980 |
| Priority date | — |
| Expiry date | Jul 25, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature compensated oxygen sensor has a generally cylindrical first insulator with an axial bore extending therethrough which is counterbored at one end. A second cylindrical insulator is retained in the bore in the first insulator either by a radial inwardly directed flange on the second end of the first insulator or by a radial outwardly directed flange on one end of the second insulator which seats in the counterbore of the first insulator. A titania resistor and a compensating resistor are mounted on the second end of the second insulator by leads extending through longitudinal bores in a second cylindrical insulator and into the counterbore in the first insulator. The leads are connected to terminals which are retained in the counterbore either by a chemical bonding agent or by a third cylindrical insulator through which the terminals extend. The third insulator can be secured either by mechanical means and/or by a chemical bonding agent including a glass preform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.