Oxygen sensor
US5679226A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1995 |
| Grant date | Oct 21, 1997 |
| Priority date | — |
| Expiry date | Sep 14, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/407
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An oxygen sensor includes a tubular metal shell, a tubular housing having an end attached to the metal shell and another end sealed by a seal member. A solid electrolyte tube is attached to the metal shell and has on inner and outer surfaces thereof electrode layers and lead layers connected to the electrode layers, respectively. A pair of lead wires extend through the seal member between inside and outside of a housing assembly constituted by the metal shell and housing while being sealingly held by the seal member. A pair of metallic leads are disposed inside of the housing assembly for connection between the lead layers and the lead wires, the metallic leads having at one end thereof electrode connecting portions having a spring property, the electrode connecting portions being attached to the inner and outer surfaces of the solid electrolyte tube and held in contact with the lead layers under spring pressure. A stopper is interposed between the seal member and the open end of the solid electrolyte tube so as to obstruct axial movement of the electrode connecting portions of the metallic leads relative to the solid electrolyte tube when the lead wires are pulled outward of the h…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.