Sensing element for determining a physical property of a gas mixture
US7124622B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2004 |
| Grant date | Oct 24, 2006 |
| Priority date | — |
| Expiry date | Oct 4, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D11/245
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensing element for determining a physical property of a gas mixture, in particular the exhaust gas of internal combustion engines, includes a sensor element, arranged in a housing and connected to at least one electrical cable, as well as a molded piece, which seals the housing and is made of an elastically deformable material, which encloses the at least one cable in a gas-tight manner by radial compression. To ensure the gas-tightness of the cable feed-through also under a higher temperature load, which results in decreased elasticity of the molded piece, a spring element is arranged inside the molded piece, which is able to be tensioned by the radial compression and in the tensioned state generates a force component that acts on the cables in a radial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.