Patent · US Expired

Gas sensor, in particular a lambda probe, and method for production thereof

US6883363B2 · kind B2 · utility

1Cited by

15References

5Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Helmut Weyl
Hans-Joerg Renz · Echterdingen, DE
Lothar Diehl · Stuttgart, DE
Juergen Karle · Rutesheim, DE

Key dates

Filing date	May 31, 2002
Grant date	Apr 26, 2005
Priority date	—
Expiry date	May 31, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG01N27/4077
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The ceramic sensor body, held inside a housing by a sealing packing, is provided with a circumferential coating of an electrically insulating material in the region of the sealing packing, so that the sensor body remains potential-free with respect to the housing, even when a sealing packing is used that is made of a material having poor electrical insulating qualities. In this manner, a glass putty is used for the sealing packing, which, while having comparatively poor insulating characteristics, provides a good sealing effect at high loading capacity.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.