Patent · US Expired

Silicon oxide contamination shedding sensor

US6693433B2 · kind B2 · utility

1Cited by

4References

13Claims

0Family size

Assignee

Gas Research Institute · US

Inventors

Stephan E. Schmidt · Essen, DE
Kristin Powers Goppel · Shrewsbury, US
Eric J. Carlson · Andover, US

Key dates

Filing date	May 9, 2002
Grant date	Feb 17, 2004
Priority date	—
Expiry date	May 9, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF23D2208/10
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

In a flame ionization sensor type gas combustion control apparatus, the sensor tip, or probe, exposed to the flame is constructed and arranged according to materials and shapes which promote mechanical deformation of the sensor due to thermal expansion and contraction. The mechanical deformation will cause cracks to open in the contaminant layers surrounding the probe, enabling the sensor to perform as intended even though insulative contaminant build up is present.

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