Sensor element and gas sensor
US12298269B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2022 |
| Grant date | May 13, 2025 |
| Priority date | — |
| Expiry date | Nov 24, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/0037
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor element includes an element body that contains a measurement-object gas flow section and a heat generation portion. The measurement-object gas flow section includes a main pump chamber, an auxiliary pump chamber, and a measurement chamber. A distance X1 in a left-right direction between a part of a first inner linear portion and a part of a second inner linear portion of the heat generation portion that overlap a main pump chamber projection region is equal to or more than ⅓ of a width Wp of the main pump chamber projection region in the left-right direction. A distance X2 in the left-right direction between a part of the first inner linear portion and a part of the second inner linear portion that overlap an auxiliary pump chamber projection region is equal to or more than 0.4 times the width Wp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.