Physical quantity measurement device having a stepped portion to prevent particles from entering the measurement flow channel
US11002617B2 · kind B2 · utility
1Cited by
5References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 7, 2019 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Oct 7, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2400/0406
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A physical quantity measurement device that measures a physical quantity of a fluid has an inflow port and an outflow port, and includes a passage flow channel, a branch flow channel, and a physical quantity detector. An inner peripheral surface of the passage flow channel extends over a pair of facing surfaces, which face each other across the flow passage boundary portion and the inflow port on an upstream side of the flow channel boundary portion. The inner peripheral surface further includes an inflow step surface which forms a step facing the inflow port side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.