Air flow sensor and optional device that is for electrical machine and that includes the air flow sensor
US9946222B2 · kind B2 · utility
1Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2016 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | Nov 12, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/206
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An air flow sensor includes a case, a to-be-detected object, and a detector. The case includes an intake port and an exit port through which air is to flow. The to-be-detected object is located at a first position in the case when the air flowing from the intake port to the exit port has lower than a predetermined level of pressure, and is movable from the first position receiving the air when the air has equal to or higher than the predetermined level of pressure. The detector is disposed outside the case and is configured to detect a movement of the to-be-detected object and output an electrical signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.