Device with liquid flow restriction
US11071327B2 · kind B2 · utility
3Cited by
0References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2017 |
| Grant date | Jul 27, 2021 |
| Priority date | — |
| Expiry date | Jul 15, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24F40/10
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A device for controlling electrical power supply in response to air pressure measurement includes an airflow path, a chamber having an aperture, a liquid flow restrictor configured to inhibit ingress of liquid into the chamber via the aperture, a pressure sensor located in the chamber and operable to detect, in the presence of the liquid flow restrictor, air pressure changes caused by air flow in the airflow path, and a circuit for converting air pressure changes detected by the pressure sensor to control signals for controlling output of power from a battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.