Systems and methods for indicating a quantity
US10671022B2 · kind B2 · utility
0Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2015 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Apr 25, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G9/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An indication device is provided which has an electrically conductive fluid driven by an MHD pump. The fluid has an indicator surface driven adjacent indices of an indicator so as to indicate a quantity. A position of the indicator surface is sensed and controlled to ensure accurate indication of the quantity. Optionally, the quantity indicated is time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.