Indication device
US11042121B2 · kind B2 · utility
2Cited by
10References
84Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2016 |
| Grant date | Jun 22, 2021 |
| Priority date | — |
| Expiry date | Apr 7, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04F13/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An indication device is provided. The indication device includes an elongated fluid chamber containing at least one electrically conductive liquid driven by a pump for conductive liquids and an immiscible, relatively non-conductive fluid. At least one segment of at least one fluid is used as an indicator. This segment is driven by the pump along adjacent indices of an indicator visible to an observer using a meniscus location sensor and a feedback controller so as to e.g indicate a quantity to the observer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.