Fluid level sensor, fluid reserviour, and methods for sensing a fluid level
US11366001B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 8, 2019 |
| Grant date | Jun 21, 2022 |
| Priority date | — |
| Expiry date | Aug 2, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H36/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Herein provided is a fluid level sensor and associated systems and methods. The fluid level sensor comprises a floater movable along a floater path in response to changes in a fluid level and a sensing circuit disposed along the floater path. The floater path has a first end associated with a low fluid level and an opposite second end associated with a high fluid level. The sensing circuit comprises first and second electrically-coupled circuit branches with first and second sensing terminals arranged proximate to the first end of the floater path, a plurality of passive elements connected in series along the first circuit branch, and plurality of switching elements each connected in parallel between the second circuit branch and the first circuit branch at connection points along the first circuit branch between pairs of adjacent passive elements, the switching elements configured for being actuated by movement of the floater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.