Fluid-level sensor
US11674840B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2021 |
| Grant date | Jun 13, 2023 |
| Priority date | — |
| Expiry date | Sep 20, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluid-level sensor includes a housing, a substrate supported by the housing and defining an arcuate slot completely though a thickness of the substrate, and electrically conductive traces disposed on a backside of the substrate. A wiper assembly is disposed adjacent to a front side of the substrate and includes an arm pivotal relative to the substrate and a wiper attached to the arm. The wiper has an elongate neck extending through the slot and a head attached to the neck and in contact with the traces to close an electric circuit, wherein the wiper is configured to move along the slot and slide across the traces responsive to pivoting of the arm to vary resistance of the electric circuit to output a fluid-level reading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.