Fluid flow detection device
US8590562B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2010 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | Dec 13, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8326
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluid flow detection device includes a housing of non-magnetic metal, a flow passage through the housing and a valve seat in the flow passage. A magnetic valve element emits a magnetic field. The valve element is movable relative to the valve seat between a closed position blocking fluid flow through the flow passage and an open position allowing fluid flow through the flow passage. The magnetic valve element is biased toward the closed position. A magnetic field enhancer is movable with the magnetic valve element for enhancing the magnetic field. A magnetic field sensor on the housing is operable to signal a change in position of the valve element as it moves between its open and closed positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.