Mass air flow sensor with stress free sensor element mounting
US6874362B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2003 |
| Grant date | Apr 5, 2005 |
| Priority date | — |
| Expiry date | May 14, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F15/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An air flow sensing apparatus with a plastic housing having at least two leadframes that are embedded in the plastic housing and adapted for the attachment of a sensing element whose major axis is oriented across the leadframes in a first direction such that, during a thermal cycle, the difference in relative movement between the leadframes in the first direction is minimized while the leadframes move substantially synchronously in other two directions; the leadframes being bent in a pattern that is substantially parallel to each other, and arranged in close proximity with each other, with the dimensions spacing apart the leadframes in the pattern being minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.