Magnetic sensor with a chip attached to a lead assembly within a cavity at the sensor's sensing face
US5912556A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1996 |
| Grant date | Jun 15, 1999 |
| Priority date | — |
| Expiry date | Nov 6, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/145
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A geartooth sensor is provided with a carrier shaped to form a cavity in which semiconductor chips can be disposed. The carrier partially encapsulates a permanent magnet and a lead assembly. Unencapsulated portions of the lead assembly are exposed within the cavity to permit semiconductor components to be attached to a portion of the lead assembly. A cover is attached to the carrier to seal the cavity and protect the magnetically sensitive components located therein. The carrier, with its associated lead assembly and permanent magnet, can then be attached to a printed circuit board and a support structure to form a geartooth sensor. A protective enclosure can be disposed over the sensitive components of the geartooth sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.