Load cell unit
US5723826A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1995 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | Jul 3, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G3/147
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A load cell unit in accordance with the present invention comprises a load cell and a wiring board. The load cell comprises a flexible member provided with a through hole formed between the fixed end and the moving end thereof so as to form four flexible portions, and strain gages attached to the flexible portions, respectively. The wiring board is provided with a circuit connected to the strain gages of the load cell so as to form a bridge circuit including the strain gages, and a processing circuit connected to the bridge circuit. The wiring board has a first major surface mounted with at least film capacitors among the circuit elements of the processing circuit, and a second major surface. A first shield cover is attached to the first major surface of the wiring board so as to cover the circuit elements mounted on the first major surface, and a second shield cover is attached to the second major surface of the wiring board so as to cover the circuit elements mounted on the second major surface of the wiring board. The wiring board is disposed beside the load cell with the first shield cover disposed in the through hole of the load cell. The wiring board of the load cell unit is …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.