Shear beam load cell and method for making it
US6172309A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 6, 2000 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | Apr 6, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L1/2243
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The cost of machining a shear beam load cell can be greatly reduced by cutting pockets for the central web with a side cutting tool, such as a Woodruff Cutter or a Key Cutter tool, in a vertical spindle milling machine, so all machining can be done with one single setup. The thickness of a web formed by side cutting tools will increase slowly and gradually with distance from the center of the web, which means that there will be no abrupt shear stress changes near the strain gages. The disclosed shear beam load cell is accordingly not only less expensive to make, but also inherently more accurate than prior art shear beam load cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.