Compression column load cell with compensation for off center loading errors
US7342185B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 2005 |
| Grant date | Mar 11, 2008 |
| Priority date | — |
| Expiry date | Dec 24, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L1/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Simple and inexpensive electrical compensation for off-axis and off-center loading sensitivity is possible in compression column load cells having a pair of compensation strain gages in series with each of the main strain gages in the load cell. The compensation gages are connected in series with their associated main strain gage. Each set of one main strain gage and two series connected compensation gages form one bridge arm in a strain gage bridge. Two compensation gages meet at each bridge corner, and are shunted by a common trimming resistor. The loading sensitivity compensation works for both conventional fixed axis load cells and Rocker Pin load cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.