Coaxial load cell
US4854179A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 1987 |
| Grant date | Aug 8, 1989 |
| Priority date | — |
| Expiry date | Oct 2, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L1/2231
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electrical strain-gaged load cell whose central and peripheral load-transmitting portions are coaxial with one another about an axis of applied loading includes intermediate interconnections formed by several planar-surfaced elongated shear-sensing beam elements whose opposite ends are integral with the coaxial portions and whose directions of elongation are essentially those of chords across the substantially annular spacing between the coaxial portions. Even in cells of small size, the relatively large chordal lengths of the beams, and the relatively sizable access spaces which may be accommodated alongside them, allow for convenient and facile installation of strain gages which will electrically characterize shear strains induced in the beams as they share transmission of the applied loading. Relatively massive end connections by which the beams connect with the coaxial portions are cantilevered radially inwardly and outwardly of the coaxial portions, angularly between the sites of the beams, to provide sturdy supports which will avoid undesirable end effects and, at the same time, will enable overall size and bulk of the cell to be minimized in designs rated for various capa…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.