Shear beam weigh axle transducer
US4694921A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 20, 1986 |
| Grant date | Sep 22, 1987 |
| Priority date | — |
| Expiry date | Oct 20, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G3/1408
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A weigh axle transducer for a grain cart or other application in which side loads are applied. A spindle which mounts the cart on a wheel is provided with opposing side openings which form an I-shaped section of the spindle. Strain gauges are mounted on opposite sides of the web of the I section and are wired in a bridge circuit providing an output signal proportional to the shear strain on the web. Each opening has an undercut configuration which enhances the output signal due to the large diameter undercut area and which provides adequate strength against lateral loads due to the smaller diameter portion. Apertures through the web provide wiring passages and act as stress risers to enhance the signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.