Weigh-in-motion sensor constructions
US11733085B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 10, 2021 |
| Grant date | Aug 22, 2023 |
| Priority date | — |
| Expiry date | Jul 24, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L1/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Weigh-in-motion sensors comprise a beam including a plate with a load-bearing surface, and a tube portion including a base wall and a cover and defining a cavity therebetween. A sensing package is disposed within the cavity and is under pre-load with the cover and the base wall. The sensing package comprises a piezoelectric element. The base wall includes an aperture extending from a mounting surface to the cavity. The aperture includes a fastener therein to secure the sensing package within the cavity. The fastener is sized having a cross-section dimension taken through a center axis of the fastener that is greater than that of a cross-section dimension of the piezoelectric element taken along the fastener center axis. In an example, the fastener has a cross-section dimension sized about 10 percent or greater in dimension than that of the respective cross-section dimension of the piezoelectric element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.