Capacitive load cell with multi-layer dielectric for extended range
US7176390B2 · kind B2 · utility
7Cited by
13References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2005 |
| Grant date | Feb 13, 2007 |
| Priority date | — |
| Expiry date | May 12, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G19/4142
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A capacitive load cell includes upper and lower capacitor plates and an intermediate dielectric comprising two or more layers of compressible material with diverse compressibility characteristics. The most easily compressed dielectric layer provides sensitivity to low occupant weight, while the less easily compressed dielectric layer(s) provide sensitivity to medium and high occupant weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.