Pressure sensor
US5693886A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 24, 1996 |
| Grant date | Dec 2, 1997 |
| Priority date | — |
| Expiry date | Jul 24, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L1/142
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pressure sensor, having a simple structure for accurately measuring any one of pressure and weight, is provided. The pressure sensor includes a pair of electrode layers and a dielectric layer. The dielectric layer is composed of a rubber elastic body positioned between the pair of electrode layers to act as a spacer for the pair of electrode layers. The dielectric layer has a tan .delta., at 1 to 30 Hz at a temperature of 10.degree. C. to 30.degree. C., of 0.03 or less. The dielectric layer also has a rubber hardness of 20 to 80 degrees in terms of scale A according to JIS-K-6301 at 10.degree. C. to 30.degree. C. Further, the dielectric layer has an impact resilience of 75% or more measured according to JIS-K-6301 at 10.degree. C. to 30.degree. C. and a compression set of 3% or less measured according to JIS-K-6301 at 10.degree. C. to 30.degree. C. The dielectric layer is formed of any one of natural rubber, polybutadiene rubber, polyisoprene rubber, polyurethane rubber and silicone rubber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.