Hail sensor
US4904894A · kind A · utility
12Cited by
15References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1989 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Jan 24, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S310/80
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A hail sensor is disclosed which contains a piezoelectric transducer positioned to produce an output signal when it is vibrated by a hailstone. In one embodiment, the transducer is mounted on a perforated member which is exposed to falling precipitation. In an alternative embodiment, the hailstone impacts a rebound surface and is deflected toward the transducer where an electrical output is produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.