Meteorological measuring apparatus
US4112753A · kind A · utility
Inventor
Key dates
| Filing date | May 9, 1977 |
| Grant date | Sep 12, 1978 |
| Priority date | — |
| Expiry date | May 9, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01W1/17
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A radiosonde is conformable for use either as a disposable sonde in which the device will ascend vertically to a predetermined altitude and when the balloon from which it is suspended bursts at a maximum altitude the sonde will automatically flip over and autogyrate at a reduced rate of descent back to earth; or may be used as a tethered radiosonde in which it is suspended from a tethered balloon in such a way as to be freely rotatable about a substantially horizontal axis. In either version, the sonde is characterized by a generally helicoidal propeller construction having thermistor-receiving end tips and whereby the propellers will impart sufficient spin or rotation to the sonde as to cause the desired degree of aspiration to provide accurate wet bulb psychometric measurements; and further the propeller construction is such as to permit freefall at a reduced controlled rate of speed without the assistance of a parachute.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.