Emergency locating device
US3941079A · kind A · utility
Inventor
Key dates
| Filing date | Nov 18, 1974 |
| Grant date | Mar 2, 1976 |
| Priority date | — |
| Expiry date | Nov 18, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S116/09
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A visual locating device for use as an aid in finding lost persons, wherein the device comprises a high-pressure cylinder having a lighter-than-air gas stored therein, and a valve means to control the flow of gas therefrom and into an inflatable balloon. Attached to the balloon is a second valve means wherein a portion of the gas cylinder is operably engaged therein to allow gas to flow into the balloon for inflation -- and, conversely, preventing gas once contained therein from flowing out of the balloon when released. A rotatable cylindrical reel is operably attached and supported by the gas cylinder, the reel forming a spool having a tether line disposed thereon and attached to the balloon, thus allowing the balloon to ascend to the predetermined length of the line, the balloon having a prominent color so as to be easily located. A radar reflective means is also secured to the tether line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.