Emergency descent device
US4018423A · kind A · utility
18Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 16, 1975 |
| Grant date | Apr 19, 1977 |
| Priority date | — |
| Expiry date | Oct 16, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B1/12
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A descent device is provided for emergency descent from tall structures and for lowering objects from high elevations such as a hovering helicopter. The device includes a rotating spool having a cable wound thereon for descent and a rotation-retarding vane member which rotates in a fluid cylinder. An adjustable bypass is provided for the fluid as the vane member rotates therein so that the speed of descent can be adjustably controlled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.