Slow descender including fluid and mechanical braking devices
US3946989A · kind A · utility
66Cited by
7References
6Claims
0Family size
Inventor
Key dates
| Filing date | Dec 17, 1974 |
| Grant date | Mar 30, 1976 |
| Priority date | — |
| Expiry date | Dec 17, 1994 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2065/024
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A slow descender includes a rope pulley and a braking apparatus which restricts the rotation speed of the rope pulley. The braking apparatus includes a mechanical braking device containing a centrifugal brake which has centrifugal weights, a V-shaped lining part cooperating with the weights, and a speed multiplying gearing device connecting the rope pulley and the centrifugal friction brake. The slow descender further includes an oil hydraulic braking device of the vane pump type or of the inscribed gear pump type.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.