Let down apparatus
US4487292A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1982 |
| Grant date | Dec 11, 1984 |
| Priority date | — |
| Expiry date | Jun 10, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B1/10
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An apparatus is provided for letting a person down from a substantial height. The invention includes: a rotatably mounted reel for retaining an elongate extension member adapted to be connected to the person to be let down; a brake for reducing the rate of rotation of the reel, the brake including a brake drum and a pair of brake shoes mounted to rotate with the reel; a governor including a pair of radially inwardly articulated flyweights extending between the brake shoes, the articulation permitting the flyweights to be displaced radially outwardly as the rate of rotation of the brake shoes and the reel increase, to displace the brake shoes radially outwardly whereby the pressure of the brake shoes against the brake drum and the resulting brake is increased as the rate of rotation of the reel increases; and a crank mounted to the apparatus for permitting the reel to be rewound onto the reel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.