Safety device with retractable lifeline
US4877110A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 14, 1988 |
| Grant date | Oct 31, 1989 |
| Priority date | — |
| Expiry date | Oct 14, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B35/0093
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A safety device for restraining a person who works at great heights. The device comprises a housing, a drum rotatably mounted and contained within the housing, and a lifeline having a first end attached to the drum, and a second end extending outside the housing and adapted to be connected to a restraint. The lifeline is wound around the drum in response to the drum being rotated in a restraining direction, and the lifeline is unwound from around the drum in response to the drum being rotated in an opposite extending direction. The device also includes a spring for biasing the drum to rotate in the retracting direction, and a brake for braking extending rotation of the drum at an angular velocity in excess of some predetermined speed. When the person wears a body harness having crossed safety straps on one of the person's chest or back, the device further includes an attaching plate for slidably connecting the crossed straps to the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.