Mechanical safety fuse link
US6820505B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2002 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Apr 29, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L5/047
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A serial element of a load lifting line has a telescoping body held in a short configuration by a linear slip clutch until a selected load on the line is exceeded. The slip clutch then allows the body to extend to a longer configuration in which it is retained as a length unit by abutting surfaces between which an elastomeric shock cushion is positioned. An optional arrangement includes a biasing provision to restore the link to the original condition, for further use, after the load is reduced. By utilizing optional provisions, the link can signal the overload condition by a whistle when the telescoping body extends. Visible signals can, optionally, be provided by members that extend from the body when the body is telescoped to the longer condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.