Round load lifting sling
US4757719A · kind A · utility
22Cited by
3References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 15, 1987 |
| Grant date | Jul 19, 1988 |
| Priority date | — |
| Expiry date | May 15, 2007 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD07B1/145
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A round load lifting sling composed of an endless skein of threads as a load bearing core and a textile protective tube surrounding the endless skein, the endless skein carrying along a testing conductor which is connected with two connecting contacts which penetrate the wall of the protective tube for connection to a source of testing medium to flow through the testing conductor. Damage or severance of the threads of the skein is detectable by an interruption in flow of the medium due to accompanying damage or severance of the conductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.