Slope monitoring device
US5216922A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1991 |
| Grant date | Jun 8, 1993 |
| Priority date | — |
| Expiry date | Dec 4, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B5/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A slope monitoring device includes a cable anchored at one end to the sloped wall of an open pit mine, dump, or the like. The cable extends over an idler pulley at the top of the sloped wall and passes around a further pulley coupled to an optical shaft encoder which generates a digital signal corresponding to the angular position of the pulley. The cable is engaged by a clutch and is wound about a play-off reel, each secured to a weighted sleeve slidingly extending about a vertical post. The weighted sleeve maintains tension upon the cable, while the clutch allows additional cable to be played off of the reel when tension is increased due to movement of the wall. The shaft encoder information, along with the temperature, battery condition, and cable condition, are transmitted by radio to a remote location for processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.