The lower end of the ladder may be provided with wheels f running on a rail g. The ladder may be furnished with platforms or landings. In a modification, the ladder consists of short ladders h, Fig. 5, connected to landings one above the other, the whole being carried by a framework ...
Platforms can be designed to suit any requirement where off-the-shelf fabricated platforms are not applicable, or when ladders or towers are not appropriate. The engineered designs using modular components allow the platforms to be delivered and constructed quickly and easily with minimal site ...
Another drawback of the known elevating platforms lies in the relatively limited stroke defined between the low position and the high position of the platform with respect to the ground. In fact, the position occupied by two same uprights connected together in rotation in high position is not p...
it can be unstable on frozen ground that is subject to thawing, and is not easily moved to accommodate exchange of equipment at the wellhead. In addition, this type of scaffolding is accessed by ladders which represent an additional safety hazard. Other types of platform configurations include: ...
20100213009STABILIZING MECHANISM FOR LADDERSAugust, 2010Guinovart et al. 20160303407Worker Safety Device and MethodOctober, 2016Galli 20100270107Manually-Releasable Fall Arrest DeviceOctober, 2010Ruis 20140251723SHOWER SAFETY SYSTEMSeptember, 2014Moriah
A hoist or tackle cable is directed to a working location by a cantilever crane arranged at the upper end of the suspension tube. The working platforms, which are accessible by way of ladders and trap doors, are secured by railings and hinged barriers.doi:US5230404 AHorst Klein...