Modular design of essential components with the following safety features:

		Hoist mechanisms with independently operating safety brake
		Spindle mechanisms with automatic safety nut
		Cradle suspension with overload switches
		Rope spooling mechanism with electrical slack rope control
		Traversing gears with heavy duty gripping claws against derailing
		Moving parts with sealed and life-time lubricated ball bearings
		Highest protection of all electrical parts, exposed to climatic elements
		Dead-man's control for all movements as well as emergency-push button stops at each control panel
		All final positions of the movements are limited "operational"- and if necessary by additional "emergency" limit switches and/or solid mechanical stops