continuous chain hoist

См. также в других словарях:

• Fly system — Fly loft of the Theater Bielefeld in Germany A fly system, flying system or theatrical rigging system, is a system of lines (e.g. ropes), blocks (pulleys), counterweights and related devices within a theatre that enable a stage crew to quickly,… …   Wikipedia

• Differential pulley — Figure 1  Differential pulley. A differential pulley, sometimes called a chain hoist, or sometimes colloquially called a chain fall, is used to manually lift very heavy objects like car engines. It is operated by pulling upon the slack… …   Wikipedia

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