J.d. Neuhaus Holding Gmbh & Co. Kg

Piotr Krupnik

Simon Brose

Jörg Brinkmann

A fluid-operated hoist and method for operating a fluid-operated hoist. The hoist is particularly convenient to produce and install and can be permanently and reliably operated without frequent maintenance. The hoist includes a fluid supply line supplying an operating fluid to the hoist for operating the hoist, a generator connected to the fluid supply line for generating electricity by the operating fluid, and an electrical consumer on the hoist that is operated by the electricity generated by the generator.

Fluid-operated lifting gear

A control valve assembly for indirect pneumatic control and method for controlling a working fluid pressure, which enable precise, sensitive and speed-variable controlling. The assembly includes two valve units, a working fluid inlet, and a control fluid inlet. A working fluid channel connects the working fluid inlet through the two valve units to an outlet. A valve piston arranged within a valve cylinder of the valve units is movable between open and closed positions. A spring element biases the valve piston toward the closed position, and a control pressure chamber applies a control pressure counteracting the spring element's bias. When a control pressure is applied in the first chamber, the first valve piston is moved to the open position. Two opposite valve surfaces form a valve opening opened at varying widths when the valve piston is moved in the valve cylinder because of a changing control pressure, and the working pressure can be finely adjusted corresponding to the valve opening width depending on the control pressure.

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Iserlohn, Germany

Piotr Krupnik