Hydraulic device for supplying a hydraulic driving unit

Details Hydraulic device for supplying a hydraulic driving unit Hydraulic device for supplying a hydraulic driving unit

1994-10-14

1996-01-23

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Feed control of material en route to shaping area

264 405, 425150, B29C 4580

Patent

active

054861063

ABSTRACT:
In a hydraulic device a variable capacity pump adapted to record a differential pressure via a control valve is actuated in such a way that a constant operational pressure gradient is maintained. Since the variable capacity pump is driven by a rotary current motor, which is connected to a current source by a frequency converter and is regulable with regard to its speed, it is possible to control hydraulic consumers in an energy-saving manner at a reasonable price.

REFERENCES:
patent: 5186954 (1993-02-01), Miyahara et al.
patent: 5266247 (1993-11-01), Yokota

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