System and device for controlling a load lifting device
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United States of America Patent
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Dec 13, 2005
Grant Date -
N/A
app pub date -
Oct 2, 2000
filing date -
Feb 11, 1999
priority date (Note) -
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Abstract
The invention relates to a system for controlling a load lifting device (1) with a controllable drive (2) and a lifting element (5) which is linked with the drive (2) and which is—at least in a non-operational position due to the gravitational force—vertically (Z—Z) aligned. A load receiving element (7) is linked with the lifting element (5). The system further comprises a control circuit for balancing the loads. Said control circuit encompasses a device for producing a path-dependent signal which corresponds to a substantially vertical (Z—Z) movement of the lifting element (5) and which represents the input signal for the control of the drive (2).
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