Hydraulic drive and hydraulically operable working tool
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United States of America Patent
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Jun 7, 2016
Grant Date -
Mar 27, 2014
app pub date -
Mar 18, 2013
filing date -
Sep 21, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A hydraulic control, for example of a hydraulically operable working tool, includes a hydroconsumer that can be acted upon against a permanent force via a pressure source, and a switching valve with working power/pressure control function reacting against a spring force depending on a pressure and/or through flow volume. The switching valve connects the hydroconsumer with a tank for a return stroke of the hydroconsumer when the pressure source is switched off. The hydroconsumer can be hydraulically stopped with the return stroke via the pressure source by a pressure pulse and/or through flow volume pulse. In a hydraulically operable working tool, the hydroconsumer can be hydraulically stopped in the return stroke even before a predetermined end position is reached by switching on the pressure source.
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