METHOD FOR OPERATING A HYDRAULIC PUMP ARRANGEMENT, AND HYDRAULIC PUMP ARRANGEMENT
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United States of America Patent
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Issued Date -
Mar 12, 2015
app pub date -
Mar 30, 2012
filing date -
Mar 30, 2012
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Abstract
A hydraulic pump arrangement for a portable hydraulic tool operates energy-independently or dependent on a power network. The hydraulic pump arrangement detachably connects via hose to the hydraulic tool, is driven by an electrical energy source and is controlled in a load-dependent manner by changing between a load state and a non-load state. The load state has a first, higher electrical energy supply and the non-load state has a second, lower electrical supply. To increase usage flexibility, usage safety and ease of use, a battery is mounted on the hydraulic pump arrangement to be manually detachable in a receptacle accessible from the outside. A power adapter (25) connects an electrical cable to a generator (29). The battery (24) and the power adapter (25) have a geometry matching the receptacle (26), so the hydraulic pump arrangement can be supplied with power via the battery (24) or the power adapter (25).
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