Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Herbert Baltes0
Date of Patent
February 22, 2011
0Patent Application Number
119920530
Date Filed
August 5, 2006
0Patent Primary Examiner
Patent abstract
A hydraulic unit, in particular for lifting and lowering loads in stacking trucks, has at least one working cylinder (10). The piston/rod unit (12) of the cylinder is guided movably in a housing (22). By a hydraulic pump (25), the piston/rod unit can be extended in its one drive direction (30) and can be retracted in its other opposite drive direction (32). A control device (20) actuates the displacement movements to that effect. A storage device (38) is fed energy in one drive direction (32). The energy fed in can be called up from the storage device (38) to assist a displacement movement in an opposite drive direction (30).
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