FIELD: treatment of materials by pressure. SUBSTANCE: manual hydraulic tool has hydraulic cylinder, hydraulic pump and reservoir for working medium coupled to one another rigidly. Operating member and rest are coupled to hydraulic cylinder rod. In addition, hydraulic cylinder is coupled with working medium reservoir through by-pass valve. Hydraulic cylinder rod is moved either by actuating the pump lever or by acting on rest with cock open. EFFECT: reduced muscle effort. 2 dwg
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Authors
Dates
1999-09-10—Published
1997-10-21—Filed