DEVICE FOR SUPPLY OF WORKING LIQUID TO HYDRAULIC TOOL Russian patent published in 2004 - IPC

FIELD: hydraulic engineering; supply of hand hydraulic tools. SUBSTANCE: according to invention, in device for supply of working liquid to hydraulic tool to manifold of which lines to deliver liquid to actuating mechanism and remove liquid from mechanism, each containing high-pressure flexible hoses and connecting members, one of said lines consists of hose in metal sheathing on ends of which nipples are fitted made of conducting material, places of fitting are upset by metal bushings and other line is composed of two butt-joined hoses, with hose furthest from manifold is provided with metal sheathing and hose close to manifold has no sheathing, and nipples made of conducting material are placed on ends of said hoses and between the hoses and are upset by metal bushings. Device is provided with jumper made of conducting material for simultaneous contact with surface of bushings located on ends of hoses furthest from manifold. EFFECT: improved reliability. 1 dwg