WORKING TOOL Russian patent published in 1999 - IPC

FIELD: agricultural and garden hand-held tools. SUBSTANCE: working tool has guiding shaped slot for receiving one end of rigid retainer whose other end is attached to handle. Shaped slot rectilinear portion leads to sleeve larger end and extends along axis of conical joint. This portion makes junction with other portion directed in spiral path relative to conical joint axis. Width of slot corresponds to size of retainer end received in slot. Seating pair containing working tool conical sleeve and handle conical shank makes conical screw joint providing mutual biasing of parts to joined. EFFECT: increased efficiency, simplified assembly and disassembly of working tool. 4 dwg