FIELD: mechanical engineering. SUBSTANCE: drive shaft 4 is located in plane of handle 1 of socket wrench with possibility for axial displacement. Driving gear wheel 6 of gearing unit is connected with drive shaft 4. Driven gear wheel 5 is fixed on spindle 2 having hole 7. Locking of gear wheels 5, 6 is effected by displacing drive shaft 4 in handle 1. Final tightening of threaded joint is effected by rotation of handle 1. EFFECT: high efficiency. 2 dwg
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