PNEUMATIC NUT-DRIVER Russian patent published in 1996 - IPC

FIELD: mechanical engineering, assembly automation equipment, labour-consuming repairs of various equipment. SUBSTANCE: the nut-driver has a body accommodating a spindle head coupled to a propeller blade turbine through a quill shaft, stem with a ground hole installed for movement in the spindle head, and a handle with a starting mechanism installed on the body, and having air ducts communicating with the inlet and outlet ports. The pneumatic nut-driver is provided with a replaceable adapter installed in the stem, pairs of diametrically opposite bevelled teeth, abutting with damping rings, having end supporting edges, through annular grooves. A yoke is freely fitted between the gear sets, the yoke is made with internal oblique slots corresponding to the teeth of these sets for engagement with them at axial shifts of the stem, and with external diametrically opposite lobes for engagement with lobar cuts made on the inside diameter of the mentioned head. The quill shaft is connected with the front barrel-shaped part to the head on the side of its cuts, and installed in bearings in the body made integral with the eccentric cylinder of the pneumatic turbine passing between the bearings. The ground rotor with turning segment parts is secured on the shaft between the disk intermediate walls. EFFECT: enhanced efficiency. 11 cl, 5 dwg