UNIVERSAL SCREW DRIVER Russian patent published in 2011 - IPC B25B15/00 

FIELD: machine building.

SUBSTANCE: universal screw driver consists of base and of replaceable heads. The base corresponds to a plate with a case of a handle on top and an axle of a drum below. A rod with a head and two lugs perpendicular to its axis is installed inside the case of the handle; the rod passes through the drum and travels vertically. In the case of the handle there are made two vertical slits for vertical travels of the rod lugs and two horizontal slits for fixing an upper position of the rod. Replaceable spring loaded heads are installed in the drum symmetrically to its axis. Each head consists of a rod, an edge and a cap with a guiding lug. From below on the cap of the rod there is made a slit. The second bottom with holes for heads and the axle of the drum is installed inside the drum perpendicular to its axis.

EFFECT: increased convenience of use.

7 cl, 2 dwg