WRENCH Russian patent published in 2016 - IPC B25B13/56 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to manual tools intended for threaded connections assembly and disassembly. Wrench is made of sheet metal with perforation in form of spans with various sizes. At that, sheet material is bent to form U-shaped spans of various sizes. At that, some spans side surfaces are simultaneously adjacent spans side surfaces, and surfaces, perforated by spans are arranged on top of U-shaped spans with possibility to accommodate nuts and rods with threaded joints threads.

EFFECT: technical result consists in maximum use of wrench sheet material to arrange maximum number of spans with various sizes.

1 cl, 2 dwg