Spanner for hexagonal objects, has mouth with non curved flanks and curved rear side connected via recesses

摘要

The spanner head (2a), which extends at 15 deg. and is rigidly connected to the handle (2), has two jaws (4, 4a) with flanks (8, 8a) on the inside which are designed to be centrally positioned relative to the adjacent sides (7, 7a) of the hexagonal object (6). The front ends (20, 20a) of the jaws diverge in the outwards direction. The stop (5) for the hexagonal object is formed at a location approximately at the midpoint of the curved rear side (10b) of the spanner mouth. This curved rear side extends between two recesses (9, 9a).