Screwdriver used as a hand screwdriver comprises couplings each consisting of a locking bushing, a catch bushing and a pressure spring with a pre-tension between the couplings on a toothed casing

摘要

Screwdriver comprises couplings each consisting of a locking bushing (3a, 3b), a catch bushing (4, 5) and a pressure spring (9) with a pre-tension between the couplings on a toothed casing (2). The couplings have a toothed wheel work interacting with the front sides of the locking bushings and the catch bushings. The catch bushings interlock with a handle (14) whilst the locking bushings interact with the inner toothed arrangement in the outer toothed arrangement of the toothed casing. Preferred Features: The catch bushings have a round bore in which the toothed casing rotates. The locking bushings are guided with their cylindrical surfaces in the recesses of the handle.