MULTIMODE WRENCH Russian patent published in 2017 - IPC B25B13/46 

FIELD: tools.

SUBSTANCE: invention relates to all-mode unidirectional wrenches. Wrench comprises head, ratchet, two pawls (41, 51) and switch. Head comprises cutouts, connected to cavity. Ratchet with teeth is placed in cavity. Pawls (41, 51) are installed in cutouts with possibility of displacement and alternate contact with ratchet teeth. Pawl (51) has pin. On head there is a switch, made with at least one arched groove for directing of part of incoming pin for displacement of pawl (51) from first mode, in which it engages with ratchet teeth, in position of second mode, in which contact with ratchet teeth is impossible. Cutouts are shifted relative to each other by angle of 360°×(M+1/L)/N, where L is integer number, equal to number of cutouts; M is any integer number and N is integer number equal to number of teeth.

EFFECT: technical result consists in improvement of convenience in operation with wrench and simultaneous preservation of wrench strength.

13 cl, 8 dwg