RACHET NUT WRENCH Russian patent published in 1998 - IPC

FIELD: manual tool for tightening threaded joints. SUBSTANCE: nut wrench includes handle with hinged tips and rachet mechanisms of clockwise and counterclockwise rotation. Rachet mechanisms are in the form of axially spring-loaded end clutch halves. Each hinged tip includes ball stopper of coaxial position of handle and respective rachet mechanism. Each driving clutch half is provided with hinged fork and rod mounted coaxially relative to driving clutch half and having head on its one end. Head is arranged in axial opening of driven clutch half and it engages through cone spring with driven clutch half having working tip. Each ball stopper is arranged on respective hinged tip of handle with possibility of engaging in its fixed position with another flared end of respective rod. EFFECT: reduced size of nut wrench in axial direction at maintaining its cross dimensions, simplified design and assembling process of wrench. 2 cl, 4 dwg