REVERSIBLE DRIVE OF ADEQUATE CHANGE-OVER SOCKET WRENCH Russian patent published in 1997 - IPC

FIELD: socket wrenches. SUBSTANCE: drive has body 1 accommodating wedging driven sprocket with formation of circular hollow. The sprocket is combined of two webs 2 and 3 with central openings and installed at some distance from each other and fixed with each other. Drive also has wedging rollers 5 located in circular hollow 16 for wedging of working surfaces of body 1 and driven sprocket, changing-over device for adequate change of direction of working run and made in the form of drum installed for limited turning in both directions. Drum consists of two webs 6 located in central openings of webs 2 and 3 of sprocket and connected by means of pins 7 located over circumference, and levers 9 located in hollow between web pairs of sprocket and drum for interaction with respective pins of drum and wedging rollers rectangular in cross-section and clamps. EFFECT: higher efficiency. 2 cl, 3 dwg