OVERRUNNING RATCHET MECHANISM Russian patent published in 1998 - IPC

FIELD: transmission of rotation in pulse drives and starters. SUBSTANCE: two disks are secured to ratchet wheel. Disks are made in form of two concentric rings with different friction coefficients. Holder has radial lugs provided with convergent profiled radial grooves. Plates mounted in holders on axles are engageable with teeth of ratchet wheel. Secured on plates are sleeves with movable slide blocks inserted in them; slide blocks are released b springs. Stops provided at ends of grooves are used for limitation of plate motion. Movable members of springs are received by grooves. EFFECT: enhanced durability of device due to proper rate of springs, their precompression, selection of proper materials for disks and other parameters. 3 dwg