ELECTRICALLY DRIVEN TOOL Russian patent published in 2013 - IPC B25F5/00 

FIELD: process engineering.

SUBSTANCE: invention relates to electrically driven tools, particularly, to radial grinders. C-shape spring element 44 is arranged between driven gear 26 and spindle 30 of torque transfer system. Spring element 44 engages with lead ledge 48 of driven gear 26 and slave ledge 50 of spindle coupling 42. In transmission of torque of driven gear 26 to spindle 30, said spring element is subjected to elastic strain in direction of diameter increase depending on drive side load to cushion initial impact. Thrust surface 50a of lead ledge 50 is composed of inclined surface to make spring element end section in contact with thrust surface 50a slide radially outward. This allows spring element 44 to be readily strained in direction of diameter increase.

EFFECT: cushioned initial impact of torque transfer.

11 dwg