PULSE TYPE VARIABLE SPEED DRIVE Russian patent published in 2001 - IPC

FIELD: machine engineering, namely pulse type variable speed drives. SUBSTANCE: pulse type variable speed drive includes driving and driven shafts, toothed pair and conversion mechanism having outer eccentric and inner eccentric with counterweight, disc, freewheel unit. Disc is in the form of sprocket. Counterweight of inner eccentric also is eccentric. Outer eccentric is joined by means of pin with groove of gear wheel and groove of counterweight of inner eccentric. Control mechanism is in the form of threaded roller. Control lever with nut rigidly secured to it engages with threaded portion of roller. Elongated nut is joined with inner eccentric. EFFECT: reduced axial dimensions, simplified design of transmission with balanced rotary masses. 4 dwg