CAM-TYPE PULSE VARIABLE-SPEED DRIVE Russian patent published in 1999 - IPC

FIELD: drives for continuous regulation of speed of output member. SUBSTANCE: cam-type pulse variable-speed drive has cam and two converting mechanisms mounted in parallel. First converting mechanism includes driven shaft, overrunning clutch, pusher and adjusting mechanism which consists of slider moving along pusher over guide of body and hinged support turnably arranged in bore of slider. Pushers is received by hole in hinged support swinging about its axis. Pusher of second converting device is located is located on opposite side of cam and is linked with pusher of first converting mechanism. Holddown made in form of rod with supports at the ends and two springs is used for pressing both pushers to cam. Rod is freely mounted in through slots of both pushers. Springs are located between respective stop and pusher. Driven shafts of converting mechanisms are linked by means of gear train. EFFECT: simplified construction; increased specific speed; enhanced reliability and increased service life. 1 dwg