Patent ID: 8303444
Filing Date: 2012-11-06
Classification: F01L,F02B,F16F,F16H,Y10T

Abstract:
1. A drive apparatus comprising: a plurality of rotors comprising a first rotor and a second rotor, the first rotor having a plurality of first teeth, the second rotor having a plurality of second teeth; an endless power transmitting member having a plurality of engaging sections, a first portion of the engaging sections engaging the first teeth and a second portion of the engaging sections engaging the second teeth, wherein translation of a segment of the endless power transmitting member located between the first and second rotors is associated with the transmission of rotary power to at least one of the first and second rotors; and a rotary load coupled to the second rotor, the rotary load presenting a fluctuating load torque when driven in rotation; wherein one of the rotors has a lobed profile having a plurality of lobes spaced apart thereon, the plurality of lobes being configured to generate an opposing fluctuating torque that is configured to reduce the fluctuating load torque presented by the rotary load.