Variable gear transmission system Patent #: 4497221
ApplicationNo. 129165 filed on 10/06/1993
US Classes:74/439, Sectional475/182PLANET PINION ENGAGES FLEXIBLE BELT OR CHAIN
ExaminersPrimary: Herrmann, Allan D.
Attorney, Agent or Firm
Foreign Patent References
International ClassF16H 055/17
Foreign Application Priority Data1991-04-06 DE
AbstractA toothed wheel with a variable number of teeth has a toothed ring formed by a driving chain or belt. The referenced diameter of the toothed wheel can be modified by adding or removing individual links by means of an auxiliary toothed wheel; so as to modify the length of the drive chain. At least one transmission member cooperates with the toothed wheel to insure the transmission of energy. The auxiliary toothed wheel is displaced together with the lateral guide of the driving chain, so that its radial spacing from the axis of rotation changes synchronically with the radial spacing change of the lateral guide of the driving chain.