ApplicationNo. 325415 filed on 03/17/1989
US Classes:474/242, Belt has oppositely facing side drive surfaces (e.g., "V-belt", etc.)474/245And sequential pairs are interconnected longitudinally by distinct pivot elements
ExaminersPrimary: Bui, Thuy M.
Attorney, Agent or Firm
Foreign Patent References
International ClassF16G 001/24
Foreign Application Priority Data1988-03-18 JP
AbstractA chain belt for stepless speed change transmission is provided wherein the connecting link rocker pins are arranged so that when the chain links are rotated relative to each other the pitch changes. This phenomena is used to reduce the drive noise generated with standard types of chain belts when they wrap around the drive pulley, due to a change in the relative speed of the drive block. From tests it is found that having the drive blocks outside of the chain line is more effective in reducing this relative velocity. Further having oval shaped drive blocks reduces the stress concentration at the region where load is transferred from the pulley to the chain belt, and by having an oval shape instead of a round shape the inclined end contact faces can be positively aligned to mate properly with the drive faces of the pulleys.
Field of SearchFRICTION DRIVE BELT
Belt has oppositely facing side drive surfaces (e.g., "V-belt", etc.)
Oppositely facing surfaces are on pair of discrete elements
And sequential pairs are interconnected longitudinally by distinct pivot elements
BELT HAVING DRIVE SURFACES ON OPPOSITE SIDE EDGES OF STACKED PLATES HAVING PLANAR FACES PERPENDICULAR TO DIRECTION OF BELT MOVEMENT