Silent chain

Abstract

String vibration is reduced without causing friction loss. A silent chain is comprised of a multiple number of link plates, each of which has a pair of tooth portions and pin holes and which are laminated laterally and longitudinally and guide plates which are arranged at outermost positions of the link plates. The link plates and the guide plates are connected by connecting pins. In this construction, some of the guide plates are made heavier than that of other guide plates and are irregularly mixed in a longitudinal direction of the chain. Thus, the natural frequency can be changed in an arbitrary chain span and string vibration may be reduced without causing friction loss.

1 . (canceled) 
   
   
       2 . (canceled) 
   
   
       3 . (canceled) 
   
   
       4 . A silent chain comprising a multiple number of link plates, each of which has a pair of tooth portions and pin holes and which are laminated laterally and longitudinally to be connected with connecting pins in a pivotable manner, wherein at least two types of link plates having a different weight from each other are irregularly mixed in a longitudinal direction of the chain. 
   
   
       5 . The silent chain of  claim 4 , wherein each of the link plates having a different weight from each other is different from each other in plane shape, plate thickness, or material. 
   
   
       6 . The silent chain of  claim 5 , wherein the plane of each of the link plates is different from each other in a back face shape. 
   
   
       7 . A silent chain comprising a multiple number of link plates, each of which has a pair of tooth portions and pin holes and which are laminated laterally and longitudinally to be connected with connecting pins in a pivotable manner, wherein at least two types of connecting pins having a different weight from each other are irregularly mixed in a longitudinal direction of the chain. 
   
   
       8 . The silent chain of  claim 7 , wherein each of the connecting pins having a different weight from each other is different from each other in cross-sectional shape, diameter, or length. 
   
   
       9 . A silent chain comprising a multiple number of link plates, each of which has a pair of tooth portions and pin holes and which are laminated laterally and longitudinally to be connected with connecting pins in a pivotable manner, wherein washers are fixed to end portions of the connecting pins and the washers are irregularly positioned in a longitudinal direction of the chain. 
   
   
       10 . (canceled) 
   
   
       11 . (canceled) 
   
   
       12 . (canceled)