Inner and outer chain plates for bicycle having multiple wheels
 An inner and an outer plates for bicycle having multiple wheels of the present invention is to partially deform the inner plates and outer plates. The inner plates of the present invention have extending two triangular protuberances at respective edges of a reduced portion with the top marginal edge of each closed to the edges. The outer plates of the present invention have also extending a pyramidal protuberance from a reduced portion at one side thereof, with the respective bottom ends extending out of a portion therefrom. 
F
F16G
inventional
Wen B.
Wang