Armstrong, Nikaido, Marmelstein & Kubovcik
Vibration and noise reduction means for a transmission vehicle
 A transmission for vehicles including a plurality of alternative gear trains. It comprises a mechanism for bringing an end face of a boss of at least one gear, not concerning the power transmission, on a shaft and a surface of another member, relatively rotating with respect to the gear, on the shaft into slideable contact with each other under force of a spring. Vibration and noise due to those gear trains not contributing to the power transmission are effectively prevented. 
Honda Giken Kogyo Kabushiki Kaisha
F F F F Y
F16H F16H F16F F16H Y10T
inventional inventional inventional inventional additional
Masao Takashi Hiroshi Yoichi
Nishikawa Aoki Yoshizawa Sato