Armstrong, Nikaido, Marmelstein & Kubovcik
Wheeled vehicle with rotatable endless track
 A wheeled vehicle having a source of driving power and a chassis extending longitudinally of the vehicle, which comprises a rotatable endless track device disposed between front and rear wheels of the vehicle, a system for selectively raising and lowering the endless track device with respect to the chassis whereby when the endless track device is lowered it is brought into contact with the road surface, and a connecting apparatus for drivably connecting the endless track means with the source of driving power when the endless track device is lowered and brought into contact with the road surface. 
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inventional inventional inventional
Masaharu Hirozumi
Saito Toyoura