A transmission-steering assembly for a crawler vehicle has a propeller shaft and two output shafts extending along a transverse axis of the vehicle. The two output shafts drive respective tracks of the vehicle, and are driven by the propeller shaft via the interposition of respective identical reduction...http://www.google.ca/patents/US6656074?utm_source=gb-gplus-sharePatent US6656074 - Crawler vehicle transmission-steering assembly
