An endless track for a track-type vehicle such as a crawler vehicle or the like, including an endless, tire-like, flexible carcass including a fluid receiving chamber that is at least partially collapsible, the chamber being defined by at least two cells arranged in substantially side-by-side orientation...http://www.google.com.au/patents/US4056288?utm_source=gb-gplus-sharePatent US4056288 - Endless track for crawler vehicles
