Invented by William Albee, who got his inspiration for the idea during an Alaskan fishing trip in 1950. Albee saw some natives move a boat up a bank by rolling it on several inflated airtight seal skins.
Apparently it also doubles as a back massager:
US Army Rolligon trial run stock footage. 54-second video:
I believe this is the correct patent. Apparently Albee had some trouble marketing the concept, and sold it to John Holland:
The Rolligons are still in use today, in oil mining operations in Prudhoe Bay in northern Alaska:
More:
Airtight seal skins inspire rolligons - August 12, 2007 - Petroleum News
https://www.google.com/patents/US3744585
Previously:
The Sherp Russian 4x4 vehicle
Sealegs amphibious fishing boat
Boat that pulls itself ashore
Arctic convoy to the DEW Line with giant Mack trucks
Unimog portal axles
autobiography of a Jeep
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