A treehouse play set for use with action figures includes a tree-shaped base having a hollow trunk portion and a treehouse platform attached to the trunk portion, and further includes an elevator which is slidably movable on the exterior surface of the trunk portion between a first lowered...http://www.google.fr/patents/US5722874?utm_source=gb-gplus-shareBrevet US5722874 - Treehouse play set with elevator platform and extendable branch members
Treehouse play set with elevator platform and extendable branch members