US Patent 7025924 Dual container system and method of manufacturing the same

There is provided a container system adapted to withstand a single impact or repeated impacts. The container system features a first container having a first container body. The container system further features a second container which has a second container body. The second container defines a second body height and a second body wall thickness. A body recess which is adapted to releasibly engage the first container body of the first container is formed on the second container body and is extended along the second body height. The body recess defines at least one recess bottom corner having a recess bottom corner wall thickness which is at least identical to the second body wall thickness of the second container body. This specified bottom corner wall thickness of the body recess allows the second container to withstand the single impact or repeated impacts.