| 摘要 |
A positionable and expandable tube system composed of snappingly engageable tube segments for the construction of hamster, gerbil, or like pet tubes. Each tube segment consists of an upper and a lower truncated sphere connected at an annular intersection. The preferred embodiment incorporates an arcuate notch which accommodates the annular intersection in the lower truncated sphere to allow a greater maximum bend angle compared to a tube segment where an arcuate notch is not incorporated. The tube segments, when snappingly engaged, create frictionally positionable ball and socket joints.
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