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公开(公告)号:US20210252693A1
公开(公告)日:2021-08-19
申请号:US17250201
申请日:2019-06-17
摘要: An apparatus can comprise multiple links, the multiple links comprising at least a first link, a second link, a third link, and a base link, each of the multiple links comprising a rigid sheet, the first link being hingedly coupled to the second link via a first joint, the second link being hingedly coupled to the third link via a second joint, the third link being hingedly coupled to the base link via a third joint, the base link being hingedly coupled to the first link via a fourth joint. The multiple links defining at least a portion of a cylinder when the apparatus is in a stowed position, the first joint, second joint, third joint, and fourth joint being aligned parallel to each other and aligned parallel to a longitudinal axis of the cylinder.