Figure 2

Hinge transpose. A Bennett linkage with self-intersection (a), a transposed panel (b) and the same linkage with a transpose of the fourth hinge (c) that produces a developable version of the mechanism. The unchanged links are in gray.

Hinge transpose. A Bennett linkage with self-intersection (a), a transposed panel (b) and the same linkage with a transpose of the fourth hinge (c) that produces a developable version of the mechanism. The unchanged links are in gray.