SommarioL'autore presenta la geometria e la cinematica di due sistemi articolati costituiti da un insieme di membri rigidi rettilinei accoppiati rotoidalmente. Nel primo caso si ha una griglia cinematica che, dalla configurazione chiusa iniziale, si può estendere in due direzioni su una superficie cilindrica chiusa (o aperta). Nel secondo caso, la griglia cinematica si estende su una superficie a doppia curvatura, ad esempio un paraboloide. Le caratteristiche delle due superfici richiedono, per i sistemi articolati, due soluzioni diverse. Queste soluzioni sono state brevettate dal C.N.R.SummaryThe author illustrates the geometry and the kinematics of two articulated systems built up of a set of rigid, rectilinear elements, pin-jointed together. In the first case, we have a kinematic grid which, from its initial closed shape, expands along two directions on an open (or closed) cylindrical surface. In the second case, the kinematic grid expands on a double curvature surface like, for instance, a paraboloid. The characteristics of the two surfaces requires, for a single or double curvature, two different solutions. They have been patented by the National Research Council.
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