53. Magnetic Stirring Capsules
    Stéphane Rosset, Clément Mazet, Christophe Girard
    International Patent Application 2017, WO/2017/216361

Magnetic stir bar (1) for use with a magnetic stirrer, said magnetic stir bar (1) comprising at least one permanent magnet (2) for spinning said magnetic stir bar (1) when said magnetic stir bar (1) is subjected to a rotating magnetic field; and a chamber (3) for storing a product inside said magnetic stir bar (1), wherein said magnetic stir bar (1) has a closed configuration in which said chamber (3) is closed, said magnetic stir bar (1) being maintained in said closed configuration under the effect of a first force (f), and an open configuration in which said chamber (3) is open, said magnetic stir bar (1) being maintained in said open configuration under the effect of a second force (F); and wherein said magnetic stir bar (1) is adapted to automatically reconfigure itself from said closed configuration to said open configuration when said magnetic stir bar (1) is spun at or above a threshold rotational speed (ωt).

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