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US 11,203,001 B2Granted
Magnetic stir bar
AssigneeUniversite De Geneve
InventorsStéphane Rosset, Clément Mazet, Christophe Girard
Life of this patent
Estimating the term…
Abstract
Magnetic stir bar having at least one permanent magnet to spin the magnetic stir bar when the magnetic stir bar is subjected to a rotating magnetic field. The magnetic stir bar has a chamber to store a product within the magnetic stir bar. The magnetic stir bar has a closed configuration in which the chamber is closed and an open configuration in which the chamber is open. The magnetic stir bar automatically reconfigures itself from the closed configuration to the open configuration when said magnetic stir bar is spun at or above a threshold rotational speed.
Claims9
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) and wherein said second force (F) is stronger than said first force (f).
3 more elements
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);
- the magnetic stir bar further comprising a first part (10) and a second part (13)
- detachable from said first part (10), wherein each part (10, 13) comprises:
- at least one permanent magnet (2);
- a cavity (31, 32) forming at least part of said chamber (3) when said magnetic stir bar (1) is in said closed configuration,
- wherein said at least one permanent magnet (2) of each part (10, 13) is positioned within said part (10, 13) such that they attract each other when said magnetic stir bar is in said closed position and when said magnetic stir bar is in said open position.
8 more elements
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;
- a chamber (3) for storing a product inside said magnetic stir bar (1);
- tightening means (4) for hermetically closing said chamber (3) when said magnetic stir bar (1) is in said closed configuration,
- 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).
3 more elements
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) and
- wherein the chamber has a plurality of compartments that are separated from each other when said magnetic stir bar is in said closed configuration.
4 more elements
Dependencies are inferred from the claim text.