Centrifuge construction having central stator

In a centrifuge having:

• a rotor for containing at least one sample to be centrifuged;
• at least one bearing for supporting and rotating said rotor;
• and,
• stator means for generating a rotating magnetic field to rotate said rotor on said bearing to centrifuge said sample;
• the improvement comprising:
• a rotor having a ring shaped portion for fitting over said stator and rotating within said ring shaped portion said at least one sample to be centrifuged about said stator;
• and,
• means for entraining the magnetic field attached to said rotor for coupling to said rotating magnetic field of said stator.

In a centrifuge having:

• a single central stator for producing a rotating magnetic field;
• a rotor for containing at least one sample to be centrifuged;
• means to incorporate permanent magnets into said rotor to rotate with said rotating magnetic field;
• and,
• at least one bearing for supporting and rotating said rotor;
• the improvement to said rotor comprising:
• said rotor having a ring shaped portion to define a large single central aperture for rotating peripherally exterior of and about said stator.

A rotor for a centrifuge comprising in combination:

• a rotor body having a ring shaped portion symmetrical about a spin axis for said rotor;
• said ring shaped portion having means for containing at least one sample eccentric to said spin axis;
• said rotor including an inner periphery region defining a large single central and vacant aperture aligned concentrically about and along said spin axis;
• and,
• means for entraining said rotor with a rotating magnetic field positioned within the inner periphery region of said large single central and vacant aperture of the rotor.

A centrifuge comprising:

• a body;
• a stator having a vertically extending, external circumferential surface and being mounted to the body;
• means on said stator for generating a rotating magnetic field relative to said stator from power supplied to said stator;
• a rotor defining a vertical axis and having a vertically extending, internal circumferential surface positioned opposite and surrounding the stator;
• a bearing, supported by at least one of the stator and the body, supporting the rotor for rotational movement about the axis and around the stator;
• the rotor including a centrifuge region for containing a material to be centrifuged;
• and,
• a controller/driver supplying the power to the stator for driving the rotor about the axis.

A centrifuge comprising:

• a central stationary stator for producing a rotating magnetic field;
• a rotor defining a vertical axis and having a vertically extending, internal circumferential surface positioned opposite and surrounding the stator;
• said rotor mounted peripherally to said central stationary stator defining at least one aperture for receiving a sample for centrifugation;
• and,
• at least one bearing for mounting said rotor for rotation with respect to said stator.

In a centrifuge having:

• a rotor for containing at least one sample to be centrifuged;
• at least one bearing for supporting and rotating said rotor;
• and,
• stator means for generating a rotating magnetic field to rotate said rotor on said bearing to centrifugate said sample;
• the improvement comprising:
• a rotor defining a vertical axis and having a vertically extending, internal circumferential surface positioned opposite and surrounding the stator for fitting over said stator and rotating said at least one sample to be centrifugated peripherally about said stator;
• and,
• means attached to said rotor for coupling to said rotating magnetic field of said stator.

In a centrifuge having:

• a single central stator for producing a rotating magnetic field;
• a rotor for containing at least one sample to be centrifuged;
• means to incorporate permanent magnets into said rotor to rotate with said rotating magnetic field;
• and,
• at least one bearing for supporting and rotating said rotor;
• the improvement to said rotor comprising:
• a rotor defining a vertical axis and having a vertically extending, internal circumferential surface positioned opposite and surrounding the stator.