Patent ID: 8452377

Claim:
Coil arrangement for contact-free guidance of a magnetic object having a magnetic dipole moment in a workspace in a Cartesian coordinate system with three axes comprising a horizontal first axis, a horizontal second axis, and a vertical third axis, said coil arrangement comprising: exactly eleven individual coils that are: two first coil pairs, wherein one of the first coil pairs is associated with the first axis and the other of the first coil pairs is associated with the third axis; a single first individual coil that is associated with the second axis; a second coil pair that is associated with the first axis and is arranged in a plane that is spanned by the first and third axes; and two second coil pairs that are associated with the third axis and that are arranged essentially perpendicular to one another in planes, wherein one of the planes is spanned by the first and third axes and the other of the planes is spanned by the second and third axes; and at least one activation unit that controls current feed to the individual coils.