Magnetic bearing system
Axial electromagnetic bearing for smooth shafts of large diameter
Radial displacement magnetic detector device for a rotor
Magnetostrictive vibration wave position detecting apparatus with variable threshold detecting valves
Air purification and temperature controlling system and method Patent #: 4732579
ApplicationNo. 07/139189 filed on 12/29/1987
US Classes:310/90.5, Magnetic bearing104/281, MAGNETICALLY SUSPENDED CAR324/207.16, Electrically energized324/207.24, Linear324/207.26Approach or retreat
ExaminersPrimary: Skudy, R.
Attorney, Agent or Firm
International ClassesF16C 39/00 (20060101)
F16C 39/06 (20060101)
AbstractAn electromagnetic suspension system for suspending a platform element with respect to a base element includes electromagnetic isolator/actuators, having a permanent magnet with a pole gap between the magnetic poles, and a coil having turns of electrically conductive material. The coil and permanent magnet are positioned so that at least a portion of each of the coil turns is within the pole gap of the permanent magnet, with the portion being aligned substantially perpendicularly to the polar axis of the permanent magnet. When electric current is applied to the coil, an electromagnetic force is generated between the coil and the permanent magnet. This force is proportional to the current and substantially independent of relative velocity of motion between the coil and the magnet.