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| Number | Title | Issue Date |
| 7467929 | Device for axially conveying fluids A device for axially conveying fluids, wherein the conveyor part thereof is entirely magnetically borne and the radial bearing thereof is provided with sufficient rigidity and efficiently dampened, whereby problems encountered when passing through critical speeds an... | 12/23/2008 |
| 7285887 | Axial magnetic bearing apparatus Axial magnetic bearing apparatus in which a rotary disc made of a magnetic material is fixedly attached to a rotating shaft, while a pair of electromagnetic stators in each of which a ring-like electromagnetic coil for generating magnetomotive force is inserted into... | 10/23/2007 |
| 7057319 | Magnetic bearing device stably carrying a rotary shaft, program for executing a computer to control the magnetic bearing stably carrying the rotary shaft and computer-readable record medium storing the program A control device estimate a magnitude of a load applied to a magnetic bearing by processing a current instruction (Iref) issued by itself with a low-pass filter. The control device changes a control model in feedback control of the magnetic bearing in accordance wit... | 06/06/2006 |
| 7040872 | Rotary fluid machinery Pistons (41) are slidably received in a plurality of cylinders (39) disposed radially in a rotor (31), and a plurality of vanes (42) cooperating with the pistons (41) are disposed radially in the rotor (31), so that a vane c... | 05/09/2006 |
| 6464472 | Circulation fan apparatus and circulation-fan driving motor A circulation fan apparatus including a hermetic vessel 1 containing a corrosive process gas therein, and a circulation fan 2 installed in the hermetic vessel, rotors 2-1, 2-2 of the circulation fan are rotatably supported by bearings, wherein the bearing... | 10/15/2002 |
| 5641276 | Electric pump for environmentally hazardous material An electric pump includes an impeller, a shaft and a motor having at least one permanent magnet rotor and a stator. The impeller is coupled by the shaft to the at least one permanent magnet rotor of the electric motor. A hermetically sealed housing is pro... | 06/24/1997 |
| 4437814 | Dredge pump drive system In a dredge pump having a pump housing and an impeller in the housing, an impeller shaft projects through and beyond the housing in both directions. Two drive motors, one coupled rigidly to one end of the shaft and the other, to the other end, to drive th... | 03/20/1984 |
