| SOCIETE DE MECANIQUE MAGNETIQUE Patent applications |
| Patent application number | Title | Published |
|---|
| 20110176910 | Turbomolecular Pump with a Flexible Mount - The flexibly-mounted turbomolecular pump comprises a leaktight casing mounted on a structure via a mechanical damper, a vertical support driven by an electric motor, radial magnetic bearings, an axial magnetic bearing, radial detectors, an axial detector, an emergency mechanical bearing, and a control module comprising power supply circuits and servo-control circuits for the axial and radial magnetic bearings. The servo-control circuits present low stiffness and include filter circuits for defining a limited passband. The control module comprises a comparator unit for detecting abnormally large movements of the rotor from signals delivered by the axial and radial detectors, which movements are greater than predetermined thresholds. The servo-control circuits include a restabilization network and a unit for selectively activating the restabilization network during a predetermined duration after a time at which the crossing of at least one of the predetermined thresholds is detected during a movement of the rotor. | 07-21-2011 |
| 20110001377 | CANNED OR SLEEVED ROTARY MACHINE AND METHOD OF MANUFACTURING IT - A canned or sleeved rotary machine is equipped with a rotor ( | 01-06-2011 |
| 20100295395 | OVERMOULDED OR CANNED ELECTRICAL MACHINE - The rotary electric machine comprises at least one piece of electric equipment constituted by an overmolded or jacketed electric motor or by an overmolded or jacketed magnetic suspension system. The electric equipment comprises firstly a rotor ( | 11-25-2010 |
| 20100187926 | JACKETED AXIAL MAGNETIC BEARING - The invention relates to a jacketed axial magnetic bearing for a rotary machine having a rotor in contact with a gaseous atmosphere that is corrosive, acid, or carrying particles, the bearing comprising a rotor armature in the form of a disk secured to the rotor and placed in the gaseous atmosphere, and a stator magnetic circuit secured to a stationary support device and placed facing the rotor armature, the magnetic circuit of the stator comprising at least one coil and a ferromagnetic body placed in a metallic protective enclosure. The protective enclosure comprises firstly an annular support of channel section with a web and inner and outer flanges presenting a thickness of several millimeters and a length that is less than the length of the stator magnetic circuit, and secondly an annular jacket in the form of a channel-section cover machined from a solid piece and thus without welds, the jacket having inner and outer flanges and a closure web presenting a thickness smaller than the thicknesses of the inner and outer flanges, the free ends of the inner and outer flanges of the jacket being welded to the free ends of the inner and outer flanges of the annular support. | 07-29-2010 |
| 20100021100 | EMERGENCY ROLLING BEARING THAT IS INSENSITIVE TO AXIAL LOAD - The emergency rolling bearing for a rotary machine having magnetic bearings comprises at least first and second bearing members with radial clearance of value ε | 01-28-2010 |
