SOCIETE DE MECANIQUE MAGNETIQUE

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F04D NON-POSITIVE-DISPLACEMENT PUMPS470
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 359
 
  
 
F01D NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES 263
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 1106
 
  
 
H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS 186
 
  
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 1155

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9534506 Reducing the influence of thermal expansion of connector pins on a substrate in a vacuum pumpJul 28, 11Jan 03, 17[F04B, F04D, F01D, H05K]
9267392 Vacuum pumpJul 28, 11Feb 23, 16[F04D, F01D]
9093938 Motor driver circuit and vacuum pump having the motor driver circuitJun 01, 09Jul 28, 15[H02P, F04B, F04D]
6350109 Rotary pump with immersed rotorMar 10, 00Feb 26, 02[F04B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2013/0343,927 ELECTRIC CENTRIFUGAL COMPRESSOR FOR VEHICLESAbandonedJun 24, 13Dec 26, 13[F04D]
6927517 Rotary machine with axial stop incorporating a current generatorExpiredNov 16, 01Aug 09, 05[H02K]
2004/0189,126 Modular system for suspending and rotating a rotary shaftAbandonedMar 05, 04Sep 30, 04[H02K]
5126612 Active radial magnetic bearing combined with a back-up bearingExpiredApr 24, 90Jun 30, 92[H02K]
5111697 Large-amplitude low-frequency vibratorExpiredFeb 12, 91May 12, 92[H02K, G01N]
4982126 Auxiliary bearing having a graphite stator for a rotary shaft mounted on magnetic bearingsExpiredMar 31, 89Jan 01, 91[H02K]
4976177 Workpiece-carrier spindle assembly having magnetic bearings, and a device implementing such an assembly for a very high precision machine toolExpiredAug 31, 88Dec 11, 90[B23B, F16C]
4947067 Vibrator/dampener having magnetic suspension and servo-control along three axesExpiredApr 06, 89Aug 07, 90[H02K, B06B, G05B, F16C]
4928561 Method and apparatus for ultra-precise machining applied to executing atypical surfaces of revolution and to servo-controlled machiningExpiredAug 31, 88May 29, 90[F16C]
4929158 Turbopump with actine suspension for a propulsion systemExpiredMar 30, 88May 29, 90[F04B]
4866318 Active radial magnetic bearing with solid rotor for damping critical frequenciesExpiredDec 08, 87Sep 12, 89[F16C]
4827169 Hybrid fluid bearing with stiffness modified by electromagnetic effectExpiredDec 21, 87May 02, 89[H02K, G05B]
4806835 Electromagnetic device for reducing vibration in a rotary machine fitted with fluid bearingsExpiredDec 21, 87Feb 21, 89[G05B]
4720649 Large diameter radial magnetic bearingExpiredAug 08, 86Jan 19, 88[F16C]
4626754 Method and device for reducing the vibrations of rotating machines equipped with an active magnetic suspensionExpiredMar 20, 85Dec 02, 86[G05B]
4308490 Device for compensating the gain of a servo-controlled circuit by negative current feedbackExpiredFeb 15, 79Dec 29, 81[G05D]

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