Ringfeder Power-Transmission GmbH

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F16D COUPLINGS FOR TRANSMITTING ROTATION 289
 
  
 
F16F SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION257
 
  
 
F16B DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING 148
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 1106

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9624982 Hollow shaft couplingApr 17, 14Apr 18, 17[F16D]
9206857 Compensating coupling for transmitting torquesOct 04, 12Dec 08, 15[B23P, F16D]
9059627 Permanent magnet couplingDec 02, 10Jun 16, 15[H02K]
8727657 Hollow shaft couplingNov 12, 09May 20, 14[F16B]
6669183 Spring element of elastic materialNov 21, 01Dec 30, 03[F16F]
6274211 Kinetic energy absorbing elementAug 20, 99Aug 14, 01[F16F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2013/0170,903 SHRINK DISCAbandonedAug 31, 11Jul 04, 13[F16D]
2012/0280,586 PERMANENT MAGNET COUPLINGAbandonedJan 19, 11Nov 08, 12[H02K]

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