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Class Information
Number: 464/180
Name: Rotary shafts, gudgeons, housings, and flexible couplings for rotary shafts > Shafting > Particular vibration dampening or balancing structure
Description: Subject matter wherein significance is attributed to structure associated with the shaft for the purpose of minimizing unwanted vibrations during torque transmission or for providing a desirable balance to the shaft structure.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11

Patent Number Title Of Patent Date Issued
8672107 Compact vibration damper Mar. 18, 2014
8668593 Shaft with shoulder and groove Mar. 11, 2014
8601993 Engine balancer device Dec. 10, 2013
8591344 Arrangement with a mass damper for canceling out torsional vibrations of a shaft Nov. 26, 2013
8562449 Breathing mode damper Oct. 22, 2013
8556738 Apparatus comprising a shaft and a balancing sleeve Oct. 15, 2013
8556739 Main shaft for a transmission or countershaft for a transmission Oct. 15, 2013
8465374 Damping system and method for eliminating torsion vibrations Jun. 18, 2013
8454449 Drive shaft with array tuned absorber Jun. 4, 2013
8419887 Composite structural member and method for producing the same Apr. 16, 2013
8376868 Rotation shaft vibration damping mechanism Feb. 19, 2013
8376866 Unbalance correction device of propeller shaft Feb. 19, 2013
8323118 Dynamic damper for hollow rotating shaft Dec. 4, 2012
8307802 Mass balance unit Nov. 13, 2012
8303255 Shaft trim balancing devices, related systems and methods Nov. 6, 2012
8287390 Damper assembly with engine-side cover plate directly connected to engine crankshaft and powertrain having same Oct. 16, 2012
8276561 Axial thrust washers partially for unbalance shafts Oct. 2, 2012
8226523 Structure for supporting a sleeve member in automatic transmission Jul. 24, 2012
8167730 Tuned absorber May. 1, 2012
8156914 Balancer of engine, engine, and outboard motor Apr. 17, 2012
8157543 High-speed rotating shaft of supercharger Apr. 17, 2012
8136621 Dual-tuned vibration damper Mar. 20, 2012
8140230 Apparatus and method for regulating active driveline damping in hybrid vehicle powertrain Mar. 20, 2012
8096278 Compensation shaft of an internal combustion engine Jan. 17, 2012
8057315 Shaft assembly Nov. 15, 2011
8051824 Shaft Nov. 8, 2011
7997989 Balanced driveshaft assembly and method Aug. 16, 2011
7946925 Dynamic damper May. 24, 2011
7942229 Dual-tuned vibration damper and method for damping vibrations in a power transmission system using a dual-tuned vibration damper May. 17, 2011
7922593 Driveshaft assembly Apr. 12, 2011
7914383 Mechanical transmission system with a magnetic damper for a rotorcraft Mar. 29, 2011
7906191 Wavy composite structures Mar. 15, 2011
7871091 Steering damper apparatus and damper apparatus Jan. 18, 2011
7862056 Steering gear inertia damper Jan. 4, 2011
7810412 Gearbox Oct. 12, 2010
7806774 Magnetically-damped supercritical transmission system Oct. 5, 2010
7749086 Propeller shaft Jul. 6, 2010
7727073 Coupling plate for engine-driven generator Jun. 1, 2010
7717013 Rotating machine active balancer and method of dynamically balancing a rotating machine shaft with torsional vibrations May. 18, 2010
7713132 Propeller shaft May. 11, 2010
7690084 Structure of anti-vibrating rotation shaft Apr. 6, 2010
7681559 Torsion damping mechanism for a supercharger Mar. 23, 2010
7654907 Apparatus for damping the torsional excitation of a drive shaft Feb. 2, 2010
7597029 Damper assembly with reinforcing plate Oct. 6, 2009
7549927 Tunable damper for a torque transferring assembly Jun. 23, 2009
7548712 Image forming apparatus, drum unit, image forming module, and method of insertion and removal of a damper into and from an image carrier drum Jun. 16, 2009
7543678 Floating torque tube propeller shaft assembly Jun. 9, 2009
7537524 Coupling of driver/driven shafts of a motor and thrust isolation May. 26, 2009
7533756 Propshaft assembly with anti-node damping insert May. 19, 2009
7510464 Vibration damping device, in particular for an electric hand machine tool, and a transmission equipped with such a vibration damping device Mar. 31, 2009

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