| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 074574400 | Damping by absorbing vibration force (via rubber, elastomeric material, etc.) | 36 |
| 20080282837 | Torque transmission device - A torque transmitting unit for inclusion in the drive train of a motor vehicle. The unit transmits torque between an engine having an output shaft and a transmission having at least one input shaft that is drivingly coupled with the engine by a clutch and a intermediate torsional vibration damper. The torque transmitting unit includes primary and secondary flywheel masses that are mounted on the transmission input shaft along with the clutch. | 11-20-2008 |
| 20090000421 | COMPRESSED HUB DAMPER - A torsional vibration damper includes front and rear hub members with an inertia mass between the two hub members. Annular elastomeric rings are positioned between the front and rear hub members and the inertia mass holding the inertia mass. Fasteners extend through the front hub member, the inertia mass, and fixed to the rear hub member. A clearance between the fastener and the inertia mass allows relative motion to absorb torsional vibration. | 01-01-2009 |
| 20090000422 | RECESSED BELT DAMPER - A torsional vibration damper includes an inertia mass and a rotating shaft or hub with an elastomeric ring between the inertia mass and the rotating shaft or hub. A large portion of said elastomeric member is located in a channel located either in the inertia mass or in the hub. This allows one to achieve high contact pressure without creating a significant fatigue on the elastomeric member. This can be used with either a crankshaft damper or an internal or external drive shaft damper. | 01-01-2009 |
| 20090078078 | DECOUPLED VIBRATION DAMPER - A torsional vibration damper includes a one-piece integral hub and annular inertia mass assembly. Between the hub and the inertia mass are intermediate rings connected integrally with the mass and the hub connected integral spokes. Elastomeric members are compression fitted within spaces formed between the hub and the mass. | 03-26-2009 |
| 20090078079 | DECOUPLED VIBRATION DAMPER - A torsional vibration damper includes a one-piece integral hub and annular inertia mass assembly. Between the hub and the inertia mass are intermediate rings connected integrally with the mass and the hub connected integral spokes. Elastomeric members are compression fitted within spaces formed between the hub and the mass. With this design, the damper can be formed from a polymeric material with an embedded annular weight. | 03-26-2009 |
| 20090145261 | Single mass dual mode crankshaft damper with tuned hub - A damper for attachment to a crankshaft of an engine is provided. The damper has a hub member, an inertia member spaced radially outward from the hub member and an elastomer positioned between the hub member and the inertia member. The hub member has an opening for attachment to the crankshaft and extends at an angle away from the opening such that the inertia member is offset from the opening of the hub member. The offset inertia member prevents amplification of noise from the crankshaft. The elastomer has a curvature to improve dampening of bending vibrations. | 06-11-2009 |
| 20100139450 | Dual mass clutch flywheel and clutch, and a method for manufacturing such dual mass clutch flywheel - In order to realize an idling disengagement by simple structural means in a dual mass clutch flywheel, a separation is provided between the damper system and spring system of a torsional vibration damper in this dual mass clutch flywheel. | 06-10-2010 |
| 20110011199 | DAMPED ROTARY ENCODER - A tuned damped absorber arrangement is used to attenuate the response of an encoder. A vibration problem occurs on rotary axis heads which are used in machining operations. When using long slender tools, a vibration can be created which causes the encoder to lose its position. The device uses a tuned damped absorber that is attached to the input shaft of the encoder to dampen unwanted vibration. | 01-20-2011 |
| 20110162480 | TORQUE TRANSMISSION UNIT - A torque transmission unit which has a first centrifugal mass that can be non-rotatably associated with an internal combustion engine and a second centrifugal mass that is connected downstream of the first mass and can be associated with a transmission. The second centrifugal mass has a rotor of an electric machine for transmitting a torque that can be electrically generated to the second centrifugal mass and a centrifugal force pendulum for reducing torsional vibrations. | 07-07-2011 |
| 20110314958 | TUNABLE MASS DAMPER FOR USE WITH A REACTION WHEEL ASSEMBLY - A tunable mass damper (TMD) is provided that can be coupled to a rotating inertia apparatus such as a reaction wheel assembly (RWA). The TMD includes a housing that contains a flexure, a mass, and damping fluid within the housing. The housing is coupled to the flexure, and the flexure is coupled to the mass. The mass is free to sway in the damping fluid. The damping fluid envelops the mass and provides damping between the mass and the housing. At least one of the mass, flexure and the damping fluid can be adjusted to tune the TMD to produce a resonance at or near a mode that is to be mitigated by the TMD such that it operates at a desired or optimal operating frequency. | 12-29-2011 |
| 20120031225 | FLEXIBLE FLYWHEEL - The invention relates to a flexible flywheel ( | 02-09-2012 |
| 20120031226 | CENTRIFUGAL FORCE PENDULUM - A centrifugal force pendulum arranged on a rotatable pendulum flange, for example, in the drive train of a motor vehicle. Pendulum masses, which can be moved to a limited extent in the radial direction and circumferential direction during the deflection thereof, are provided at the sides of the pendulum flange, for example, mutually opposing each other. Said opposing pendulum masses are fastened to each other by a connecting element, forming a pendulum mass pair. A bearing is disposed on the connecting element. | 02-09-2012 |
| 20120085198 | SELECTABLE MASS FLYWHEEL - A selectable mass flywheel assembly for a powertrain of a motor vehicle includes a first mass and a second mass. The first mass is connected to a crankshaft of an engine and the second mass engages with a clutch to transfer torque from the engine to a transmission. The two masses are rotationally coupled to each other with a spring and damper assembly. The flywheel assembly further includes a locking mechanism that engages both masses during the startup of the engine to lock the two masses together to minimize the vibrations and pulsations in the powertrain during startup of the engine. | 04-12-2012 |
| 20120192673 | ARRANGEMENT WITH A MASS DAMPER FOR CANCELING OUT TORSIONAL VIBRATIONS OF A SHAFT - An arrangement having a gear side and a shaft side includes a shaft. A first flange is disposed on the gear side. A second flange is disposed on the shaft side. A mass damper is attached between the first flange and the second flange and including a damper ring, a hub and an elastomer layer disposed between the damper ring and the hub. | 08-02-2012 |
| 20130068065 | RECESSED BELT DAMPER - A torsional vibration damper includes an inertia mass and a rotating shaft or hub with an elastomeric ring between the inertia mass and the rotating shaft or hub. A large portion of said elastomeric member is located in a channel located either in the inertia mass or in the hub. This allows one to achieve high contact pressure without creating a significant fatigue on the elastomeric member. This can be used with either a crankshaft damper or an internal or external drive shaft damper. | 03-21-2013 |
| 20130081511 | TORQUE FLUCTUATION ABSORBER - A torque fluctuation absorber includes a drive plate configured to rotate integrally with a crankshaft of an internal combustion engine, a center plate, a side plate, an elastic member for absorbing torque fluctuations, and a block member configured to be engaged with the drive plate and attached to the side plate, wherein the side plate includes plural accommodation portions accommodating the elastic member, and at least one of a recessed portion and a first window portion which are provided at a position corresponding to a position of the block member, and the block member is attached to a portion of the side plate between adjacent accommodation portions in a circumferential direction of the side plate. | 04-04-2013 |
| 20130081512 | TORQUE FLUCTUATION ABSORBER - A torque fluctuation absorber includes a center plate rotatably arranged, a side plate arranged coaxially with and rotatably relative to the center plate, an elastic member accommodated in a space surrounded by the side plate and absorbing torque fluctuations generated between the side plate and the center plate, a cover member separating the space and an outside space from each other by covering a clearance between the center plate and the side plate, and a vent portion arranged inwardly in a radial direction of the side plate relative to the cover member and providing a ventilation between the space and the outside space. | 04-04-2013 |
| 20130139641 | Torsion Vibration Damper Assembly And Vibration Damper Device, In Particular In A Torsion Vibration Damper Assembly - A torsional vibration damper arrangement includes a vibration damper device ( | 06-06-2013 |
| 20130152730 | Dual Mass Flywheel Assembly - The present invention discloses a dual mass flywheel assembly, characterized in that: a bidirection limit gap bridge bearing is provided between said flywheel disc hub and flywheel driving disc; in said bidirection limit gap bridge bearing, the outer cover thereof is fixedly connected with the inner end of the flywheel disc hub, and the inner cover thereof is fixedly connected with the flywheel driving disc. The vehicle with the dual mass flywheel assembly may enable a continuous and more stable gearshift, and upon speeding up, the dual mass flywheel assembly may further provide the function of buffering and damping, thus the service life is extended and the running safety is improved. | 06-20-2013 |
| 20130291677 | TORSIONAL VIBRATION DAMPER WITH NONUNIFORM ELASTOMER PROFILE - A Torsional Vibration Damper includes a hub, a ring, and a rubber member that is compression fitted between the outer surface of the hub and the inner surface of the ring. The cross-sectional profile of the outer surface of the hub and the inner surface of the ring after the assembly of the TVD consists of two concave or convex arcs with their radii such that the cross-sectional profile's gap increases from the center to the sides. This variation of the cross-sectional profile's gap reduces the principal-strain buildup in the rubber, thereby improving the life of the Torsional Vibration Damper. This design also facilitates proper assembly as the components are self aligning. | 11-07-2013 |
| 20130298725 | TORQUE FLUCTUATION ABSORBING APPARATUS - A torque fluctuation absorbing apparatus comprises a first plate member, a second plate member disposed at a position axially offset from the first plate member, an intermediate plate member that is disposed between the first plate member and the second plate member and has a frictional sliding surface mating with the second plate member, rolling elements disposed so as to roll between the intermediate plate member and the first plate member, and resilient member that allows the intermediate plate member and the first plate member to rotate relative to each other. The intermediate plate member and the first plate member have acting sections on a surface whereon at least one of the rolling elements rolls, the acting sections press the intermediate plate member against the second plate member by a relative rotation between the intermediate plate member and the first plate member. | 11-14-2013 |
| 20140041478 | DAMPER FOR INPUT SHAFT OF TRANSMISSION - A damper apparatus for an input shaft of a transmission, may include a flywheel having a reception space in which a inertial body may be provided so as to be rotatable relative to the flywheel, the input shaft extending into the reception space of the flywheel, and an inertial body assembly slidably coupled to the input shaft so as to provide rotational inertial force to the input shaft, the inertial body assembly being disposed in the reception space. | 02-13-2014 |
| 20140041479 | TORSIONAL VIBRATION DAMPER - A torsional vibration damper for transferring torque between a first and a second rotatable element, having a rotatable pressure plate to transfer the torque from the first element, a rotatable output element to transfer the torque to the second element, and a vibration damper element to transfer the torque between the pressure plate and the output element, where the vibration damper element includes an energy-storing spring system. A driving element is formed in a single piece on the pressure plate to fit against the spring system. | 02-13-2014 |
| 20140076100 | TORSIONAL VIBRATION DAMPER - A torsional vibration damper has a drive-side transmission element; a damping device having a plurality of energy accumulators; a driven-side transmission element configured to be rotationally deflected coaxial to the drive-side transmission element and which is connected to the drive-side transmission element via the damping device; and sliding elements arranged in one of the drive-side transmission element and driven-side transmission element so as to be movable in a circumferential direction. The sliding elements have: (i) circumferential projections for the energy accumulators, these circumferential projections being directed toward adjacent sliding elements, and/or (ii) penetration spaces for circumferential projections provided at the adjacent sliding element. The energy accumulators are supported at the sliding elements, the sliding elements having in sequence in an axial direction at least one circumferential projection and/or at least one penetration space at their circumferential side which faces a sliding element adjacent in the circumferential direction. | 03-20-2014 |
| 20140109720 | HYBRID DRIVETRAIN HAVING ACTIVE TORSIONAL VIBRATION DAMPING, AND METHOD FOR CARRYING OUT THE ACTIVE TORSIONAL DAMPING - A drivetrain having an active torsional vibration damping and a method for carrying out the active torsional vibration damping, having an internal combustion engine being affected by torsional vibrations and having a crankshaft, a torsional vibration damper that is operatively connected to the crankshaft and has at least one operating point of low vibration isolation of the torsional vibrations and has a primary inertial mass associated with the crankshaft and an inertial mass associated with a gear input shaft of a gearbox, the inertial mass being rotatable relatively and limitedly with respect to the primary inertial mass against the action of a spring device. The drivetrain also includes an electric motor having a rotating mass operatively connected to the gearbox input shaft, and a control unit, the spring device being formed by linear springs, the rotating mass of the electric motor being designed as a secondary inertial mass. | 04-24-2014 |
| 20140157947 | APPARATUS FOR DAMPING OF FLYWHEEL - An apparatus for damping of a flywheel, which is configured so that a second mass may rotate in a direction for offsetting torsional vibration of an engine transmitted to a first mass through a damping spring. The apparatus includes: guides disposed between damping springs and guiding the damping springs extending/contracting in a rotational direction by a damping operation; and a third mass arranged coaxially with the second mass, with one end connected to the guide, and relatively rotating in a direction for offsetting torsional vibration of the engine transmitted to the second mass. | 06-12-2014 |
| 20140202278 | DYNAMIC DAMPER DEVICE - A dynamic damper device includes a damper mass device in which a damper mass is coupled by way of an elastic body to a rotation shaft of a power transmitting device capable of gear shifting a rotation power by a main transmission and transmitting the power to a drive wheel of a vehicle, and a damper transmission that is arranged on a power transmission path between the elastic body and the damper mass and that gear shifts the rotation power transmitted to the damper mass at a gear ratio corresponding to a gear ratio of the main transmission, wherein the damper mass device can accumulate the rotation power transmitted to the damper mass as inertia energy. Therefore, the dynamic damper device has an effect of achieving both reduction in vibration and improvement in fuel economy performance. | 07-24-2014 |
| 20140260782 | Dampers For Crankshafts Of Reciprocating Engines and Reciprocating Engines Comprising The Same - A damper for a crankshaft of a reciprocating engine includes an inner shell and an inertia ring, the inner shell and the inertia ring having a plurality of teeth and grooves that are intermeshed with one another. The damper further includes a plurality of damping pads positioned between the teeth of the inner shell and the grooves of the inertia ring. The inertia ring is constrained from translating in the axial direction and the radial direction with respect to the inner shell and is rotatable with respect to the inner shell in the circumferential direction through a constrained range by compressing the damping pads. | 09-18-2014 |
| 20140360312 | POWERTRAIN MECHANISM FOR VEHICLES WITH INTERNAL COMBUSTION ENGINE - A powertrain mechanism comprising a carrier plate connected to the crankshaft, a drive plate connected to the gearbox shaft and at least one spring positioned between at least one first spring housing provided on the carrier plate and at least one spring housing provided on the drive plate, in order to transfer the torque, obtained from the crankshaft, to the gearbox shaft in vehicles having internal combustion engine. | 12-11-2014 |
| 20150007687 | TORSIONAL VIBRATION DAMPER - A torsional vibration damper is provided that is capable of increasing torsional rigidity without increasing a size of an elastic member in a radial direction. A torsional vibration damper includes a boss member and a disk plate provided coaxially with each other; an elastic member being elastically deformable in a rotation direction of the boss member; a cam member rotating integrally with the boss member; a torque transmission member transmitting rotation torque between the boss member and the disk plate; and a socket member provided between the torque transmission member and the elastic member and having a contact surface coming in contact with the torque transmission member. The torque transmission member is capable of entirely reciprocating in a radial direction of the boss member in accordance with rotation of the cam member, and elastically compresses the elastic member when it moves outward in the radial direction of the boss member. | 01-08-2015 |
| 20150047459 | ROTATOR DRIVING SYSTEM AND IMAGE FORMING APPARATUS WITH SAME - A rotator driving system for driving a rotator with a motor includes a dynamic vibration absorber attached to a rotary shaft of the rotator. The dynamic vibration absorber includes an inertia body, a viscosity-providing component to provide a viscosity, and a torsion spring unit to function as a torsion spring that includes a boss fixed to the rotary shaft. Multiple spokes extend radially outward from the boss. Multiple seats are provided at respective tips of the multiple spokes to fix the inertia body. The torsion spring unit is fixed by both the rotary shaft of the rotator and the boss fixed to the rotary shaft therebetween. The viscosity-providing component supports the inertia body via the multiple seats provided at the respective tips of the multiple spokes. | 02-19-2015 |
| 20150316122 | HARMONIC BALANCER WITH REDUCED AXIAL LENGTH - A harmonic balancer assembly is provided including a drive plate adapted to be attached to a crankshaft or other drive shaft. A first circumferentially extending elastomeric ring is connected to an axial face of the drive plate. An inertia ring is provided which also includes an axial face that is connected to the first elastomeric ring. A drive element can be connected to or engaged with the inertia ring in order to transmit torque from the drive plate to a further element in a drive train. The inertia ring can be connected to a pulley, a torque converter, or other transmission element in order to, for example, transfer torque from a crankshaft to a further transmission component or to transfer torque to a separate power take off. | 11-05-2015 |
| 20160025184 | LOW FREQUENCY TORSIONAL VIBRATION DAMPER - Torsional vibration dampers are disclosed that include a hub and an inertia member disposed concentric with and spaced radially outward or radially inward from the hub that together define a plurality of pockets therebetween each having a spool-shaped receptacle. A plurality of spool-shaped elastomeric plugs, one each, are seated in the spool-shaped receptacles. When the inertia member is spaced radially outward of the hub, the hub is mountable on a shaft, and when the inertia member is spaced radially inward of the hub, the hub is mountable inside a shaft. Methods of making the torsional vibration dampers are also disclosed. | 01-28-2016 |
| 20160061286 | TORSIONAL VIBRATION DAMPERS HAVING DUAL ELASTOMERIC MEMBERS - Torsional vibration dampers are disclosed that include a monolithic body having an axis of rotation, an innermost annular wall defining a bore therethrough for receiving a shaft, and an outer annular wall concentric about the axis of rotation and spaced radially outward relative to the innermost annular wall, an inertia member concentric about the axis of rotation and positioned radially inward relative to the outer annual wall, the inertia member having an inner surface facing the axis of rotation and an outer surface facing the outermost annular wall, a first elastomer member seated against the inner surface of the inertia member, and a second elastomer member seated against the outer surface of the inertia member and in between the inertia member and the outer annular wall. The first and second elastomer members operably couple the inertia member to the monolithic body for rotation therewith. | 03-03-2016 |
| 20160061287 | APPARATUS FOR A DRIVE SYSTEM HAVING A CARTRIDGE HOUSING ONE OR MORE ELASTOMER MEMBERS - Torsional vibration dampers for FEADs are disclosed that include a hub having a sleeve defining a bore for receiving a shaft and an outer annular ring spaced radially outward from the sleeve, thereby defining an annular receptacle, a component for rotation with the hub having an inner annular ring disposed between the sleeve and the outer annular ring of the hub, and an annular cartridge seated in the annular receptacle between the inner annular ring of the component for rotation with the hub and the sleeve or outer annular ring of the hub. The annular cartridge defines a first annular groove having a generally C-shaped or U-shaped cross-sectional profile open radially outward, and has a first elastomer member seated therein in compression, thereby operatively coupling the component for rotation with the hub to the hub. The component may be a pulley body or an inertia member. | 03-03-2016 |
| 20160084342 | ARC COIL SPRING CONFIGURATION - Improved performance of arc coil springs by stress reduction when they are bottomed out is achieved by forming the coil spring wire in a substantially trapezoidal or other shape such that when bottomed, the side surfaces of the coil abut and carry the bottoming load which is distributed over a comparatively large surface area. The angles of the sidewalls of the substantially trapezoidal cross section wire are preferably coincident with lines of radius when the spring is installed in an arc in a clutch, damper or flywheel. The radius of the outer surface of the arc coil spring wire is matched to the radius of the inner surface of the guide or housing so that the area of contact is large, thereby distributing the outwardly directed spring force over a large area, reducing the force per unit area and improving lubrication retention on the contacting surfaces. | 03-24-2016 |
