Class / Patent application number | Description | Number of patent applications / Date published |
188267000 | Using magnetic flux | 40 |
20080257667 | Device For Decoupling an Attachment From a Moving Machine Element - The invention relates to a device for decoupling an attachment ( | 10-23-2008 |
20090020381 | VIBRATION ISOLATORS AND ISOLATION SYSTEMS - In an embodiment, and by way of example only, a vibration isolator is used for coupling between a payload and a base and includes a rod, a magnetic damper, a first spring, and a second spring. The magnetic damper includes a movable section and stationary section. The movable section comprises a conductive material and has an opening through which the rod extends. The stationary section includes a magnet disposed around and spaced apart from the movable section and is coupled to the base. The first spring couples the movable section to the rod. The second spring is coupled to the rod and stationary section. In another embodiment, the vibration isolator also includes a voice coil actuation system. | 01-22-2009 |
20090095584 | DAMPER - A damper is comprised of an actuator (A) connected to a sprung member (B) side of a vehicle, the actuator (A) including a motion converting mechanism (T) for transforming a linear motion into a rotational motion and a motor (M) to which the rotational motion resulting from the transformation by the motion converting mechanism (T) is transmitted; a hydraulic damper (E) including a cylinder (C), a piston (P) inserted slidably into the cylinder (C) and defining two pressure chambers within the cylinder (C), and a rod (R) connected at one end thereof to the piston (P), wherein a linear motion of the actuator (A) being transmitted to one of the rod (R) and the cylinder (C) while the other of the rod (R) and the cylinder (C) being connected to an unsprung member (W) side of the vehicle; and biasing means ( | 04-16-2009 |
20090120745 | DAMPER - A damper (D) comprises a screw shaft ( | 05-14-2009 |
20090152060 | MAGNETIC RESISTOR CONTROL ASSEMBLY - A magnetic resistor control assembly for a body training machine comprises a main shaft; a rotor, a stator, an adjusting unit, a sliding block set and a controller. An inner disk and an outer disk clamp of the stator clamping the adjusting unit. The sliding block set has guide tracks, an outer lateral wall of each guide track having a track trench. A lower middle portion of the sliding block set has a round hole; the roller being installed and rollable in the guide track; and the retaining rod of the roller is placed within the track trench. A controller is installed at an outer side of the stator; the controller having a transfer pin which displace in the straight grooves. When the transfer pin drives the sliding block set to move in the straight grooves, the gap between permanent magnets and the magnetic isolation ring is changed. | 06-18-2009 |
20090178892 | Method and Device for Damping Vibrations - The invention relates to a method for damping vibrations on chassis bearings of motor vehicles, and a device for implementing the process. A process and a device are to be presented with which outstanding vibration damping and vibration isolation and noise insulation can be achieved over a wide frequency range with consideration of the driving states and roadway conditions which occur in motor vehicles. For this purpose it is proposed that the driving state of the motor vehicle and/or the roadway conditions are detected by way of sensors and that the at least one chassis bearing is modified to different characteristics to change its stiffness and/or damping depending on the detected parameters. The device is formed with sensors for detecting the driving state of the motor vehicle and for roadway conditions, with an electronic control device for processing the acquired signals and for selection of various controllable characteristics and at least one chassis bearing, the stiffness and/or damping of which can be modified. | 07-16-2009 |
20090236192 | SHOCK ABSORBER - The shock absorber includes N magnets arranged such that like poles of adjacent magnets face each other to generate repulsive force, where N is an integer of at least 2; and a magnet holder that accommodates the N magnets such that a distance between the adjacent magnets is variable, whereby the shock absorber absorbs a shock applied to two end magnets disposed at respective ends of the N magnets. | 09-24-2009 |
20090301829 | METHOD FOR USING AN ELECTROMAGNETIC RETARDER - A method for using an electromagnetic retarder of the type that comprises a current generator. The method relates to an electromagnetic retarder including a stator bearing the primary coils ( | 12-10-2009 |
20100122881 | SYSTEM COMPRISING MAGNETICALLY ACTUATED MOTION CONTROL DEVICE - A system that includes a magnetically actuated motion control device comprising a housing defining a cavity and including a slot therethrough. A movable member is located within the cavity and is movable relative to the housing. A magnetic field generator located on either the housing or the movable member causes the housing to press against the movable member to develop a friction force. | 05-20-2010 |
20100200343 | ELECTROMAGNETIC SHOCK ABSORBER FOR VEHICLE - An electromagnetic absorber ( | 08-12-2010 |
20100294603 | BRAKE WITH FIELD RESPONSIVE MATERIAL - A controllable brake with a shaft having an axis of rotation and a shaft end. The controllable brake including a controllable brake rotor connected with the shaft, the rotor having a rotation plane. The controllable brake includes a controllable brake magnetic field generator located proximate the controllable brake rotor, the controllable brake magnetic field generator for generating a controllable magnetic field strength. The controllable brake includes a controllable brake rotating magnetic target integral with the shaft proximate the shaft end, and a controllable brake electronics first electronic noncontacting magnetic sensor having a first sensor plane, the first electronic noncontacting magnetic sensor mounted with the first sensor plane parallel with the controllable brake rotor rotation plane, the first electronic noncontacting magnetic sensor monitoring the rotation of the controllable brake rotating magnetic target and the controllable brake rotor and simultaneously outputting at least two rotational positions of the controllable brake rotor wherein the controllable magnetic field strength generated by the controllable brake magnetic field generator is determined by the rotational positions to control a relative motion of the controllable brake rotor. | 11-25-2010 |
20110127128 | FREQUENCY TUNABLE MAGNETIC DAMPING APPARATUS - A damping apparatus is disclosed comprising at least one pair of magnets and a conducting member. The at least one pair of magnets define a gap therebetween. The conducting member is coupled to a payload and positioned within the gap. The conducting member is configured to vibrate in response to a vibration of the payload. The conducting member comprises a conducting material. Vibration of the conducting member generates eddy currents in the conducting member, and the eddy currents generate a frequency-dependent damping force. The frequency-dependent damping force is adjustable based on the conducting material and a thickness of the conducting member. The conducting material and the thickness are selected to adjust the frequency-dependent damping force. | 06-02-2011 |
20110147146 | ENHANCED DAMPING USING CRYOGENIC COOLING - A damping apparatus is disclosed having at least one magnet, a conducting member movable relative to the magnet, a cryogenic fluid, and a channel that confines the cryogenic fluid in contact with the conducting member. The cryogenic fluid may maintain the conducting member at cryogenic temperatures, thereby increasing a damping force provided by the conducting member to a payload. | 06-23-2011 |
20110214954 | ELECTROMAGNETIC TYPE RETARDER - An electromagnetic type retarder comprises a main portion consisting of a stator having a plurality of magnetic coils arranged along a circle and spaced apart from one another, and of a steel rotor surrounding the stator and rotated according to the rotation of a tire; a driving device for the main portion to be controlled by an operation signal; and an output terminal for an additional device; the magnetic coils consisting of three-phase or two-phase connections. Each of the magnetic coils is connected with a capacitor so as to form a resonance circuit, respectively. The driving device has transistors connected in series to each of the connections and controlled so as to be opened and closed by the operation signal. The revolution speed of a rotary magnetic field generated by AC voltage induced in the magnetic coils forming the resonance circuits by the rotation of the steel rotor is set smaller than the revolution speed of the steel rotor. The AC voltage is applied to an input terminal of the additional device through a timer after a predetermined time from the generation of the operation signal. | 09-08-2011 |
20120037468 | SHOCK ABSORBER - A shock absorber includes a cylinder, at least two magnetic blocks, and a connection rod. The cylinder includes a first end, an opposite second end defining a slide hole, and absorption particles are filled in the slide hole. The at least two magnetic blocks are fit in the slide hole and the proximate end surfaces of two adjacent magnetic block have the same magnetism. The connection rod includes a flange portion and a rod portion. The flange portion defines a receiving hole for receiving one of the at least two magnetic blocks. | 02-16-2012 |
20120118687 | ENHANCED DAMPING USING CRYOGENIC COOLING - A damping apparatus is disclosed having at least one magnet, a conducting member movable relative to the magnet, a cryogenic fluid, and a channel that confines the cryogenic fluid in contact with the conducting member. The cryogenic fluid may maintain the conducting member at cryogenic temperatures, thereby increasing a damping force provided by the conducting member to a payload. | 05-17-2012 |
20120193179 | ELECTROMAGNETIC ACTUATOR WITH INTEGRATED PASSIVE DAMPER - An electromagnetic actuator ( | 08-02-2012 |
20120217105 | ELECTROMAGNETIC SUSPENSION SYSTEM - The present invention provides an electromagnetic suspension system including a casing attachable to a first attachment target member, a movable element, and an armature. One of the movable element and the armature is fixedly disposed in the casing, and the other of the movable element and the armature is movably disposed in the casing. A rod extending in a direction of the relative movement is disposed at the other of the movable element and the armature movably disposed in the casing. The rod extends through a rod guide disposed at the casing to protrude to an outside of the casing, and is configured to be attachable to a second attachment target member. The electromagnetic suspension system further comprises a rotational mechanism allowing a relative rotation between the first attachment target member and the second attachment target member. | 08-30-2012 |
20120267204 | SHOCK ABSORBER - The shock absorber includes N magnets arranged such that like poles of adjacent magnets face each other to generate repulsive force, where N is an integer of al least 2; and a magnet holder that accommodates the N magnets such that a distance between the adjacent magnets is variable, whereby the shock absorber absorbs a shock applied to two end magnets disposed at respective ends of the N magnets. | 10-25-2012 |
20130015026 | Self-Excited Eddy Current Liquid-Cooled RetarderAANM Li; DeshengAACI BeijingAACO CNAAGP Li; Desheng Beijing CNAANM Ye; LezhiAACI BeijingAACO CNAAGP Ye; Lezhi Beijing CNAANM Jiao; BingfengAACI BeijingAACO CNAAGP Jiao; Bingfeng Beijing CNAANM Du; XiaoAACI BeijingAACO CNAAGP Du; Xiao Beijing CN - A self-excited eddy current liquid-cooled retarder is disclosed. The retarder pertains to an auxiliary braking device retarding a vehicle, and comprises a retarder rotor, a retarder stator, a control module and a generator unit. The retarder rotor comprises a retarder coil, an electromagnet core and a core cage. The retarder coil is wound on a coil frame. The electromagnet core is inserted into the coil frame. The electromagnet core, the retarder coil and the coil frame are evenly distributed on the circumference of the core cage. The retarder rotor is connected to a transmission shaft of an automobile. The inner circle of the retarder stator and the outer circle of the electromagnet core of the retarder rotor are coaxial. The generator unit comprises a generator exciting winding, a generator exciting magnetic pole, a generator armature winding and a generator armature core and is received in the retarder rotor. | 01-17-2013 |
20130025986 | ELECTROMAGNETIC SUSPENSION SYSTEM - An electromagnetic suspension system uses a linear motor having coils disposed around the outer periphery of a stator and permanent magnets disposed along the inner periphery of a mover. Wiring is routed through a gap between a first rod and a second rod. Thus, contact between the wiring and the second rod is avoided, and the wiring is protected. Consequently, it is possible to ensure reliability for the electric system of the electromagnetic suspension system. | 01-31-2013 |
20130186721 | MAGNETIC BRAKE - A magnetic brake has an outer stator surrounding an inner stator with a circumferential slot between the outer stator and the inner stator. A coil is provided in the inner stator adjacent to the circumferential slot. A drag plate is attached to a rotatable shaft extending centrally through the inner stator. A drag ring joined to the drag plate extend into the circumferential slot. The drag ring may be an annular cylindrical ring section separate from the drag plate. Vent holes pass through the inner stator adjacent and parallel to the shaft. The magnetic brake uses both hysteresis and eddy current braking. | 07-25-2013 |
20130199881 | ELECTROMAGNETIC BRAKE SYSTEM AND FORCE SENSE IMPARTING TYPE ROTATION INPUT APPARATUS USING THE SAME - A yoke core of an electromagnetic brake system includes a rotation shaft hole portion through which a rotation shaft is penetrated, and additionally includes an inner yoke portion and an outer yoke portion which are arranged on both inner and outer sides, by pinching a concave groove. A coil is accommodated in the concave groove and a magnetic flux is generated by applying electricity to attract an armature. The armature has a penetrating hole portion in the center, and a protruded shaft portion formed on the inner yoke portion is inserted to the penetrating hole portion. The rotation shaft has one side thereof rotatably supported by a support portion of a housing, and the other side thereof rotatably supported by the protruded shaft portion via the armature and a planetary gear mechanism. Accordingly, it is not necessary to provide bearings or the like. | 08-08-2013 |
20130284551 | Power Tool Braking Device - A power tool braking device, in particular a portable power tool braking device, for a portable power tool has at least one magnetic field braking unit. The power tool braking device comprises at least one drive unit which has at least one drive element, on which at least one braking element of the magnetic field braking unit is arranged. | 10-31-2013 |
20130299290 | VIBRATION ISOLATOR - A vibration isolator is provided comprising a base structure, a load structure and at least one vertical air gap formed by opposing and substantially parallel walls of the base structure and the load structure. The opposing walls being at least partly covered by respective arrays of permanent magnets, neighboring magnets in the arrays having alternating magnetization directions, an arrangement of the permanent magnets in the arrays being such that a gravitational force on the load structure is substantially compensated by a net magnetic force of the base structure on the load structure. | 11-14-2013 |
20130319803 | MAGNETIC SHOCK ABSORBING DEVICE - A magnetic shock absorbing device includes a cylinder and a magnetic module, and the magnetic module includes a plurality of magnetic units, and each magnetic unit includes a magnet, a protective cover covered onto the magnet, and an opening formed on both sides of each protective cover separately, and each magnetic unit is installed in series inside the cylinder, and a magnetic repulsive force is formed between sides of any two of the adjacent magnetic units, and the magnetic repulsive force produced by each magnetic unit in the magnetic module is used for producing a damping force to achieve a shock absorbing effect. | 12-05-2013 |
20130341137 | High energy density magnetic springs using spatially modulated magnetic fields technology - A magnetic spring utilizing spatially modulated magnetic field patterns of magnetic regions for both stator and slider, allowing custom force curves over the range of motion. Also disclosed is a magnetic spring whose slider can be rotated relative to the stator on the axis, such that the alignment of the spatially modulated magnetic field patterns of the slider and the stator is altered, resulting in changeable force curve for the spring, selected by rotating the slider. | 12-26-2013 |
20140027216 | ELECTROMAGNETIC VIBRATION SUPPRESSION DEVICE AND ELECTROMAGNETIC VIBRATION SUPPRESSION PROGRAM - The electromagnetic vibration suppression device includes a plurality of electromagnet pairs arranged in the width direction of a steel plate and which suppresses vibration of the steel plate running between electromagnets in each electromagnet pair using a control unit. The pseudo displacement calculation means calculates a pseudo displacement amount for the steel plate on the basis of the switching between ON and OFF of a sensor attached to the electromagnet pairs. The pseudo edge position calculation means calculates a pseudo edge position for the steel plate on the basis of the pseudo displacement amount. The current amount control means individually controls the amount of current that flows to the electromagnets on the basis of the pseudo edge position. | 01-30-2014 |
20140034434 | Power Tool Braking Device - A power tool braking device, in particular a hand-held power tool braking device, of a portable power tool has at least one magnetic field braking unit. The power tool braking device comprises at least one mechanical activation unit. | 02-06-2014 |
20140076676 | MAGNETO-RHEOLOGICAL DAMPING ASSEMBLY - A magneto-rheological damping assembly including a piston ( | 03-20-2014 |
20140216869 | MAGNETORHEOLOCIGAL FLUID-BASED MOUNT APPARATUS INCLUDING RATE DIP TRACK PASSAGE - A magnetorheological fluid-based hydraulic mount apparatus ( | 08-07-2014 |
20140238793 | ELECTROMAGNETIC SUSPENSION APPARATUS - An electromagnetic suspension apparatus includes a stator disposed on a vehicle body side and including a core and coils, a movable element disposed on a wheel side and including an outer rube and permanent magnets, and a cylinder apparatus located inside the stator and the movable element and disposed between the vehicle body side and the wheel side. A rod of the cylinder apparatus and the outer tube are nonrigidly coupled to each other via a coupling member formed as an elastically deformable elastic body. When a lateral force is applied, the coupling member is elastically deformed, by which the outer tube moves or swings relative to the rod so that the coils and the permanent magnets can be prevented from contacting each other. | 08-28-2014 |
20150008081 | MAGNETORHEOLOGICAL FLUID SHOCK ABSORBER - A magnetorheological fluid shock absorber includes a piston slidably arranged in a cylinder in which magnetorheological fluid whose viscosity changes by the action of a magnetic field is sealed. The piston includes a piston core which is attached to an end part of the piston rod and on the outer periphery of which a coil is provided, a flux ring which surrounds the outer periphery of the piston core and forms a flow passage for the magnetorheological fluid between the piston core and the flux ring, a plate which is annularly formed, arranged on the outer periphery of the piston rod and attached to one end of the flux ring, and a stopper whose axial position is specified with respect to the piston rod and which sandwiches the plate between the piston core and the stopper. | 01-08-2015 |
20150021129 | VIBRATION ABSORBER AND VIBRATION ABSORBER ASSEMBLY - A vibration absorber comprising a supporting device, an oscillating mass, at least one coil device, and at least on permanent magnet device. The coil device includes at least one winding. A permanent magnet of the permanent magnet device generates a magnetic field extending through a yoke device of the permanent magnet device and through a part of the windings such that when current flows through the windings in a suitable manner, two forces are generated that act between the supporting device and the permanent magnet device and include an angle unequal to 0°. | 01-22-2015 |
20150027828 | MAGNETIC BRAKE - A magnetic brake has an outer stator surrounding an inner stator with a circumferential slot between the outer stator and the inner stator. A coil is provided in the inner stator adjacent to the circumferential slot. A drag plate is attached to a rotatable shaft extending centrally through the inner stator. A drag ring joined to the drag plate extend into the circumferential slot. Air may flow through the brake over both sides of the drag ring to provide cooling via convention. The magnetic brake uses both hysteresis and eddy current braking. | 01-29-2015 |
20150034433 | MAGNETO-RHEOLOGICAL FLUID DAMPER HAVING ENHANCED ON-STATE YIELD STRENGTH - A magneto-rheological fluid valve includes a magnetic field generator having at least one electromagnetic coil and at least one magnetic pole having a pole length L | 02-05-2015 |
20150090545 | ELECTRICITY GENERATING SHOCK ABSORBERS - An electricity generating shock absorber includes a coil assembly having a length of electrically conducting material wrapped around an outside perimeter, and along a length, of a hollow tube formed of electrically resistant material; a magnet unit formed of at least one annular axial magnet; a central shaft having a magnetic reluctance on which a plurality of the magnet units are mounted, the central shaft dimensioned for insertion through a central opening of the at least one annular axial magnet, the central shaft combined with the plurality of magnet units forming a magnet assembly dimensioned to slideably insert into a central cavity of the hollow tube; and a cylindrical shell having a first end attached to a terminal end of the magnet assembly, the cylindrical shell extending a length of the magnet assembly, the cylindrical shell having an inner diameter sized to slideably accommodate an outside diameter of the coil assembly. | 04-02-2015 |
20160001621 | ELECTROMAGNETIC DAMPER - An electromagnetic damper is attached to a vehicle and causes oscillation damping force using a motor driven with energy from a power source. The electromagnetic damper includes an electrical circuit that causes a coil of the motor to be short-circuited in a state where the energy from the power source to the motor is interrupted. | 01-07-2016 |
20160032998 | ELECTROMAGNETIC FLYWHEEL DAMPER AND METHOD THEREFOR - The present disclosure relates to an electromagnetic rotary shock absorber for damping a wheel suspension component associated with a motor vehicle. The electromagnetic rotary shock absorber has a flywheel and at least one damper. The damper has a first element operably associated with the flywheel for driving the flywheel rotationally, and a second element operably associated with the wheel suspension component. The damper operates to dampen relative movement of the wheel suspension component using an inertia of the flywheel. | 02-04-2016 |
20160061281 | ADAPTABLE DAMPER - An adjustable damper includes a tube body, a driving rod to be displaced in the tube body and to engage a screw sleeve to drive a screw rod and further a fixed seat for rotation. The fixed seat has a plurality of permanent magnets surrounding for circular rotation and an operation element is driven by a rotating element for repeated linear displacement; a magnetic surface is further arranged on an inner periphery of an annular element of the operation element and an annular gap is arranged between the magnetic surface and the permanent magnets; therefore the displacing annular element is able to adjust a damping force of the driving rod by adjusting an overlapped area of the permanent magnets and a magnetic surface, and further adjust an eddy load formed thereby. The damper overcomes the problem of oil leakage and ensures the durability and quality with its adjustability. | 03-03-2016 |