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| Number | Title | Issue Date |
| 8141689 | Magnetorheological (MR) piston ring with lubricating grooves A magnetorheological (MR) piston ring includes an MR-piston-ring body disposable within a cylinder of an MR damper. The MR-piston-ring body has a radially inner surface defining a boundary of a longitudinally-extending MR passageway. The MR-piston-ring body includes... | 03/27/2012 |
| 8104591 | Magnetic valve for shock absorbers A shock absorber having a valve controlling the flow rate of fluid between a compression chamber and a rebound chamber in a housing and separated by a piston. The valve has an orifice component and a blocker component, one of which has a permanent magnet, and the ot... | 01/31/2012 |
| 8100235 | Controllable hydraulic bearing A controllable hydraulic bearing for damping vibrations in a defined frequency band is proposed, which includes an elastomeric body (1), two chambers which are filled with a magneto-rheological fluid and connected with one another by at least one channel (... | 01/24/2012 |
| 8091692 | Fluid-filled cellular solids for controlled An impact absorber using an energy-absorbing, fluid-impregnated material consisting of a porous interconnected network of solid material forming edges and faces of cells, preferably an open-cell reticulated or partially closed-cell foam, or formed from fibers or oth... | 01/10/2012 |
| 8051961 | Magneto-rheological damper In a magneto-rheological variable damper (6), the piston (16) comprises an inner yoke (32), an outer yoke (31) concentrically surrounding the inner yoke and held in position by pair of end plates (33, 34) made of non-magnetic mater... | 11/08/2011 |
| 8042659 | Active force generation/isolation system employing Magneto Rheological Fluid (MRF) A system for reducing vibrations in a rotating system uses a variable viscosity medium that is redistributed in a housing connected to the rotating system. Specifically, the medium is responsive to a control signal that is generated as a function of rotational speed... | 10/25/2011 |
| 7997393 | Magnetorheological (MR) rod guide assembly and MR damper having same A magnetorheological (MR) rod guide assembly includes a nonporous MR-rod-guide-assembly housing, annular first and second seals, and a non-annular, porous filter plug. The housing has a through bore. The first and second seals are positioned in the through bore, are... | 08/16/2011 |
| 7958979 | Variable damper In a variable damper using magneto-rheological fluid that comprises a cylinder (12) filled with the fluid, a piston (16) slidably received in the cylinder and including an inner yoke (32; 62; 126), an outer yoke (31; 64, 65; 140) and a co... | 06/14/2011 |
| 7900755 | Bi-fold valve-type magnetorheological fluid energy absorbing device An energy absorbing device is provided that includes a damper assembly having inner and outer concentric tubes and a piston movable within the inner tube. The damper assembly is configured to form bi-fold valve-type cavities to operatively connect an inner chamber o... | 03/08/2011 |
| 7874407 | System and method for magnetorheological-fluid damping utilizing porous media A magnetorheological fluid damping system includes a hydraulic cylinder, a piston head, a piston rod, and a porous valve. The hydraulic cylinder is configured for disposing magnetorheological fluid therein. The piston head is disposed within the hydraulic cylinder a... | 01/25/2011 |
| 7828126 | Magnetorheological (MR) piston, MR piston assembly, and MR damper system A magnetorheological (MR) piston assembly (10) includes an MR piston (12) and a rod (14). The MR piston (12) includes a central longitudinal axis (16), first and second longitudinal ends (18 and 20), an MR passageway ... | 11/09/2010 |
| 7775333 | Magnetorheological damper and use thereof An magnetorheological damper useful in structural vibration control has a damper body and a moveable portion relative to the damper body. The damper includes an magnetorheological material contained within the damper body for resisting movement of the moveable porti... | 08/17/2010 |
| 7753180 | Magnetorheological piston having a bypass passageway A magnetorheological (MR) piston includes an MR piston core, an MR piston end plate, a shim disc, and a flexible orifice disc. The end plate covers an end of the core to define a chamber and has a through passageway aligned with an MR-piston-core bypass passageway a... | 07/13/2010 |
| 7686143 | Magnetorheological device and system and method for using the same A controllable magnetorheological (MR) damper having first, second and third portions is disclosed. The first and second portions have a translational degree of freedom therebetween, and the third portion has a rotational degree of freedom with respect to the first ... | 03/30/2010 |
| 7677370 | Energy absorbing device An energy absorbing device, particularly for single-use occupant protection in vehicles on the action of an external force, has a free-flowing medium which is forced through a constriction by a mobile pressure element on the action of an external force. A pull devic... | 03/16/2010 |
| 7669700 | Elastomer bearing with hydraulic damping An elastomer bearing with hydraulic damping is disclosed which includes a housing (1, 2), a connecting element (3), an elastomer body (4) which couples the housing (1, 2) and the connecting element (3) with one another for damping ... | 03/02/2010 |
| 7637360 | 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... | 12/29/2009 |
| 7624850 | Damping device having controllable resistive force A damper assembly is provided including a linear to rotary motion conversion mechanism having an outer tube member. An inner tube member is reciprocally movable and at least partially disposed within the outer tube member. The inner tube member is adapted for linear... | 12/01/2009 |
| 7510061 | MR-fluid hydraulic mount An MR-fluid (magnetorheological-fluid) hydraulic mount includes a hydraulic-mount partition plate assembly and an electric coil. The partition plate assembly has a longitudinal axis, has first and second sides, and has an MR-fluid through orifice extending substanti... | 03/31/2009 |
| 7422092 | Controllable compressible fluid damper A damper/strut that can provide variable damping and spring energy storage and dissipation. One embodiment includes an adjustable magnetorheological damper and a mechanically adjustable fluid spring in association with an internal accumulator. A combination of inter... | 09/09/2008 |
| 7422709 | Electromagnetic rheological (EMR) fluid and method for using the EMR fluid An electromagnetic rheological (“EMR”) fluid (18) broadly includes a conducting medium (22) and a plurality of micronparticles (24) suspended in the medium (22). Each of the micronparticles (24) includes a magnetically permeabl... | 09/09/2008 |
| 7416062 | Torsional magnetorheological device A magnetorheological device comprising a housing having a divider within the housing is disclosed and claimed. A rotary impeller having two paddles is rotatably mounted within the housing. The rotary impeller sealingly engages the divider and the paddles in combinat... | 08/26/2008 |
| 7386378 | Linear control of an automobile suspension A vehicle suspension system that includes a cylinder, a rod inserted within the cylinder, a piston coupled to the rod and a piston valve which has an input piston current. The suspension system further includes a base coupled to the cylinder, a base valve which has ... | 06/10/2008 |
| 7364022 | Controllable magneto-rheological fluid devices for motion-damping Variably controllable motion-damping devices are disclosed that utilize a magneto-rheological fluid (MRF). One configuration of such a device includes a first valving region and a second valving region connected to the first valving region. Between the first and sec... | 04/29/2008 |
| 7360773 | Self-steering axle suspension system having a rotary stabilizer A self-steering axle suspension system utilizing a rotary damper coaxially aligned with and acting directly about the king pin centerline on one side of the vehicle is disclosed. When used as such, the rotary damper constitutes a rotary stabilizer. The rotary stabil... | 04/22/2008 |
| 7354363 | Magnetorheological fluid V-ribbed belt tensioner with through shaft A tensioner for a power transmitting belt is provided having a base, an arm pivotably attached to the base, a pulley rotatably attached to the arm and a spring operatively connected to the arm and the base for urging the arm in direction to tension the belt. A hydra... | 04/08/2008 |
| 7354056 | Trailer stability control apparatus A trailer stability control apparatus for a vehicle and a trailer includes a trailer hitch assembly interconnecting a rear end of the vehicle and a front end of the trailer. The trailer stability control apparatus also includes at least one controllable damper conne... | 04/08/2008 |
| 7347437 | Damper assembly A damper assembly for a suspension system of a vehicle includes a housing adapted to be mounted to one end of a strut in the suspension system. The housing has a chamber with fluid therein. The damper assembly also includes at least one diaphragm extending across th... | 03/25/2008 |
| 7331265 | Electromagnetic punch presses with feedback device An electromagnetically driven punch press is described. The punch press has an engine plate and a die set and a ram between the engine plate and die set. The engine plate has an assembly fixed thereto having a solenoid with windings that create a magnetic field when... | 02/19/2008 |
| 7322187 | Metallurgical powder compositions and articles and methods utilizing the same The metallurgical powder composition suspensions of the present invention include a magnetic powder having an outer oxide layer suspended in a carrier fluid. Magnetic powders include iron-based powders, such as for example, powders of iron pre-alloyed with other ele... | 01/29/2008 |
| 7316419 | Damped steering assembly A steering column for a motor vehicle includes upper steering-column portion, a lower steering-column portion, and a damping body for coupling the upper and lower steering-column portions, with piezoelectric elements being integrated in the damping body. These piezo... | 01/08/2008 |
| 7308975 | Velocity sensing system for a damper A velocity sensor including a damper assembly having a central axis, a magnet extending parallel to the central axis, the magnet having a magnetic axis radially oriented with the central axis, and a coil extending parallel to the central axis and radially oriented w... | 12/18/2007 |
| 7303056 | Magnetorheological device and system and method for using the same A controllable magnetorheological (MR) damper having first, second and third portions is disclosed. The first and second portions have a translational degree of freedom therebetween, and the third portion has a rotational degree of freedom with respect to the first ... | 12/04/2007 |
| 7293313 | Method of determining the weight of laundry in a washing machine drum A method of determining the weight of laundry placed in the drum rotatably mounted in a vertically moveable sudsing container of a washing machine, in which a value representative of the highest position attained by the sudsing container in a previous washing cycle ... | 11/13/2007 |
| 7293633 | Controlled damper assembly with isolated electrical connection A controlled damper assembly includes a controlled-damper-assembly piston, a controlled-damper-assembly piston rod attached to the piston, an insulated wire, and an electrical connector. The insulated wire is positioned in the piston rod, has a first end operatively... | 11/13/2007 |
| 7293836 | Seat assemblies including a seat stroking device and methods of use A seat assembly including a seat stroking device for a vehicle and methods of use include a seat adjustment mechanism comprising a stationary rail fixedly attached to a vehicle floor and a movable rail slidably engaged with the stationary rail, wherein the seat adju... | 11/13/2007 |
| 7290642 | Magnetic spring device with negative stiffness A magnetic spring device with negative stiffness contains at least one first pole body combination composed of at least one first, at least one second and at least one third pole body, which each have opposite magnetic poles, with the pole bodies in the combination ... | 11/06/2007 |
| 7279009 | Speed-adaptive and patient-adaptive prosthetic knee The invention relates to an automated speed-adaptive and patient-adaptive control scheme and system for a knee prosthesis. The control scheme and system utilizes sensory information measured local to the prosthesis to automatically adjust stance and swing phase knee... | 10/09/2007 |
| 7278522 | Controllable motion damper A controllable motion damper with a damping piston separating two damping chambers from each other in a damping cylinder. A damping valve is disposed in a connecting channel of the two damping chambers with the transmissivity of the damping valve for a damping fluid... | 10/09/2007 |
| 7276823 | Active vibration damping device An active vibration damping device having a solenoid actuator designed with a movable element positioned inserted into a guide hole of a stator having a yoke member is attached about a coil to form a stator-side magnetic path with the guide hole lying on its center ... | 10/02/2007 |
