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Class 188/267.1 - Electroviscous or electrorheological fluid


Subclass of Class 188 - Brakes
Definition: Internal resistance motion retarder wherein the liquid or
No. of patents: 180
Last issue date: 08/16/2011


1          
NumberTitleIssue Date
7997392Vibration damper
A vibration damper, e.g. for damping retraction or extension springing forces on motor vehicles, includes a pressure medium cylinder in which a piston with a piston rod is axially slidably arranged. The piston divides the cylinder into first and second chambers whic...
08/16/2011
7942248Adjustable damping control with end stop
A damper device comprising a first mode having a first level of damping, a second mode having a second level of damping corresponding to a predetermined function, a sensor system having a first output corresponding to a normal position and a second output correspond...
05/17/2011
7849983Controllable vehicle suspension system with a controllable magnetorheological fluid strut
The controllable suspension system includes a strut with a magnetorheological fluid damper. The magnetorheological fluid damper includes a longitudinal damper tubular housing having a longitudinally extending axis and an inner wall for containing magnetorheological ...
12/14/2010
7770701Suspension strut for use with a compressible magnetorheological fluid
A strut (12) is configured for an active suspension system (142) which provides electronic control for both the force applied by the strut (12) and the dampening characteristics of the strut (12). A compressible fluid (18) is used ...
08/10/2010
7422092Controllable 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
7413063Compressible fluid magnetorheological suspension strut
A strut (12) is configured for an active suspension system (142) which provides electronic control for both the force applied by the strut (12) and the dampening characteristics of the strut (12). A compressible fluid (18) is used ...
08/19/2008
7364022Controllable 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
7354363Magnetorheological 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
7331252Braking system
This braking system (S) is adapted to be used with a mechanism having one or several turning members (34), and comprises a toothed wheel (6), connected in rotation with at least one turning member (34) to be braked, and an endless screw (8
02/19/2008
7329450Textile backed pile article and method for making same
A pile article is provided having a band of textile material, and a plurality of fiber loops defining a pile having sides from ends extending longitudinally along the band. The band is ultrasonically welded to the ends and a portion of the sides of the pile, and is ...
02/12/2008
7318505Vibration damper
Damping element having a container tube, a piston mounted with freedom of movement in the damping medium-filled tube, a piston rod connected to the piston, and a fastening part for connecting the damping element to the first of the masses which are to be isolated fr...
01/15/2008
7316303Force-controlling mechanical device
A mechanical device for use in the control of mechanical forces. The device comprising first and second terminals which, in use, are connected to components in a system for controlling mechanical forces. These terminals are moveable with respect to one another. The ...
01/08/2008
7308738Releasable fastener systems and processes
A releasable fastener system comprises a loop portion and a hook portion. The loop portion includes a support and a loop material disposed on one side thereof. The hook portion generally includes a support and a plurality of closely spaced upstanding hook elements e...
12/18/2007
7303056Magnetorheological 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
7293836Seat 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
7293633Controlled 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
7278522Controllable 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
7275750Roll control system, device and method for controlling vehicle stability
A roll control system for a vehicle is disclosed. The roll control system includes front and rear stabilizer bars, first and second magnetorheological actuators, and an electronic control system. The first magnetorheological actuator is disposed between the front st...
10/02/2007
7276823Active 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
7261176Articulated vehicle suspension system shoulder joint
An articulated vehicle suspension system shoulder joint is disclosed. A vehicle includes a plurality of wheel assemblies; a plurality of rotating shoulder joints, each wheel assembly being mounted to a respective one of the shoulder joints and rotatable in a plane b...
08/28/2007
7243763System 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...
07/17/2007
7240941Vehicle storage assembly with adjustable door
A vehicle storage assembly includes a storage compartment having an opening to permit access to the compartment. A door adjacent the opening is moveable between a closed position that covers the opening and an open position that permits access to the compartment thr...
07/10/2007
7234575Magnetorheological damper system
A magnetorheological damper system comprising a reservoir in communication with a damper. The damper comprises a damper cylinder defining a damper chamber, wherein the damper chamber contains a magnetorheological fluid and a movable damper piston. The damper piston ...
06/26/2007
7232016Fluid damper having continuously variable damping response
An improved damping apparatus that utilizes a fluid having a viscosity that may be varied by the application of an electromagnetic field, such as a magnetorheological fluid or an electrorheological fluid, to provide the damping response. The damping apparatus includ...
06/19/2007
7225905Magnetorheological fluid damper
A magnetorheological damper device is provided having an increased shear interface area per unit volume of device, which enhances the stroking force of the damper. The damper generally includes a thrust shaft comprising an external threaded surface in threaded commu...
06/05/2007
7219752System and method for damping vibration in a drill string
A system for damping vibration in a drill string can include a valve assembly having a supply of a fluid, a first member, and a second member capable of moving in relation to first member in response to vibration of the drill bit. The first and second members define...
05/22/2007
7188827Gas spring with a protective sleeve for a rolling bellows
Gas spring includes a cover which works together with a rolling bellows and a bottom part to form a gas-filled spring space, where at least part of the outside surface of the rolling bellows is covered by a sleeve. The sleeve provides a receptacle for at least one s...
03/13/2007
7182188Isolator using externally pressurized sealing bellows
Apparatus are provided for a damping system. The system includes a housing having an inner surface defining a passage therethrough, a first bellows disposed within the passage, the first bellows having an outer surface and spaced apart from the housing inner surface...
02/27/2007
7163248Automotive console with adjustable armrest
A center console for an automobile includes an armrest that is selectively adjustable by vehicle occupants to and between a first position wherein the armrest is in a substantially horizontal orientation, and a second position wherein the armrest extends angularly a...
01/16/2007
7146690Releasable fastener system
A releasable fastener system comprises a loop portion and a hook portion. The loop portion includes a support and a loop material disposed on one side thereof. The hook portion generally includes a support and a plurality of closely spaced upstanding hook elements e...
12/12/2006
7140478Reversibly expandable energy absorbing assembly utilizing actively controlled and engineered materials for impact management and methods for operating the same
Reversibly expandable energy absorbing assemblies that utilize an actively controlled and engineering material to reversibly change a shear stress or a flexural modulus property. The actively controlled and engineering materials include magnetorheological fluids, el...
11/28/2006
7140081Releasable fastener system
A releasable fastener system comprises a loop portion and a hook portion. The loop portion includes a support and a loop material disposed on one side thereof whereas the hook portion includes a support and a plurality of closely spaced upstanding hook elements exte...
11/28/2006
7137496Parallel field electrode configurations for electrorheological fluid applications
The present invention provides novel configurations for the electrodes in a range of applications for ER fluids. The electrodes are configured so that they generate an electrical field a significant portion of which extends parallel to any anticipated applied force ...
11/21/2006
7118100Magnetorheological-fluid hydraulic mount
A magnetorheological-fluid hydraulic mount includes a hydraulic-mount partition plate assembly, a hydraulic-mount decoupler, an electric coil, and a flexible membrane assembly. The partition plate assembly has first and second sides, has a non-magnetorheological-flu...
10/10/2006
7106313Force feedback interface device with force functionality button
A force feedback mouse interface device connected to a host computer and providing realistic force feedback to a user. The mouse interface device includes a mouse object and a linkage coupled to the mouse that includes a plurality of members rotatably coupled to eac...
09/12/2006
7097212Mechanism
A mechanism for selectively locking and unlocking a vehicle door latch, comprising a rheological fluid in operable connection with an output and an input, the fluid acting so as to in a first state prevent actuation of the output upon actuation of the input and in a...
08/29/2006
7093389Flying insect trap
Traps are disclosed for controlling flying insects such as wasps. The traps are pre-packaged with attracting liquid prior to sale, and then sealed with a peel-off film in a manner that prevents leakage prior to use. When the trap is about to be used, the peel-off fi...
08/22/2006
7070027Magneto-rheological damper
A magneto-rheological (MR) damper including a piston guided in a cylinder that is filled with a magneto-rheological fluid, its work volume being formed oblique relative to the piston axis between the piston and the cylinder. ...
07/04/2006
7070708Magnetorheological fluid resistant to settling in natural rubber devices
A MR fluid formulation based upon a silicone liquid vehicle thickened with a treated fumed metal oxide and doped with one or more chemicals having hydrogen-bonding capability for use with natural rubber mounts. The MR fluid is resistant to settling of the magnetizab...
07/04/2006
7066064Method and apparatus for vibration dampening of barfeeders
A barstock bar feeder with a guide channel for encasing a barstock in a electro- or magneto-rheological hydrostatic oil bearing. Electro- or magneto-field generators are provided along the guide channel for selectively applying a field to the guide channel for chang...
06/27/2006
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