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1030results about "Friction dampers" patented technology
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Magnetically actuated motion control device
InactiveUS6378671B1Damping frictionSpringsNon-rotating vibration suppressionMovement controlFriction force
A magnetically actuated motion control device includes 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.
Owner:LORD CORP
Damper for damping vibration and washing machine having the same
InactiveUS20060011429A1Frictional forceIncrease frictionSpringsOther washing machinesReciprocating motionControl theory
A damper for damping vibration and a washing machine having the same are disclosed. The damper includes a damper cylinder; a shaft inserted into the damper cylinder through one end of the damper cylinder, and reciprocating in the lengthwise direction of the damper cylinder; and a friction member provided on the shaft for damping vibration generated by friction with the inner wall of the damper cylinder, and moving vertically to the lengthwise direction of the damper cylinder. The damper adjusts damping force thereof according to vibrated states of an object to be vibrated, and has an improved vibration-damping effect.
Owner:LG ELECTRONICS INC
Rotary damper
InactiveUS6336252B1Enhanced level of machining precisionImprove the forceBuilding braking devicesWing fastenersFriction forceBase line
A rotary damper is adapted to exert braking force to an upswung door, a toilet lid or the like when the door is closed and dampen the impact produced by the closing door by a damping force far greater than the one obtained by a conventional rotary damper using viscous shearing resistance. The rotary damper can also make the door open by a force far smaller than a conventional rotary damper. A movable shaft is rotatably housed in a casing and has a cylindrical shaft section including an arcuate non-resilient section extending from a peripheral edge thereof to an axial base line close to the other free peripheral edge thereof and an eccentric resilient section extending from the axial base line to the other free peripheral edge thereof with its eccentricity increasing as a function of the distance from the base line relative to the radius of curvature of the inner peripheral surface so as resiliently abut the inner peripheral surface. The frictional force between the eccentric rest section and the inner peripheral surface increases when the movable shaft is driven to rotate to close the door to which it is fitted but falls remarkably when the movable shaft is driven to rotate in the opposite sense to open the door.
Owner:SUGATSUNE IND CO LTD
Garbage Bin Descending Control System
A descending control system for a garbage bin includes a bin provided with a pedal to control an active rod to ascend and descend to open and close a lid. A gear and a rack are provided in the bin. Both the gear and the rack are disposed with teeth to engage with each other. The height of the teeth on the rack decreases from a first end toward a second end of the rack. The engagement between the teeth of the gear and the teeth of the rack reduces the closing speed of the lid.
Owner:YUAN MIN ALUMINUM
Washer, damper thereof, and control method thereof
The present invention provides a washer, damper thereof, and control method thereof, by which noise is reduced by adjusting a damping force of the damper in a manner of turning on / off power of the damper according to an oscillation frequency of a vibrating body such as a washer. The control method reduces noise by supplying power to a damper in an excessive vibration state of a vibrating body such as a washer or by cutting off the power supplied to the damper in a normal vibration state of the vibrating body.
Owner:LG ELECTRONICS INC
Acoustic attenuation materials
Acoustic attenuation materials are described that comprise outer layers of a stiff material sandwiching a relatively soft elastic material therebetween, with means such as spheres, discs or wire mesh being provided within the elastic material for generating local mechanical resonances that function to absorb sound energy at tunable wavelengths.
Owner:THE HONG KONG UNIV OF SCI & TECH
Article and method of manufacture thereof
InactiveUS20090258168A1Rapid coolingElectric discharge heatingVacuum evaporation coatingManufacturing technologyEngineering
A particle damper is formed using a solid freeform manufacturing technique. A filler provides support for the closing wall of the cavity as it is formed. Apertures allow at least a portion of the filler to be removed. A particle fill of between 90 and 95% is achieved either by removing sufficient filler to reach this fill or removing excess filler and re-filling with damping particles.
Owner:ROLLS ROYCE PLC
System comprising magnetically actuated motion control device
InactiveUS20070023244A1Damping frictionSpringsNon-rotating vibration suppressionMagnetic actuationMovement control
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.
Owner:LORD CORP
Damper for vehicles
InactiveUS6439359B1Reduce weightInhibition effectPortable framesNon-rotating vibration suppressionInterior spaceElastomer
A vibration restraining apparatus for vehicle of the present invention is comprised of a housing formed by a rigid material and having an inner space, and fixed to a vibration transmitting member; a filled member sealed in the inner space of said housing in a non-adhered state with leaving a gap with respect to a vibrating direction of said housing, and formed by an elastic body at least at a surface thereof. When the housing resonates by vibration transmitted from the vibration transmitting member, the filled member contacts inner surface parts located at both sides of the housing in a vibrating direction thereof to exercise a damping character due to an energy loss caused by a sliding friction and a collision. Thus, a large damping character occurs inside of the housing to reduce vibration of the housing effectively. As a result, vibration of the vibration transmitting member is effectively reduced. The vibration restraining apparatus for vehicle of the present invention can be lightened in weight, does not have a temperature dependency, and can exercise the vibration restraining effect for plural resonances having different frequencies.
Owner:SUMITOMO RIKO CO LTD
Vehicular steering wheel and column assembly including torsional damper device
InactiveUS7909361B2Pedestrian/occupant safety arrangementSteering linkagesSteering columnSteering wheel
A steering wheel and column assembly is provided for deployment on a vehicle. In one embodiment, the steering wheel and column assemblies comprises: (i) a steering column housing, (ii) a rotatable steering assembly, and (iii) a torsional damper device. The rotatable steering assembly includes a steering column shaft, which is rotatably coupled to the steering column housing, and a steering wheel, which is fixedly coupled to the steering column shaft. The torsional damper device includes a stator body, which is fixedly coupled to the steering column housing, and a rotor body, which is fixedly coupled to the rotatable steering assembly. The rotor body frictionally engages the stator body to produce a predetermined coulomb torque frictional resistance.
Owner:GM GLOBAL TECH OPERATIONS LLC
Rotary damper
InactiveUS6840353B2Small in friction coefficientSpringsAutomatic initiationsHOLDING CHAMBERBrake force
A rotary damper includes a housing (1) that has a holding chamber (4), a rotor (2) integral with a gear (2a) disposed rotatably in the holding chamber (4) of the housing (1), and a braking member (3) for controlling the rotation of the rotor (2). The braking member (3) is interposed between the outer periphery of the rotor (2) and the inner periphery the holding chamber (4). A supporting shaft (5) is erected on the bottom part of the holding chamber (4) of the housing (1). A through-hole (7) is bored in the rotor for permitting insertion therein of the supporting shaft (5) in the axial direction of the rotor (2). The rotor (2) is supported through the supporting shaft (5) and the through-hole (7). With this configuration, a stabilized braking force is constantly provided because the rotor (2) does not incline it is being rotated.
Owner:PIOLAX CO LTD
Impact energy attenuation system
ActiveUS20110117310A1Increase rangeReduce impact energyEnvelopes/bags making machineryGlass/slag layered productsCushioningUltrasound attenuation
A new and novel impact energy attenuation material, impact energy attenuation module employing the material and a fit system for optimizing the performance thereof is provided. Non-linear energy attenuating material consisting of a plurality of loose particles is employed for impact energy dissipation. The loose particles are preferably spherical elastomeric balls. An impact energy attenuation module includes a container that holds the loose particles. The impact energy attenuation module can be provided in a wide range of sizes and shapes and the loose particles can be provided in different materials, sizes, density, compaction and hardness to suit with the application at hand. A matrix of impact energy attenuation module are provided about the surface of a shell to provide the required impact energy attenuation. The material, impact energy attenuation module and system of the present invention are well suited for protection of body parts and other cushioning and protection needs.
Owner:9 LIVES SF LLC
Damper for washing machine
InactiveCN1550609AReduce vibrationReduce noiseNon-rotating vibration suppressionOther washing machinesEngineeringMechanical engineering
Disclosed is a damper for a washing machine, comprising: a cylinder; a rod of which one end is inserted in the cylinder; a sliding rod further extending from the inserted end of the rod; a pad holder slidably installed apart from and on an outer side of the sliding rod; a damping pad formed on an outer circumference of the pad holder and being in contact with an inner circumference of the cylinder; and a rotation-preventing part interposed between the pad holder and the rod, for preventing a conical rotation of the washing machine.
Owner:LG ELECTRONICS INC
Damper for washing machine
InactiveCN1621599AReduce vibrationAvoid damageOther washing machinesTextiles and paperControl theoryFriction force
A damper for a washing machine is disclosed herein. The damper consists of a cylinder and a piston, wherein the cylinder and the piston are interactively connected to each other when the cylinder is connected to the washing tub and the piston is connected to the bottom plate; when the piston moves in the cylinder, a The first friction member is used to generate friction; if the movement of the piston exceeds a predetermined displacement range, a slider is connected with the piston inside the cylinder to move together with the piston; and when the slider enters the cylinder, a surrounding slider The provided second friction member is used to generate friction. The damper with the above structure can generate different damping forces according to the vibration degree of the laundry tub, thus effectively reducing the vibration of the laundry tub.
Owner:LG ELECTRONICS INC
Hybrid energy dissipation vibration damping device
InactiveCN103291818ASimple preparation processStructure is clear and easy to understandSolid based dampersFriction dampersViscous liquidFluid phase
The invention relates to a hybrid energy dissipation vibration damping device which comprises a container, a particle system and viscous liquid. The particle system comprises solid particles, the viscous liquid can be a single type of liquid, or a plurality of types of liquid are mixed with one another to form the viscous liquid, and the viscous liquid is accommodated inside the container; the particle system is arranged in the viscous liquid, can float in the viscous liquid or can be sunken at the bottom of the viscous liquid; the viscous liquid can vibrate in the container. A function mechanism of the hybrid energy dissipation vibration damping device is similar to a function mechanism of a tuned liquid damper, the different types of liquid rub with one another to dissipate energy, structural restoring force is provided for lateral pressure of the container, and structural amplitude is reduced; the solid particles of the particle system are collided with one another and rub with one another in the container to dissipate energy; the viscous liquid rubs with the particle system or the particles to dissipate energy. The hybrid energy dissipation vibration damping device has the advantages that merits of a particle damper and merits of the tuned liquid damper are integrated in the hybrid energy dissipation vibration damping device, and the hybrid energy dissipation vibration damping device is superior to the traditional vibration damper with a single energy dissipation principle owing to various hybrid energy dissipation mechanisms for liquid-phase rubbing energy dissipation, solid-phase collision and rubbing energy dissipation, solid-liquid-phase rubbing energy dissipation and the like.
Owner:TONGJI UNIV
Impact energy attenuation system
ActiveUS8524338B2Envelopes/bags making machineryGlass/slag layered productsCushioningUltrasound attenuation
A new and novel impact energy attenuation material, impact energy attenuation module employing the material and a fit system for optimizing the performance thereof is provided. Non-linear energy attenuating material consisting of a plurality of loose particles is employed for impact energy dissipation. The loose particles are preferably spherical elastomeric balls. An impact energy attenuation module includes a container that holds the loose particles. The impact energy attenuation module can be provided in a wide range of sizes and shapes and the loose particles can be provided in different materials, sizes, density, compaction and hardness to suit with the application at hand. A matrix of impact energy attenuation module are provided about the surface of a shell to provide the required impact energy attenuation. The material, impact energy attenuation module and system of the present invention are well suited for protection of body parts and other cushioning and protection needs.
Owner:9 LIVES SF LLC
High-performance shear friction damper
ActiveUS20120138402A1Easy to installEasy maintenanceProtective buildings/sheltersFriction dampersArchitectural engineeringShear friction
Disclosed is a high-performance shear friction damper provided in a building construction and attenuating a vibration which is applied to the building construction due to external loads such as an earthquake or strong wind. The high-performance shear friction damper includes first and second support bodies supported to a building construction or damping rods, two prop plates fixed to the second support body and extending to surround both side surfaces of the first support body, friction plates mounted between the first support body and the prop plates, and fastening units each including a tension bolt penetrating the first support body, the friction plates and the prop plates, and a nut fastened to an end of the tension bolt, wherein the first support body has slots extending in a horizontal direction, the tension bolts extend while penetrating the slots to allow the first support body to be slidably movable in the horizontal direction with respect to the friction plates.
Owner:IND ACADEMIC COOP FOUND CHOSUN UNIV
Drum type washing machine
InactiveUS20060053839A1Good precisionOther washing machinesControl devices for washing apparatusRotational axisBobbin
A drum type washing machine includes a housing; a rotary drum having a substantially horizontal or slanted rotational axis; a water tub, suspended in the housing, for accommodating therein the rotary drum; a controller for controlling an operation of the washing machine; and a displacement detecting unit disposed between the water tub and a base portion of the housing, for detecting displacement of the water tub. The displacement detecting unit has a primary coil wound around a bobbin; a first secondary coil without overlapping the primary coil and a second secondary coil overlapping the primary coil, the first and the second secondary coils being wound coaxially with the primary coil; and a magnetic body vertically movable inside the bobbin corresponding to a displacement of the water tub.
Owner:PANASONIC CORP
Hollow shafting particle damper
InactiveCN101725656AGuaranteed symmetric distributionSave spaceFriction dampersInterior spaceLongitudinal vibration
The invention relates to a hollow shafting particle damper, which is used for comprehensively controlling shafting vibrations. The hollow shafting particle damper comprises two identical semi-cylindrical damping units and a positioning device, wherein the positioning device is positioned between the two semi-cylindrical damping units and is used for fixing the two semi-cylindrical damping units in a hollow shaft. The damper can effectively control the torsional vibration, transverse vibration and longitudinal vibration of a shafting, and is a comprehensive control device for the vibration of the shafting in three directions. The damper is arranged in the shafting so as to effectively make use of the inner space of the shafting and save cost and space.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Dampener for a vehicle seat recliner
A recliner assembly for a vehicle seat having a seat back movably mounted relative to a seat bottom includes first and second frame members. The first frame member supports the seat back. The second frame member supports the seat bottom. The first frame member is pivotally attached to the second frame member and is movable between an upright position and a storage position. In the upright position, the seat back is in a generally vertical position for supporting an occupant seated on the seat. In the storage position, the seat back is positioned above the seat bottom. A damper is operatively connected between the first and second frame members. The damper dampens the movement of the first frame member relative to the second frame member when the first frame member is pivoted from the upright position to the storage position.
Owner:LEAR CORP
Plate-type friction-changing damper
InactiveCN101216087ADoes not affect natural vibration characteristicsNo additional stiffnessFriction dampersShock proofingFrictional coefficientShock resistance
The invention relates to a plate type variable friction damper, which is primarily used in the field of wind resistance and shock resistance of structures and equipments. The invention makes use of the variation of the friction factor of a friction surface to provide a linear damping variable friction damping device. The plate-type variable friction damper primarily consists of two cover boards, a sliding panel, a pre-tightening bolt, a disk spring and a packing strip. The friction surface of the cover board is divided into three equal parts; the friction factor between the middle friction surface and the friction surface of the sliding panel is smaller than the friction factors between the friction surfaces of the two parts on both sides and the friction surface of the sliding panel. The plate-type variable friction damper avoids the defects of high cost, being maintained intricately and oil leakiness of the traditional linear damping device, such as the oil damper, and overwhelms the problem that the constant friction damper can not keep the same control under different loads. The invention has simple structure, and is produced easily with low cost. The invention is applicable for both large structures and small structures and equipments, and is suitable to be promoted and used in the field of shock resistance of structures and equipments.
Owner:BEIJING UNIV OF TECH
Washing machine
InactiveUS20060075791A1Properly attenuatingDamping force can be maximizedOther washing machinesWashing machine with receptaclesControl theoryShock absorber
Disclosed herein is a washing machine. The washing machine comprises at least one damper disposed between a drive part of the washing machine and a cabinet for performing shock-absorbing operation, a damper bracket fixedly attached to the drive part for transmitting vibration or impact to the at least one damper, and a revolute joint connection unit connected between the at least one damper and the damper bracket. When non-horizontal vibration or impact is transmitted to the at least one damper, the damper is rotated by the revolute joint connection unit. Consequently, the shock-absorbing operation is effectively performed.
Owner:LG ELECTRONICS INC
Axial clutch assembly as well as gas spring and gas damper assembly and method including same
A gas spring and gas damper assembly can include a gas spring and a gas damper. The gas spring can include a first end member, a second end member and a flexible wall that at least partially form a spring chamber. The gas damper can include first, second and third damper elements that are telescopically interconnected with one another. The first and third damper elements can be operatively connected to respective ones of the first and second end members. The third damper element includes damper piston having an axial clutch. The second damper element is suspended between the first and third damper elements by biasing elements that engaging the damper piston.
Owner:FIRESTONE IND PROD COMPANY
Friction damper
The invention relates to a friction damper. The friction damper comprises a plunger and an arresting cylinder, wherein at least part of the plunger is closely contacted with the working surface of the inner wall of the arresting cylinder, and the friction damper is characterized in that the working surface of the external surface of the arresting cylinder, corresponding to the inner wall of the arresting cylinder, is provided with an annularly closed lacing device. Compared with other structural dampers, the friction damper provided by the invention has the advantages that the structure is simple, a precision part is not needed, the tonnage is large, the journey is long, the manufacturing cost is low, the property is stable, the operation is reliable, the friction damper can reset as being provided with an unloading device, the basic maintenance is not needed, and the service life is long; and the friction damper can be use again after overhauling, and the friction damper has a reproducible characteristic, is very environment-friendly, and can be widely applied to multiple fields such as industry, construction, railway and bridge.
Owner:QINGDAO CREATE ENVIRONMENT CONTROL TECH +1
Method and device for suppression of vibration of rotor system with elastic support
InactiveCN1657800AReduce vibrationPrevent destabilizing vibrationNon-rotating vibration suppressionFriction dampersRelative motionFriction force
The invention is a method for preventing rotator system variation with flexible support and its device, aiming at solving the problems of high accuracy requirement and hard technique, by the relative movement of movable friction disc and still friction disc in dry friction damper to create frictional force, bring outer damping into the rotator system to decreased its variation in critical rotational speed, so that its stability is improved. The concrete method includes: mount movable friction disc and still friction disc onto axial, through pressure carried by force applicating and adjusting the pressure to change the damper value. After bringing into dry friction damper, the variation of rotator in critical rotational speed as well as its vibration can be prevented effectively; it has simple structure.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Rotating tub washer binary damper system
InactiveUS20050211517A1Dampen problematic movementProblem with movementBraking element arrangementsLiquid resistance brakesEngineeringMotion transfer
The invention provides a rotating tub washer with an on-off binary damper system for damping a problematic movement between the washer frame and the rotating tub. The on-off binary damper system has a friction pad and a housing friction damper surface, with the friction pad in contact with said housing friction damper surface. The on-off binary damper system has an electromagnetic coil core and a magnetic locking slide with a slide gap between said electromagnetic coil core and said magnetic locking slide to provide for relative sliding motion between the electromagnetic coil core and the magnetic locking slide, wherein a current supplied to said electromagnetic coil core removes the slide gap and electromagnetically locks the electromagnetic coil core and the magnetic locking slide together with the relative sliding motion transferred to the friction pad, with the friction pad rubbing against said housing friction damper surface inorder to dampen the problematic movement between the frame and the rotating tub.
Owner:LORD CORP
Mass damping device of rigid connection space lever of stay cable
ActiveCN101709567AGood vibration dampingVibration reduction effect is easy to adjustBridge structural detailsVibration suppression adjustmentsEngineeringResistance force
Owner:CHINA RAILWAY QIAOYAN TECH CO LTD +2
High-performance shear friction damper
ActiveUS8807307B2Easy to installRespond effectivelySpringsStands/trestlesArchitectural engineeringShear friction
Disclosed is a high-performance shear friction damper provided in a building construction and attenuating a vibration which is applied to the building construction due to external loads such as an earthquake or strong wind. The high-performance shear friction damper includes first and second support bodies supported to a building construction or damping rods, two prop plates fixed to the second support body and extending to surround both side surfaces of the first support body, friction plates mounted between the first support body and the prop plates, and fastening units each including a tension bolt penetrating the first support body, the friction plates and the prop plates, and a nut fastened to an end of the tension bolt, wherein the first support body has slots extending in a horizontal direction, the tension bolts extend while penetrating the slots to allow the first support body to be slidably movable in the horizontal direction with respect to the friction plates.
Owner:IND ACADEMIC CORP FOUND YONSEI UNIV
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