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1375results about How to "Improve damping performance" patented technology

Shock absorber for automatic injector

An automatic injector comprising an improved energy management system as well as an improved shock absorber system adapted to reduce dynamic stresses on internal device components is provided. In particular, a shock absorber system comprising a stationary shock absorber is provided. In some embodiments, the stationary shock absorber is located in the nose of the automatic injector.
Owner:SCIELE PHARMA

Acoustic damping pipe cover

A generally tubular laminated acoustic damping pipe cover to be used on a water pipe to reduce the noise level of the pipe, having a sound insulation layer whose area density is 1.5-5.0 kg / m2 and a sound absorptive layer whose thickness is 4.0-10.0 mm, covered with a heat-contractile film which when heat treated will tighten the acoustic damping pipe cover on the water pipe but hold the pipe cover in a sliding fashion. The acoustic damping pipe cover is lightweight and easy to manipulate, and provides an excellent acoustic damping performance.
Owner:SHISHIAI KK

Magneto-rheological damper with ferromagnetic housing insert

A magneto-rheological ("MR") damper having a damper body tube containing an MR fluid. A piston assembly is disposed in the damper body tube and forms an annular flow gap between the piston assembly and the damper body tube. The piston assembly has a piston core containing ferrous material and an electromagnetic coil mounted on the piston core for generating a magnetic field. The damper further includes a ferromagnetic member positioned outside of the damper body tube substantially adjacent the piston assembly for providing at least a part of a magnetic flux return path for the magnetic field.
Owner:DELPHI TECH INC +1

Composite tip shroud ring

A gas turbine engine includes a tip shroud ring rotatably supported on a last stage blade assembly in a turbine. The tip shroud ring is formed entirely of a fiber reinforced ceramic matrix composite material to provide a very light weight tip shroud ring, but also a very strong ring. The blades include pins extending from the tips, and the tip shroud ring includes holes in which the pins slide. Thus, the tip shroud ring is completely supported by the blade tip pins, and the centrifugal force developed by the rotation of the tip shroud ring does not add to the tensile force developed along the blades. Thus, the maximum rotational speed of the turbine rotor as defined by An2 can be increased. Also, because the blade tips are secured to the tip shroud ring in a circumferential direction, the tip shroud ring acts to dampen the bladed turbine by allowing only the middle of the blade to vibrate.
Owner:FLORIDA TURBINE TECH

Vibration damping device

A vibration damping device for a drive system of a motor vehicle includes a base body arranged for rotating about an axis of rotation and a deflection mass arrangement arranged in said base body and having at least one deflection mass and a deflection path associated with the at least one deflection mass and along which the deflection mass is movable during rotation of the base body about the axis of rotation. The deflection path has a vertex area at a position furthest from the axis of rotation and deflection areas on both sides of the vertex area extending from the vertex area to ends areas. The deflection areas have a decreasing distance from the axis of rotation (A) proceeding from the vertex area toward their end areas. A braking arrangement acts in the end areas of the deflection areas for gradually slowing the approach of the at least one deflection mass to a respective end area of the deflection path.
Owner:ZF FRIEDRICHSHAFEN AG

Acoustic metamaterials

ActiveUS20140027201A1Superior vibro-acoustic damping propertyEasy constructionSound proofingSound producing devicesEngineeringAcoustic metamaterials
Metamatenal members for absorbing sound and pressure, and modular systems built of metamaterial members are provided. The metamaterial member includes an outer mass. The outer mass can have a cavity formed therein in which a stem coupled to an inner mass is disposed, or the outer mass can be solid and contain an inner mass embedded therein. The inner mass can include an inner core and an outer shell. Multiple metamaterial members can be attached to form a modular system for absorption of sound and pressure.
Owner:WAYNE STATE UNIV

Spatial six-degree-of-freedom vibration measuring and damping vibration attenuating method

The invention discloses a spatial six-degree-of-freedom vibration measuring and damping vibration attenuating method. The method comprises the following steps of: 1) erecting six-displacement-sensor parallel measuring and damping vibration attenuating mechanism; 2) fixing a detected motion object and a fixed platform; 3) obtaining a motion variation rule by using an expansion variation displacement time of an expansion pull rod, and obtaining a vibration rule of the detected motion object by using a measurement algorithm with a positive solution; 4) obtaining a damping value of a six-degree-of-freedom controllable damper required by the vibration by using a damping vibration attenuating algorithm; and 5) adjusting the damping value of the six-degree-of-freedom controllable damper to a value obtained by the damping vibration attenuating algorithm. According to the invention, six-degree-of-freedom measurements of three vibration displacements and three vibration angles of the motion object at the same measurement point are achieved by using one set of mechanism; meanwhile, the vibration control of the motion object can be achieved; and the spatial six-degree-of-freedom vibration measuring and damping vibration attenuating method disclosed by the invention has the advantages of high accuracy, simple structure, good flexibility, strong adaptability, wide application range and the like.
Owner:LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS +1

Method for producing high-strength high damping concrete

The invention relates to a preparation method of concrete with high strength and high damp. The invention is characterized in that the preparation method includes the following steps: firstly, the pretreatment of the light aggregate: (1) the feeding and vibration reduction treatment of the light aggregate: the light aggregate adsorbs the polymer to obtain feeding and vibration reduction treatment light aggregate; (2) sealing and reinforcing treatment on the surface of the feeding and vibration reduction treatment light aggregate: the feeding and vibration reduction treatment light aggregate obtained at the first step is put into sealing and reinforcing treatment slurry to mix for 1 to 3 minutes, then being fished out, and then conserved for 3 days in the condition of 85 percent to 95 percent of relative humidity and the temperature of 23 DEG C to 27 DEG C, wherein, pretreatment light aggregate is obtained; secondly, preparation for the concrete with high strength and high toughness: the concrete with high strength and high toughness is formed by evenly mixing water, common coarse aggregate, the pretreatment light aggregate, cement, fine aggregate, mineral addition, fibre, emulsified polymer and high efficiency water reducing agent. The invention can effectively increase the strength and the damp performance of the concrete.
Owner:WUHAN UNIV OF TECH

Hinge

The invention relates to a hinge comprising a moveable hinge section and a hinge section consisting of a fixed stop section, which are interconnected by at least one joint axis, and comprising a damping device mounted on one of the hinge sections whose translationally or rotatably moveable damping member is acted upon at least in the closure region of the hinge via gear means from the other hinge section. According to the invention for adjustment of the moveable damping member depending on the tilt of the moveable hinge section relative to the at least one joint axis, there is provided at least three moveable gear members are provided, of which one is the damping member itself.
Owner:ARTURO SALICE

Lockup device and fluid type power transmitting device

The object of the invention is to provide a lockup device that can improve a fuel efficiency of a vehicle. The lockup device (6) has a piston (61), an output plate (63), a first coil spring (65), an inertia member (64), and a second coil spring (66). The output plate (63) is coupled to a turbine (4) such that it can rotate as an integral unit with the turbine (4). The first coil spring (65) elastically couples the piston (61) to the output plate (63) in a rotational direction. The inertia member (64) is provided such that it can rotate relative to the output member (63). The second coil spring (66) elastically couples the inertia member (64) to the output plate (63) in a rotational direction.
Owner:EXEDY CORP

Stator for a rotary electric machine

The present invention relates to a stator for a rotary electric machine, the stator comprising a stator body made up of a stack of stator laminations and first and second nested concentric disposed with clearance about the stator body. First resilient damping elements are placed between the two parts. These resilient damping elements are disposed circumferentially around the inner one of said two parts between the outer surface of said inner part and the facing inner surface of the outer part. Relative movement between the two parts is limited both axially and circumferentially by second damping elements.
Owner:MOTEURS LEROY SOMER

Footwear with improved sole assembly

An article of footwear, including a sole assembly and an upper, the article of footwear extending lengthwise from a rear end to a front end, widthwise between a lateral side and a medial side, and heightwise from the outer sole assembly to an upper end, the article of footwear including a first fitting element as well as a second fitting element. The first fitting element includes a first envelope and a first sole of the strobel type, the first envelope being fixed to the first strobel sole at least with stitching. The second fitting element includes a second envelope and a second sole of the strobel type, the second envelope being fixed to the second strobel sole at least with stitching.
Owner:SALOMON SA

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 coil (34; 130), a piston rod (13) having an inner end attached to the piston and an outer end extending out of the cylinder and a magnetic valve formed in a gap between the inner and outer yokes, at least one of the outer yoke and inner yoke consisting of at least two parts that are joined to each other in an axial direction. The two piece arrangement of the inner yoke or outer yoke allows the end plates to be omitted because the gap spacer can be installed without requiring end plates, and this contributes to a compact design and a favorable damping property. Also, the manufacturing and servicing of the damper can be simplified. When end plates (134) are used, the freedom in the positioning of the coil is increased.
Owner:HONDA MOTOR CO LTD

Film laminates having damping properties containing a sub-layer made of plasticizer-containing polyvinyl (iso)acetal

Film laminates are formed from at least three layers A, B and C, each containing at least one plasticizer and at least one polyvinyl acetal, wherein two outer layers A and C each contain at least one identical or different polyvinyl acetal having a proportion of polyvinyl alcohol groups of 18.5 to 23% by weight, at least one inner layer B contains a polyvinyl acetal having a proportion of polyvinyl alcohol groups of 12 to 18% by weight, and at least one of the layers A, B or C contains at least one polyvinyl (iso)acetal. The film laminates can be used for the production of glass / film laminate / glass composites for motor vehicles, aircraft, ships, architectural glazings, façade components, or for the production of photovoltaic modules.
Owner:KURARAY EURO GMBH

Resonator adopting counter-bored holes and method of suppressing combustion instabilities

A resonator for damping pressure waves or instabilities in a system supported by acoustic energy wherein the resonator adopts the use of counter-bored openings on the downstream side of the resonator within the flow path of the system. The resonator includes a first member and a second member where the second member includes a plurality of openings therethrough with each hole having a counter-bore on its upstream side. The first member has a size substantially smaller than the diameter of said flow path and a first plurality of openings therethrough. The openings are in fluid communication with the flow path. The second member has a size generally equal to the first member and a second plurality of openings therethrough, which openings are in fluid communication with the flow path.
Owner:SIEMENS ENERGY INC

Golf shaft for controlling passive vibrations

In the field of golf equipment, a new shaft design incorporates passive damping to suppress the vibrations excited in the shaft before and after impact. The design comprises a viscoelastic material sandwiched between multiple layers of composite plies which induce large shear strains in the viscoelastic when the shaft is subjected to bending, extension, or twist, thus increasing damping losses over conventional golf shafts. In one embodiment, the sandwiching layers are of opposing orientation. In another embodiment, the layers are oriented in an opposing V-shape laminate.
Owner:CABALES RAYMUND S +2

Wide temperature domain damping polyurethane micropore elastomer material and preparation method thereof

ActiveCN101519485AGood damping performanceMeet the needs of useElastomerPolyol
The invention provides a wide temperature domain damping polyurethane micropore elastomer material and a preparation method thereof; the formulation comprises 20 percent to 55 percent of polylol I, 5 percent to 38 percent of polylol II, 32 percent to 44 percent of isocyanate, 3.0 percent to 12.0 percent of chain extender, 0.10 percent to 0.30 percent of composite catalyst and 0.1 percent to 0.5 percent of foaming agent. The preparation method comprises the following steps: the polylol I and the polylol II are evenly mixed; the chain extender, the composite catalyst and foaming agent and other additives are added; the inner wall of a metal mold is coated with a releasing agent, heating and drying are carried out; and the mixture is added with isocyanate, is stirred with strong force, and the obtained mixture is cast into the mold, sealed, cured, cooled and demoulded so as to obtain the polyurethane micropore elastomer material. The invention adopts two types of polylol with large distance of molecular weight as polyurethane soft segment, leads the material to have excellent damping performance in the temperature range of -20 DEG C to 50 DEG C and can meet the use requirements under normal temperature condition.
Owner:INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS

Novel sea deep water buoy platform

The invention relates to an ocean working platform, in particular to a novel ocean deepwater floating pontoon platform. The structure of the platform comprises a platform deck for operating, wherein a hard cabin is connected under the platform deck; a plurality of mooring ropes are connected on the outer wall of the hard cabin, while the other ends of the mooring ropes are connected with a submarine anchorage ; a soft cabin is arranged under the hard cabin; the hard cabin and the soft cabin are connected through a cylindrical center well; a plurality of layers of heave plates are vertically arranged outside the center well; the heave plates along circumferential direction is symmetrically provided with a plurality of square holes; and a plurality of oil extraction vertical pipes pass through the center well to a submarine well mouth. Compared with the prior Spar platform, the novel ocean deepwater floating pontoon platform has strong supporting capability and low structure cost, and is applicable to abyssalpelagic operation with internal waves.
Owner:OCEAN UNIV OF CHINA

Seismic isolation apparatus

InactiveUS20060137264A1Prevent collapseStable damping capabilityStands/trestlesKitchen equipmentRubber ringEngineering
A seismic isolation apparatus features damping characteristics equivalent to or better than prior art, without burdening the environment. In this seismic isolation apparatus, a cylindrical cavity portion is formed at the middle of an outer side laminated body, which has a form in which respective pluralities of resiliently deformable rubber rings and metal rings for maintaining rigidity are alternately laminated. A helically formed coil spring is disposed in this cavity portion so as to be snugly fitted. An inner side laminated body, which has a form in which respective pluralities of resiliently deformable rubber plates and metal plates for maintaining rigidity are alternately laminated, is disposed at an inner peripheral side of the coil spring.
Owner:BRIDGESTONE CORP

Anodized aluminum golf club head and method of manufacturing same

An aluminum alloy product of extremely high hardness is conformable for use in the manufacture of various products, such as, golf clubs and pump partshaving a body or first layer of an aluminum alloy treated by successive precipitation hardening and reverse quenching to produce a hardness exceeding 140 HBN, and an outer alumina layer or surface coating is applied by hard-anodizing to a predetermined thickness on the first layer and being of even greater hardness than the first layer.
Owner:A R WILFLEY & SONS INC

Air bearing

It relates to an air bearing used for the super fine air flow movement system and coordinate measuring machine's movement parts. It features in the up cavity chamber, a lower cavity chamber and resistance formed air analog spring dual cavity structure designed in the middle of the air bearing to improve the resistance ability of the air bearing, to get over the long shock lessening period, unstable system, providing a highly stable air bearing, reducing outside vibrating force, shock and air bearing inherent micro vibration for the static and dynamic harm to overall movement system.
Owner:TSINGHUA UNIV

Process for preparing foam magnesium

InactiveCN1544671AImprove damping performanceGood anti-electromagnetic performanceMetallic materialsAlloy
The invention is a foam Mg preparing method, including smelting Mg alloy, making vacuum seepage device, selecting filling particles, preheating prefabricated model, casting and seeping, processing and molding, and eliminating filling particles, where the particle size of fillings is 16-120 eye, the preheating temperature of casting mould and prefabricated model 200deg.C- 550deg.C, and the casting temperature 700deg.C-730deg.C. It can use good sound absorbing property of foam metallic materials to solve the exhausting and silencing problems of motorcycle engines, and can act as sandwich material of airplane's structural components.
Owner:NANCHANG AERONAUTICAL ENG INST

Preparation of composite type light high-strength nickel-titanium memory alloy-based high damping material

The invention discloses a preparation method of a compound type light-weight high-intensity nickel-titanium memorial alloy base high damping material. In the method, a powder sintering method is mainly used as a foundation and a pressureless infiltration technology is used as assistance; a pore-creating technology is firstly adopted; and a unit metal powder cascade sintering method is used for preparing a porous nickel-titanium alloy the holes of which are uniformly distributed; and then the pressureless infiltration technology is adopted for inducing the pure magnesium or magnesium alloy phase with high intrinsic damping, low density and micron scale into the porous nickel-titanium alloy, thereby preparing the high-damping magnesium(or magnesium alloy) / nickel-titanium memorial alloy base compound material the damping control phase of which is magnesium or the magnesium alloy. The compound nickel-titanium memorial alloy prepared by the invention still has the shape memory effect and the superelasticity action as well as has weight lighter than that of the compact nickel-titanium memorial alloy and intensity and damping capacity more excellent than that of the common porous nickel-titanium memorial alloy. The preparation method has good technical suitability, simple preparation process and low cost, and can be used for manufacturing the light-weight high-intensity compound damping materials, damping structures and apparatuses.
Owner:SOUTH CHINA UNIV OF TECH

Antivibration device

An antivibration device is mounted between a motor unit (1) having an internal combustion engine (2) and a vibration-insulated unit (3) of a portable handheld work apparatus (4) such as a motor-driven chain saw, cutoff machine, suction / blower apparatus or the like. The antivibration device (5) includes a vibration damper (6) made of foamed elastic material (7).
Owner:ANDREAS STIHL AG & CO KG

Mixer suspension

An improved suspension apparatus and method for damping vibration arising in liquid vortex mixers of the type pivotably supporting a mixing frame assembly and suspending the assembly by at least one spring for mixing a liquid coating using both spin and orbital rotational movements. A pivoting support is located between the mixing frame assembly and a base. A damper in the form of an annular ring is used to damp pivoting movement of the mixing frame assembly. Various pivoting mounts may be used to pivotably support the mixing frame on a base. A bushing provides accommodation of a misaligned spring mounting end turn using a V-groove to retain the spring mounting end turn, and may include an eccentric feature to allow adjustment of the spring mounting length.
Owner:RED DEVIL EQUIP

Transparent gel adhesive agent, transparent gel adhesive sheet, and optical filter for display

A novel transparent adhesive agent is provided which allows a substrate and a surface material to be pasted together at room temperature, without requiring high temperature / high pressure treatment, and, furthermore, may confer an excellent damping property. A transparent gel adhesive is provided, wherein the transparent gel consists of a three-dimensionally cross-linked polymer swollen by a liquid containing a plasticizer and an inorganic fine particle, whose plasticizer is a fluid body with a solidifying point of −20° C. or below and a content of 20 to 70 weight percent, whose inorganic fine particles have a primary average particle diameter of 200 nm or less and contained in an amount of 1 to 15 weight percent, whose resin that constitutes the three-dimensionally cross-linked polymer has a glass transition temperature (Tg) of −20° C. or below, melt viscosity at 130° C. of 50,000 mPa·s or above, whose transparent gel has a holding strength of 5 mm or less at a load of 490 mN (50 gf)×2 hours and 40° C., in a test conforming to JIS Z0237.
Owner:MITSUBISHI PLASTICS INC

Chain tensioner

In a hydraulic tensioner, a tensioner housing is provided with an oil outflow channel communicating with a high pressure oil chamber formed by a plunger and the tensioner housing. A control valve in the oil outflow channel can be adjusted manually or automatically to optimize the damping performance of the tensioner in different engines and under different operating conditions, thereby obviating individualized machining of tensioner components to achieve optimum damping.
Owner:TSUBAKIMOTO CHAIN CO
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