1949results about "Machine frames" patented technology

A movable data center is disclosed that comprises a portable container in which an operable computer system is assembled. A data link, power supply link and cooling system are provided through ports on the exterior of the container. The computer system is assembled to a rack that is secured to the container with a shock absorbing mechanism.

A control system for a resilient support mechanism such as a suspension mechanism of a wheeled vehicle including a damper disposed between an unsprung mass member and a sprung mass member of the vehicle, wherein a damping coefficient of the damper is divided into a linear portion and a nonlinear portion, and wherein the nonlinear portion of the damping coefficient is defined as a control input u and applied with a frequency weight Wu(s), while a vertical velocity of the sprung mass member, a relative velocity of the sprung mass member to the unsprung mass member and a vertical acceleration of the sprung mass member are defined as an evaluation output zp and applied with a frequency weight Ws(s). In the control system, a nonlinear Hinfin control theory is applied to a generalized plant to obtain a positive definite symmetric solution P and to calculate a target damping force based on the positive definite symmetric solution P and a state amount such as the vertical velocity of the sprung mass member, a relative displacement of the sprung mass member to the unsprung mass member or the like.

An active vibration isolating support device for preventing the direct transmission of vibrations from an engine to a vehicle body frame includes an electromagnetic actuator for driving a movable member in a reciprocating fashion to change the capacity of a first liquid chamber. A shaft portion of an armature driven by a coil is supported by a bearing so that it moves along an axis, whereby the size of an air gap can be maintained as small as possible, thereby making it possible to miniaturize the coil. In addition, a connecting rod for connecting the movable member with the armature is supported so as to sway relative to a coil spring and a saucer spring, whereby the vibration of the movable member is prevented from being transmitted to the shaft portion of the armature.

A tunable vibration isolation device comprising a magneto-rheological elastomer (MRE), and methods of using such a device, are provided. By manipulating a magnetic field within the MRE the device's stiffness is controlled. The vibration isolator can be constructed to provide shock absorption in one, two and three dimensions. Coupling the tunable device to a sensor feedback and a control system provides fast and accurate vibration isolation and energy dissipation for shock events in a variety of applications.

A leveling mount is disclosed for equipment in temporary or permanent installations wherein the supporting surface can be a non-level planar surface. A ball and socket support stud provides a self-leveling adjustment of support. An elastomeric removable mount base pad provides non-skid means. Swivel and radial movement of the ball and socket support stud are maintained to about 15° from the vertical and 360° rotary movement of the leveling mount base. The leveling mount base can engage a threaded support stud affixed to the supported equipment. A suitable number of lag holes with knock-out covers over said lag holes are provided. The lag holes are in perpendicular alignment with parallel top and bottom configured surfaces of the leveling mount base to permit secure attachment of the leveling mount base to support surfaces to reduce to a minimum the presence of open holes, crevices, recesses and cavities in the juncture of the leveling device with the support surface. Additionally, the surface design of the leveling device base element is configured to present a clean unencumbered surface for cleaning procedures after the leveling device is secured in place by employment of securing elements including bolts, screws and washers.

A tunable vibration isolator with active tuning elements having a housing, fluid chamber, and at least one tuning port. A piston is resiliently disposed within the housing. A vibration isolation fluid is disposed within the fluid chambers and the tuning ports. The tunable vibration isolator may employ either a solid tuning mass approach or a liquid tuning mass approach. The active vibration elements are preferably solid-state actuators.

A vibration prevention footstand with an alignment structure comprises an upper base, a lower base, a sphere and a sliding sleeve. The sphere is arranged in an arc groove formed between the upper base and the lower base and makes point contact with the arc groove to achieve the vibration prevention effect. In addition, due to an inclined plane configured on the upper base and the sliding sleeve, the upper base and the lower base can be easily aligned and centered, and unnecessary correcting time waste is avoided.

A shock-absorbing platform includes a bottom plate and a top plate joined to one another along at least two sides by elongate rigid links that enable the plates to remain in parallel relation to one another as the plates are displaced responsive to externally-imparted forces. An air spring resists relative vertical motion between the bottom and top plates as external forces are applied to the platform. A shock-absorbing damper damps the natural oscillation of the air spring. The resistance presented by the air spring is adjustable through an inlet and outlet port in fluid communication with a remote source of air under pressure. In a second embodiment, a seat bottom includes arched leaf springs that supplant the air spring to increase the range of relative movement between the top and bottom plates and to lower the profile of the seat bottom.

A downhole tool assembly has a component that is sensitive to shock and vibration. A reciprocating element is coupled to the component. The reciprocating element has an axial internal passage and an outer surface. A housing has an internal axial bore for receiving the reciprocating element for axial reciprocal motion therein. A retainer is mounted to the housing and seals the housing between the component and the reciprocating element. A first spring is located between the housing and the reciprocating element. A second spring is located between the reciprocating element and the retainer. A first reciprocating seal is located between the reciprocating element and the housing. A second reciprocating seal is located between the connector and the retainer. A fluid is contained by the reciprocating seals inside the housing. The reciprocating element permits a limited amount of fluid to flow between sides thereof.

Methods and apparatus are provided for locking and releasing ends of a support strut coupled between a mounting platform and a load. In a preferred embodiment, the strut comprises a damping section coupled between the ends and having a gap therein when the strut is unlocked, a locking section coupled between the ends for closing the gap by applying stress to a portion of the damper section through a force transmitting member, and a releasing section coupled in parallel with part of the force transmitting member, the releasing section including a Shape Memory Alloy (SMA) and heater therefore. Heating the SMA relieves the stress and opens the gap. Release from the locked condition occurs gradually and without fracture or sudden shock and the heater can be actuated remotely. In a preferred embodiment, a worm drive turnbuckle arrangement is used to apply force to lock the strut.

A foot for adjusting the height of an appliance such as, for instance, a dishwasher or washing machine, provided with a threaded shank and a sprocket seated thereon for rotation relative thereto. The sprocket may be shifted between a first orientation in which the shank may be rotated while the sprocket is secured against rotation to adjust the height of the appliance by translatory movement of the shank and a second orientation in which the sprocket may be rotated and the shank is secured against rotation but is free to move axially.

Provided is a vibration damping material comprising: a polyester resin containing dicarboxylic acid constitutional units and diol constitutional units; and mica being dispersed in the polyester resin, wherein: (1) a ratio [(A₁+B₁)/(A₀+B₀)] of a total of (A₁) a number of the dicarboxylic acid constitutional units having an odd number of carbon atoms in a polyester main chain and (B₁) a number of the diol constitutional units having an odd number of carbon atoms in the polyester main chain with respect to a total of (A₀) a number of total dicarboxylic acid constitutional units and (B₀) a number of total diol constitutional units in the polyester resin is in the range of 0.5 to 1; and (2) an average particle diameter calculated from a volume-based particle diameter frequency distribution of the mica in the vibration damping material is 25 to 500 μm. The damping material has a high versatility, is lightweight, shows an excellent vibration damping property and can be produced easily with a batch mixer.

An adjustable support apparatus, for elevating a furniture article, includes a base and a cradle which operatively engages the base so as to be supported thereby. The cradle includes a substantially horizontal support platform adapted to support a portion of a furniture item thereon. One of the base and the cradle has a plurality of projections extending outwardly thereon, and the other of the base and the cradle has a plurality of recesses, which mate with the projections when the base and the cradle are operatively engaged. The base and the cradle are rotatably adjustable relative to one another, to variously engage the projections and recesses and thereby establish multiple different height positions of the cradle support platform. The apparatus is used to adjustably raise the height level of a furniture article, particularly a bed, by placing individual supports according to the invention underneath the respective leg posts of the furniture article.

Active hydraulic anti-vibration mount comprising two support elements connected by an elastomer body partially delimiting a working chamber filled with liquid, this working chamber communicating by a throttled passage with a compensation chamber separated from said working chamber by a rigid partition. The rigid partition is penetrated by a first regulating nozzle closed by a movable exciting device, and a second regulating nozzle closed by a valve the movements of which are limited to correspond to an amplitude of variation in the volume of the working chamber which is less than 20% of the amplitude of the variations in volume generated by the exciting device.

To form a relief valve for preventing the generation of the cavitation phenomenon into a simple and accurately operable structure, there are provided a central thin wall portion and a fixing portion in an elastic diaphragm provided in the partition member to have the fixing portion fixed in position. A relief valve is integrally formed with an outer peripheral portion of the fixing portion. The relief valve is provided with an inclined surface formed on the side of a secondary liquid chamber and a recessed portion opened on the side of a primary liquid chamber and has a difference in rigidity in the circumferential direction. When the primary liquid chamber turns negative pressure, a hydraulic liquid in the secondary liquid chamber opens the relief valve and leaks to the primary liquid chamber so as to prevent the generation of the cavitation phenomenon.

An anti-vibration support comprising two rigid frames joined to one another by an elastomer body which is applied against a rigid partition to define a hydraulic working chamber linked to a compensating chamber by a throttled passage. The liquid contained in the working chamber is in contact with a piston controlled by an electromagnetic actuator with a proportional electromagnet.

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.

A support (10) is disclosed for use with food service equipment. The support has a tubular upper portion (11) and a tubular lower portion (12) telescopically mounted within the upper portion for adjustable vertical movement. The upper portion has a plastic support body (15) surrounded by a stainless steel support sleeve (16). A steel, externally threaded stud (17) is mounted to the support body. The lower portion includes a stainless steel, tubular foot (22) having a plastic glide (23) press fitted into its lower end and metal insert (24) mounted in its top end. The metal insert has internally threaded, central channel (25) extending completely therethrough. The insert is threaded onto the bottom end of the threaded stud for threaded vertical movement along the stud.

The invention relates to an adjustable sizing block. At present, an adjustable sizing block capable of being used in overloading environments and environments requiring frequent adjustments is not provided. The adjustable sizing block is characterized by comprising a base, a slide block, an adjusting screw rod, a fastening nut and a lifting wedge block, wherein a slide block sliding cavity, an adjusting screw rod hole, a base through hole and a horizontal limiting port are formed in the base; the top surface of the slide block is an upper inclined plane of the slide block, and a slide block through hole and an adjusting screw hole are formed on the top surface of the slide block; the slide block is positioned in the slide block sliding cavity; the slide block through hole is positioned right above the base through hole; the adjusting screw rod is penetrated into the adjusting screw rod hole, and is connected with the adjusting screw hole through threads; the fastening nut is connected to the adjusting screw rod through threads; the bottom surface of the lifting wedge block is a lower inclined plane of the wedge block, the top surface of the lifting wedge block is an upper plane of the wedge block, and a wedge block through hole is formed on the top surface of the lifting wedge block; the lifting wedge block is arranged on the slide block; the wedge block through hole is positioned right above the slide block through hole; and the lifting wedge block is positioned in the horizontal limiting port. The adjustable sizing block is easy to operate, and is applicable in the overloading environments and the environments requiring frequent adjustments.

Spring-mounted vibration system to reduce vibration with a first spring-mounted part and a second spring-mounted part, wherein the first spring-mounted part and the second spring-mounted part can oscillate relative to each in at least one vibration direction and at least one of the spring-mounted parts can be exposed to a return force on a vibration movement. A control unit is arranged with at least one travel linkage which is connected with at least one of the spring-mounted parts and in which is arranged displaceably at least one guide element connected with a spring element generating the return force and/or the other spring-mounted part.

A suspension system for a seat assembly of a machine includes an upper support member and a lower support member. An array of fluid chambers is operatively connected to the upper and lower support members. Each of the fluid chambers includes an electronically controlled valve for controlling an amount of fluid within the fluid chambers. An elastomer is coupled between the upper support member and the lower support member. An electronic controller is in communication with each of the electronically controlled valves and is configured to actuate the valves in response to a movement of the machine.

A method includes the steps of: detecting “starter ON” by IG-SW signal (step S12); calculating an moving average value T_CRKAVE of crank pulse intervals (steps S13-S17); determining engine starting when the T_CRKAVE is less than or equal to a threshold value T_th (step S19); and controlling a vibration isolating support unit M based on a natural vibration frequency of the engine when engine starting is determined (steps S20-S22).

A fixture is isolated from the transmission of vibration emanating from a vibration source by a damper containing magneto-rheological (“MR”) fluid and a plunger mechanically coupling the damper and the fixture. The isolation apparatus is mechanically coupled to the vibration source. The viscosity of the MR fluid contained in the damper is controlled by a magnetic field produced by the vibration of an isolation system responsive to the vibration of the vibration source. The resonant frequency of the isolation system is adjusted to approximate that of the fixture.

A suspension system for a seat of a vehicle comprises a base, a linkage, and a seat attached to the base via the linkage. A pneumatic shock absorber provides a respective resistance level against movement of the seat with respect to the base based on a corresponding pressure level of air or gas within the pneumatic shock absorber. A set of cylindrical members are spaced apart beneath the seat. A tension member is arranged to engage the cylindrical members. The tension member is attached to the seat via a bracket. An electric motor is capable of driving one of the cylindrical members. A first sensor is arranged to detect first sensor data associated with an instantaneous position of the seat versus time. A controller generates a first control signal for the electric motor to change a height of the seat in opposition to a change in the instantaneous position of the seat and a second control signal to change the pressure level.

A leveling assembly for an appliance is provided. The leveling assembly includes a clench nut mounted to the appliance and a jam nut. The clench nut and the jam nut each have a knurled surface. A leveling leg is threaded through the clench nut and the jam nut such that the knurled surfaces of the clench nut and jam nut are facing. The knurled surfaces of the clench nut and jam nut can engage one another to lock the leveling leg in position by impeding rotation of the leveling leg.

An active vibration reduction system for a vehicle for suppressing a vibration from a vibration source includes a vibration suppression signal generating unit for generating a vibration suppression signal having a frequency being synchronous with the vibration from the vibration source, a sensible signal generating unit for generating a sensible signal having a frequency being asynchronous with the vibration from the vibration source, a magnetic pole forming magnetic flux, a coil provided in a manner that intersects the magnetic flux, and a coil driving circuit relatively vibrating the magnetic pole and the coil by controlling an energized state of the coil based on the vibration suppression signal and the sensible signal.

A buckling restrained brace includes an elongate, hollow sleeve, an elongate yielding core extending substantially through the length of the sleeve, and a buckling constraining element between the yielding core and the inner surface of the hollow sleeve and spaced apart from at least one surface of the yielding core, leaving a gap therebetween. The buckling constraining element may be spaced apart from and, thus, the gap may exist between two or more surfaces of the yielding core. Additionally, an inner sleeve, or liner, may be positioned between the buckling constraining element and the yielding core, with the liner being spaced apart from at least one surface of the yielding core. The buckling restrained brace is useful in absorbing loads, such as seismically induced loads, that are exerted upon a steel frame.

Disclosed herein is a smart vibration absorber for traffic signal supports. In exemplary embodiments, the vibration absorber utilizes the mass of the signal head as a damped vibration absorber. The system may also include a spring and damper in mechanical communication with the signal head. The spring provides resistance to the compression force of the signal head while the damper provides a damping force removing energy from the system. Also disclosed herein is a controllable damper which may be connected to a computing device for varying the damping of the system. The controllable damper may be a magneto-rheological fluid damper. The smart vibration absorber may be constructed as a retrofit for installation on current traffic signals supports.

Disclosed are a vehicle mount to be installed between the body and the frame of a vehicle or the engine and the frame, and a method of manufacturing the mount. The vehicle mount includes an inner sleeve and an outer sleeve surrounding the outer face of the inner sleeve with a space in-between. A first insulation rubber is installed between the inner sleeve and the outer sleeve and forming an internal space in-between. The first insulation rubber has an inner sleeve insertion hole into which the inner sleeve is inserted. The first insulation rubber is contracted or expanded to attenuate external vibration and change a shape of the internal space according to an applied load. A space divider is installed in radial direction inside the internal space to divide the internal space into an upper first internal space and a lower second internal space. The space divider is provided at least one side thereof with an orifice connecting the first and second internal spaces to each other. A fluid is filled in the internal pace. The fluid flows between the first and second internal spaces depending on a difference in pressures exerted on the first and second internal spaces to attenuate external vibration. The vehicle mount provides an axial hydraulic damping effect and its axial and radial rigidities can be adjusted.

A fluid-filled vibration damping device including: an elastic body connecting a first and a second mounting member, defining a pressure receiving chamber undergoing pressure fluctuation during input of vibration; an equilibrium chamber defined by a flexible layer for permitting its volume change; an orifice passage connecting the pressure receiving chamber and equilibrium chamber; a movable member; and a short passage for connecting two chambers with a length smaller than that of the orifice passage. When pressure in the pressure-receiving chamber increases, the movable member is displaced or deformed toward to close the equilibrium-chamber-side opening of the short passage to have the short passage substantially closed, while when pressure in the pressure-receiving chamber decreases, the movable member is displaced or deformed to have the short passage operative.