Abstract: A foundation shock eliminator includes an upper block, a lower stationary base, an interconnecting assembly and an energy damping coating. The lower stationary base is mounted under the upper block. The interconnecting assembly is mounted between the upper block and the lower stationary base and includes an upper track, a lower track and a track joint. The upper and the lower tracks are respectively attached to the upper block and the lower stationary base and are arranged in a cross. The track joint is slidably mounted between the tracks. The energy damping coating mounted in the foundation shock eliminator absorbs shock energy. Consequently, the upper block will move relative to the lower stationary base to counterbalance the most horizontal shock effects and cooperates with the energy damping coating absorbing the shock energy in both horizontal and vertical directions so that reduction of shock is efficient.

Abstract: A power plant mounting apparatus includes a mount member that enables a side member of a vehicle to support a power plant. The mount member has a supporting member whose one end is fixed to the power plant. The supporting member has a shaft portion at the other end thereof which is disposed within an outer tube. An insulator is provided between the shaft portion and the outer tube. A bracket of a flat plate-shape attached to the outer tube is fastened to an inner side surface of the side member by means of a bolt. A center point of the shaft portion within the outer tube is positioned within the side member.

Abstract: The invention provides an improved air chiller unit mounted on an aircraft for sending cooled air to service carts used for serving meals. An air chiller unit 1 includes a refrigeration cycle unit housed in a casing 10. The refrigeration cycle unit comprises a compressor 20, a condenser 30 and an evaporator 40 for a refrigerant, and the cooled air is sent to a galley via a blower device 60. The casing 10 is formed of honeycomb panels. The compressor 20 is supported via a pair of vibration isolation mounting devices 26 on a base plate of the casing 10. The vibration isolation mounting device 26 is formed of a triangular prism-shaped bracket and an A-shaped vibration isolation rubber, which functions to isolate vibration at normal times, and when a large load is received, functions to support the compressor device 20 with high spring constant with the rubber vibration isolator compressed.

Abstract: A fastener assembly includes a grommet, a dampening subassembly, and a pin. The pin is secured to the grommet and the dampening subassembly. The pin is configured to rotate between a locked position and an unlocked position with respect to the grommet. The pin secures to the grommet in the locked position, and is removable from the grommet in the unlocked position.

Abstract: A drilling system includes a stationary base table for supporting a work piece under process at a fixed position at a drilling spindle station. A drilling spindle carries and applies rotational force to a drilling tool. A compound overhead guiding system carries the spindle above the work piece under process. The overhead guiding system includes a Y drive system for moving the spindle along a Y axis in relation to the base table, and an X drive system for driving the spindle along an X axis. The guiding system has a lightweight laminated crossbeam structure for carrying the spindle and X axis drive system.

Abstract: A vibration reduction apparatus for an engine. The vibration reduction apparatus being incorporated into an engine mounting assembly as a connecting member. The engine mounting assembly including an engine block fastened at its bottom to an engine mounting structure, and the connecting member being connected between the engine block and the engine mounting structure. The connecting member is fastened to both the engine block and the engine mounting structure to further secure the engine to the engine mounting structure and to reduce vibrations caused by the engine on to the engine mounting structure.

Abstract: A system for dampening vibrations of a plurality of disk drives in such a way that the packaging density of disk drives is optimized. This is achieved by attaching a device for dampening vibrations to a population set of disk drives. The population set of disk drives comprises a plurality of disk drives. The device for dampening vibrations comprises at least one rail assembly. A plurality of isolators is attached to the rail assembly. The isolators are composed of materials that attenuate vibration. The isolators dampen the vibrations of the population set and isolate the population set from external vibrations and shock.

Abstract: An engine mount including a rubber elastic body connecting an upper and lower mounting plate fixture and a rebound stopper mechanism having an upper stopper integrally formed with an upper mounting plate fixture and a lower stopper integrally formed with a lower mounting plate fixture. The upper stopper is bolted to a power unit at a position deviating more toward the inside of the power unit than a position of an elastic main axis of the rubber elastic body on the upper mounting plate fixture so that the stopper mechanism in the rebound direction is positioned generally vertically below the position where the upper stopper is bolted to the power unit, whereas the lower stopper is bolted to the vehicle body at a position deviating more toward the inside of the power unit than the position of the elastic main axis of the rubber elastic body on the lower fixture.

Abstract: A damper component for absorbing and dissipating vibration and/or noise resonating from a device is provided. The damper component includes a viscoelastic damper layer, and a continuous constraining layer intimately contacting and encasing the damper layer. The constraining layer has a greater stiffness and higher modulus of dynamic shearing elasticity than the damper layer. The constraining layer is a molded sheet molding compound that is substantially immiscible with the viscoelastomer to provide a discrete interface between the constraining layer and the damper layer.

Abstract: A vibrating table assembly for an apparatus for filling and weighing bulk bags comprises a bag support table, a vibrating device for vibrating the bag support table, and a lifting device for raising an lowering the bag support table, the lifting device being located below the bag support table. Preferably, the lifting device comprises a convoluted air bellows. Location of the lifting device below the table overcomes problems encountered with known bag filling apparatus where the bag support table and the lifting mechanism are connected to the frame of the apparatus.

Abstract: An apparatus, system, and method for configuring a dual isolation system lithography tool is described. An isolated base frame is supported by a non-isolated tool structure. A wafer stage component is supported by the isolated base frame. The wafer stage component provides a mount for a semiconductor wafer. A reticle stage component is supported by the isolated base frame. The reticle stage component provides a mount for a reticle. An isolated bridge provides a mount for a projection optics. The isolated bridge is supported by the isolated base frame. Alternatively, an isolated bridge is supported by a non-isolated base frame. A wafer stage component is supported by the non-isolated base frame. A reticle stage component is supported by the non-isolated base frame. An isolated optical relay is supported by the non-isolated base frame. The isolated optical relay includes one or more individually servo controlled framing blades.

Abstract: A shock and vibration isolator for a movie or video camera has a vertical axis system including a base, an arm pivotably attached to the base, and at least one spring connected to the base and to the arm. One or more dampeners are connected to the base and to the arm. A horizontal axis system is supported by the vertical axis system. A leveling linkage connects the vertical and horizontal axis systems. The leveling linkage has adjustment features that allow for compensation of camera lens angulation caused by movement of the camera supported on a vehicle rolling over rough or uneven ground. A camera or camera head is suspended, like a dampened pendulum, on the horizontal axis system.

Abstract: A device is provided for dampening compressor-induced vibration in an air conditioning system of the type having an indoor unit, an outdoor unit and a refrigerant conduit therebetween. The outdoor unit includes a compressor that is operable to circulate a vapor compression refrigerant through the conduit between the indoor and outdoor units. The device is comprised of a support member containing a section of refrigerant line. The support member is located beneath the outdoor unit and the refrigerant line section is interposed in a portion of the refrigerant conduit between said compressor and said indoor unit, such that the refrigerant flowing between the indoor unit and the compressor is routed through the line section in the outdoor unit support member.

Abstract: A support system for an air handling unit (AHU) including a first rail supporting the AHU and a second rail supporting the first rail. A vibration isolator is disposed between the first rail and the second rail to vibrationally isolate the AHU from the second rail. The vibration isolator includes a spring secured between opposed spring retainers. An adjusting member threadedly receives the upper spring retainer. The first rail structurally carries the guide member along at least two positions. An angle is secured to the second rail, and the second end of the structural member slidably engages the guide member. Rotating the adjusting member with respect to the spring retainer in one direction compresses the spring between the spring retainers to support the weight of the first rail and the AHU. The angle constrains the AHU to movement along the guide member.

Abstract: A machine tool for performing a machine tool function including components adapted to cooperate with each other to execute the machine tool function. The machine tool has a number of constituent parts and a number of sheets of damping material. Each component includes constituent parts with sheets of damping material interposed between the constituent parts. The sheets dampen vibration of the machine tool during performance of the machine tool function.

Abstract: The invention provides a vibration isolation mount for a motorized garage door opener system. The mount includes a substantially planar first mounting plate with apertures configured for mounting to structure inside a garage, and a substantially planar second mounting plate with threaded bolt shafts or other mounting elements configured for mounting to motor mounting structure mounted to a drive motor for use in the system. A vibration isolation material, which may be a natural or synthetic rubber, is disposed between the first and second mounting plates to isolate noise and vibration produced by the motor from the structure mounting the assembly to the interior of the garage.

Abstract: A vibration isolation device for isolating a vibration source from a carried member, includes: a carrier for carrying the carried member; a housing positioned on the vibration source, and formed with an accommodating space; a cover for sealing an open end of the housing; a base mounted in the accommodating space, and extended through the cover to be connected to the carrier; a plurality of connecting members mounted in the accommodating space and around the base, wherein each of the connecting members is connected to the base and the cover; and a plurality of actuators provided in the connecting members respectively, for changing vibration of the connecting members and the base when the vibration source vibrates, so as to minimize vibration of the carrier, thereby achieving the effect of isolating vertical and horizontal vibrations.

Abstract: A stable platform supports a cell, the stable platform comprises a lower mainframe, an upper mainframe, and a dampener system. The upper mainframe includes a plurality of recesses. Each recess is configured to receive a cell. The dampener system connects the lower mainframe to the upper mainframe. In one embodiment, the dampener system comprises a dampener element, such as sand, to dampen vibrations between the lower mainframe and the lower mainframe.

Abstract: A support system, a bracket assembly, and a damping member for use in supporting a rotating shaft. A support system including a fixed bracket; a bracket assembly; and a bearing. The bracket assembly having a first damping member having a first fixed end and a second movable end, the first fixed end being securably attached to the fixed bracket and the second movable end being movable in a first plane aligned with the shaft. The bracket assembly further having a brace securably attached to the second movable end of the first damping member. The bracket assembly further having a second damping member having a first end and a second end, the first end being securably attached to the brace and the second end being movable in a second plane that is aligned with the shaft and is generally perpendicular to the first plane.

Abstract: A vibration isolation system (100) for a payload (102). The vibration isolation system provides a level of vibration isolation for all vibration translational and rotational components, while minimizing the moment of the payload mass relative to the isolation system. The system includes a base (104) and a plurality of vibration isolators (114). Each vibration isolator includes a semi-rigid first support member (202) having first portion (204) positioned below the base and an opposing second portion (206) positioned above the base, and a second support member (208) having a first portion (210) fixed to the base and an opposing second portion (212) extending above the base. An elastomeric coupling (228) couples the first support member to the second support member at a height that is approximately equal to a height of a center of gravity (302) of a combined mass of the base and the payload above the base.

Abstract: An anti-vibration platform for supporting a semiconductor equipment is constructed from a plurality of top and bottom ball couplings having threaded holes provided thereon, a plurality of rigid connecting bars separately horizontally or diagonally connected at two externally threaded free ends to two of the ball couplings, and a plurality of vertical supports separately connected at two externally threaded free ends to two vertically corresponding ball couplings. Steel plates are provided at a bottom and four sides of the platform, and threaded bars are provided to extend through the side steel plates to connect the platform to a concrete foundation. Anti-vibration and pressure-resistant elastomeric material is applied to the bottom of the platform to wrap joints of the bottom ball couplings, the connecting bars, and the vertical supports. A flat bed is positioned to a top of the platform by screwing to the top ball couplings.

Abstract: A method and system for calculating a control function for a structural system (10) that can be used to determine an appropriate control force to apply to an active member (18) within a stationary member (12) on the structural system (10). An active member (18) and a stationary member (12) are defined as a two-mass system in which the active member (18) and the stationary member (12) move in opposite directions. The stationary member (12) is mounted to an isolation subsystem (14) that is composed of six isolators (28) at multiple degrees of freedom. The isolation subsystem (14) is softer than the stationary member (12), active member (18) and a spacecraft surface (16) due to a damping element (32) of the isolation subsystem (16). The isolation subsystem (16) is mounted to the spacecraft (16) and decouples the spacecraft (16) from the stationary member (12) and thus the active member (18). An accurate control force for the active member (18) can be determined based upon the above structure (10).

Abstract: A chassis for receiving a plurality of disk drives includes a plurality of disk drive receiving stations. Each station is configured to carry out testing and/or servo writing operations on a received disk drive. Each station includes a base, a nest assembly and a plurality of elastomeric mounts that elastically couple the nest assembly to the base to enable movement of the nest assembly relative to the base. The nest assembly includes a nest configured to receive and mate with the disk drive and a printed circuit board. Each station includes a separate vibration isolating mass that is coupled to the nest. The vibration isolating mass at least partially isolates vibrations originating within the nest from being transmitted through the elastomeric mounts to other nests in the chassis and at least partially isolates vibrations originating outside the nest from being transmitted through the elastomeric mounts to the nest assembly.

Abstract: A lithographic apparatus includes an illumination system for providing a beam of radiation. The lithographic apparatus further includes: a support structure for supporting patterning device, the patterning device serving to impart the beam with a pattern in its cross-section; a substrate table for holding a substrate; and a projection system for projecting the patterned beam onto a target portion of the substrate. The lithographic apparatus includes a vacuum system in which at least the illumination system and the substrate table are present. The vacuum system includes at least two separate vacuum modules. A first vacuum module includes at least the projection system and/or the illumination system. A second vacuum module includes the substrate table. At least two of the vacuum modules are connected to each other via a closable connection.

Abstract: A supporting apparatus includes a supporting member configured to support a movable member, an acceleration sensor configured to detect acceleration of the supporting member, an actuator configured to drive the supporting member, a memory configured to memorize offset data for the acceleration sensor, an offset unit configured to offset an output of the acceleration sensor in accordance with the offset data in the memory, a discrimination unit configured to discriminate whether the offset data should be renewed or not on the basis of an output of the acceleration sensor, and a renewing unit configured to renew the offset data on the basis of the result of the discrimination made by the discrimination unit.

Abstract: A support leg for an equipment case is made of a support leg main body and a stand base. The main body defines a concave (recessed) portion in the bottom thereof. A spire head portion that defines a spike is disposed in the concave portion so the spike does not extend beyond the bottom of the main body. Optionally, cushioning material is attached to the bottom of the main body to protect a surface on which the support leg breasts, while the support leg is used without the stand base. Optionally, the stand base is loosely attached to the support leg, such as by one or more screws.

Abstract: A mounting arrangement for mounting a component on a mounting plate has an elastic ring whose inside comprises a circumferential surface structure. The ring has two axial holes for fastening the ring on the mounting plate, and the ring has a radial slot that separates the ring between two end sections, so that the ring can be spread apart and then clamped around a component. The mounting arrangement is useful for mounting cylindrical components such as electrolytic capacitors that comprise a bead in the region of the floor on a mounting plate.

Abstract: A machinery is disclosed that comprises a movable body that moves linearly with respect to a main body and an active damper for controlling an inherent vibration of the movable body occurred in a direction of movement of the movable body, the active damper comprising a sensor, provided with the movable body, for detecting the inherent vibration currently occurred in the direction of movement of the movable body, among one or a plurality of the inherent vibrations of the movable body; an actuator, provided with the movable body, for generating a vibration in the direction of movement of the movable body; and a controller for allowing the actuator to generate the vibration having a negative phase relationship with respect to the inherent vibration detected by the sensor.

Abstract: A camera crane has a boom arm pivotably connected to a post assembly. A track section is pivotably attached to the front end of the boom arm, and is leveled via leveling rods. The boom arm has a joggled section to provide clearance for a camera operator. A camera frame carrying a camera is linearly moveable along the track section. Pivot joints provide for adjustable drag on pivoting movement, without backlash or slip/stick movement.

Abstract: A seismically restrained vibration isolating mounting device seismically restrains and vibrationally isolates equipment which is supported by an equipment support means, from the equipment mounting surface. This seismically restrained vibration isolating mounting device is comprised of a three-axis snubber mounted to the equipment mounting surface and which restrains the equipment support means; and a vibration isolator, wherein the equipment support means is supported by the vibration isolator and wherein the vibration isolator is supported by the equipment mounting surface, wherein the vibration isolator acts in the direction of gravity, and wherein the three axis-snubber is closer to the equipment supporting surface than the vibration isolator, and the vibration isolator is external to the three-axis snubber.

Abstract: An anti-vibration system includes a supporting member for supporting a driving mechanism, an acceleration sensor for detecting acceleration of the supporting member, a driving unit for driving the supporting member, a storing unit for memorizing offset data to be used for offsetting an output of the acceleration sensor, an offset unit for offsetting an output of the acceleration sensor in accordance with the offset data memorized in the storing unit, a control unit for producing a driving signal in relation to the driving unit, on the basis of an output of the offset unit, a renewing unit for renewing the offset data during a non-driving period of the driving mechanism, on the basis of an output of the acceleration sensor, a discrimination unit for discriminating whether the offset data should be renewed or not, during the non-driving period of the driving mechanism, on the basis of an output of the acceleration sensor, in which the renewing unit renews the offset data in response to an affirmative discrimina

Abstract: A removable hard disk module is described. The removable hard disk module has a module sidewall, a first sliding device, and a second sliding device. The first sliding device and the second sliding device are fixed on the module sidewall and the second sliding device is disposed behind the first sliding device. The first sliding device further has a buffer device and a convex surface for contact with a slim slide. An inner portion of the first sliding device and a rear end of the slim slide further include shock absorption rubbers. The slim slide is configured on a module fixing device and the module fixing device is installed in a server rack.

Abstract: A hull (11) has mounted thereon a number of accelerometers (20) arranged to provide a data signal corresponding to movement or vibration of the hull (11) to which each is fixed. The hull (11) and/or a thrust block (18) has mounted thereon a number of mass dampers (21) that are controlled by a detector (23) arranged between the accelerometers (20) and mass dampers (21). The detector (23) calculates from the data signal generated by the accelerometers (20) different modes of resonance so as to determine the onset of the excitation of a particular resonance mode and controls the mass dampers (21) so as to generate forces to selectively dampen the resonance mode.

Abstract: An energy dissipative element protects hard disk drives from shocks and vibrations. A closed elastic envelope houses a body of open cell foam, a volume of viscous liquid, and a compressible gas. Under compression or expansion of the foam, viscous liquid flows through cell orifices and thereby dissipates energy resulting from external force applied against the elastic wall. The energy dissipative elements are applied between a disk drive housing and an outer case to create a ruggedized portable disk drive module.

Abstract: An improved piping structure of an air conditioner can minimize a vibration by change in a piping shape in looped pipings. In the piping structure, a first directional piping part configured on a same plane is changed to be slanted at a predetermined angle on one end thereof, to be displaced onto a third plane, and to be connected with a second directional piping part configured on a different plane from that of the first directional piping part. Further, the piping structure comprises a vertical piping part wound in an up and down direction and a horizontal piping part connected to the vertical piping part having one end changed at a predetermined slant angle.

Abstract: The invention provides an active mass damper by use of which a machining apparatus can be downsized. The active mass damper includes a support unit for supporting a weight movably and horizontally, a motor for driving the weight, and a controller for controlling the motor. A torque command signal to be given to a motor of an X-table and a torque command signal to be given to a motor of a Z-table are put into the controller of the active mass damper so that the motor for driving the weight can be driven by feed-forward control using the torque command signals and feedback control based on the displacement of the weight.

Abstract: A tuned cradle type damping deice which can be tuned with low-order (e.g., 1 Hz or lower) vibration, and exhibits higher performance for maintenance and inspection with a simple constitution than a conventional one. This tuned cradle type damping device comprises: a support having a circular-arc support surface which is at least a part of a circle; two swings positioned on both outsides of a center axis extending direction of the circular-arc support surface of the support; and two rollers which are rotatably supported on the circular-arc support surface to be rolled thereon and moved around the center axis thereof, and both ends of which are rotatably connected to the two swings to support the two swings.

Abstract: A mount for a vibration structure includes a ring having a flexural portion defining an arcuate mounting surface terminating at a free distal end and secured to an arcuate bearing surface on a flange of the vibration structure in coaxial bearing engagement therewith, the flexural portion having a radial stop surface spaced from the distal end and contacting an end surface of the vibration structure flange. Attachment structure on the mounting ring is adapted for attachment to an associated support. The flexural portion is resonant at the resonant frequency of the vibration structure and is shaped and dimensioned for flexing sufficient to accommodate movement of the bearing surface at resonance.

Abstract: An arrangement for holding a particle beam apparatus such as a transmission electron microscope. The arrangement is sufficient for receiving a good resolution in the area of 1 ? or less, said arrangement still being under more or less no influence of the environment, in particular, building vibrations. In one embodiment, the arrangement comprises a base structure comprising a plurality of hollow bodies, at least one of said hollow bodies having a first length extension in a first direction, a second length extension in a second direction and a third length extension in a third direction, said first length extension being larger than said second and third length extensions, and wherein a cross section of said at least one of said hollow bodies perpendicular to said first direction is substantially triangular. Due to the hollow body shape, a very stiff structure is provided with a very good eigenfrequency.

Abstract: A table assembly that includes a snubber coupled to both a table and a vibration isolator. The snubber limits relative movement between the table and vibration isolator so that the isolator can more quickly damp movement by the table. The snubber reduces the settling time of the table when subjected to shock and/or vibration loads. The snubber may include one or more rollers coupled to an elastomer.

Abstract: An antivibration link for isolating two parts, the link comprising a rigid body extending in a longitudinal direction between a first end provided with a sleeve and a second end, a first antivibration joint arranged in the sleeve and presenting a central axis perpendicular to the longitudinal direction of the body, and a second antivibration joint arranged on the second end and presenting a central axis perpendicular both to the central axis of the first joint and to the longitudinal direction. The second end of the body has two branches extending from an intermediate base portion of the body away from the sleeve along the longitudinal direction and interconnected by a bridge extending along the central axis of the second joint, the second joint being arranged around the bridge.

Abstract: An apparatus and method for high speed phase modulation of optical beam with reduced optical loss. In one embodiment, an apparatus includes a first region of an optical waveguide disposed in semiconductor material. The first region has a first conductivity type. The apparatus also includes a second region of the optical waveguide disposed in the semiconductor material. The second region has a second conductivity type opposite to the first conductivity type. A first contact is included in the apparatus and is coupled to the optical waveguide at a first location in the first region outside an optical path of an optical beam to be directed through the optical waveguide. The apparatus also includes a first higher doped region included in the first region and coupled to the first contact at the first location to improve an electrical coupling between the first contact and the optical waveguide. The first higher doped region has a higher doping concentration than a doping concentration within the optical path.

Abstract: The present invention relates to an elastic member and apparatus for a refrigerator compressor. A vibration absorption apparatus for a refrigerator compressor according to the present invention is connected to a foot of the compressor for transmitting the vibration generated when the compressor is operated, and includes an elastic member having a hollow passing through the central portion in an axial direction is formed; a base pan installed on a bottom of the refrigerator machinery room, for supporting the elastic member; a stand coupled with the base pan and passing through the hollow of the elastic member; and a stopper installed on the stand, for preventing the elastic member from being escaped from the base pan. The elastic member comprises a body having a plurality grooves enclosing an inner surface and outer surface thereof to have a vertical section in a zigzag; a projection of an upper portion of the body to which the stopper is forcedly attached; and a base being a lower portion of the body.

Abstract: Disclosed is a vibration absorbing apparatus for a compressor of a refrigerator. The vibration absorbing apparatus includes: an elastic member for absorbing a vibration generated during an operation of a compressor; a base pan supporting the elastic member; a stand installed in the base pan to prevent the elastic member from being bent; and a stopper installed in an upper portion of the stand to prevent the elastic member from being escaped from the base pan during a vibration of the compressor. The elastic member includes: a body having a plurality of grooves enclosing an interior surface and an exterior surface thereof, and a hollow axially passing through a central portion of the body; and a base being a lower portion of the body and being mounted on the base pan.

Abstract: A main unit casing assembly for electronic products is provided, including a casing and a plurality of body panels. The body panels are directly assembled to the casing to cover the casing and form a containing space, thereby not having to use a top casing of a main unit of the electronic product in the prior art. The use of this casing assembly can reduce the thickness of the casing assembly while still maintaining structural strength of the casing assembly, making the electronic product with such a casing assembly more compact in size.

Abstract: A shock mount assembly is provided, which generally includes a spacer and a thimble. The spacer includes a spacer flange and a spacer tube projecting from the spacer flange. The spacer tube includes an inwardly projecting shoulder having an inner diameter. The thimble includes a metal thimble base having a flange and an internally threaded post projecting from the flange. The threaded post has at least one hole passing through a wall thereof. The thimble also includes a plastic hollow thimble stem. The stem includes at least one hole passing through a wall of the lower portion thereof, the hole having a leg extending inwardly from one of the walls thereof. The leg includes a radially inwardly extending tab sized, shaped and positioned to engage the hole passing through the wall of the threaded post in a snap fitted arrangement when the threaded post is inserted into the stem. The stem also includes projecting from a top end thereof a plurality of fingers spaced about a periphery thereof.

Abstract: A method and apparatus for damping vibration in a paper machine. The apparatus having a dynamic damper which includes a weight suspended by a spring. The spring constant of the spring is changed by means of a control device in order to tune the natural frequency of the dynamic damper. The dynamic damper is tuned to a frequency that is substantially equal to a multiple of the rotational frequency of the roll in the paper machine that is being damped.

Abstract: A vibration isolation assembly comprises a base, a plunger and an annulus of resilient material between the base and plunger. The base has a pair of oppositely inclined, internal, tapered surfaces connected to each other which define an opening though the base. The tapered surfaces of the base contact corresponding external surfaces of the annulus. The plunger has an inclined surface substantially parallel to one of the internal surfaces and a second surface within the opening and facing the pair of tapered surfaces. The inclined surface and the second surface of the plunger engage corresponding internal surfaces of the annulus. In this device vibration creates a load on the annulus which is entirely compressive, or nearly so.

Abstract: A vibration isolation table includes a stationary housing having an opening on top thereof; a pressure-tight flexible member which closes the opening to form a first pressure chamber in the stationary housing; a primary movable base which is coupled to a central portion of the pressure-tight flexible member, the primary movable base having a bottomed hollow cylindrical member; an intermediate movable base having a swingable rod which is inserted into the bottomed hollow cylindrical member so that a bottom end of the swingable rod is supported thereby to allow the swingable rod to swing with respect to the bottomed hollow cylindrical member; and a vibration-free base on which an object to be isolated from vibration is mounted, a second pressure chamber being formed between the intermediate movable base and the vibration-free base, the second pressure chamber being capable of expanding and contracting vertically.

Abstract: Disclosed herein is a drying machine. The drying machine comprises supporting members mounted on a base, and motor fixing brackets each including an insert part, through which a motor is inserted, and first and second supporting legs extending downwardly from the opposite ends of the insert part, the first and second supporting legs being engaged with the supporting members, whereby any vibration of the motor is prevented and attachment/detachment of the motor is easy and convenient.