Abstract: A vibration isolator having a stopper function being able to prevent accumulation of water penetrating onto the top surface of a flange, and allowing the dies axially to be parted, includes a cylindrical body fitting connected to an upper side attachment fitting having a flange for the stopper via a vibration isolating substrate. A cylindrical stopper fitting extending outside the vibration isolating substrate up to above the flange is fixed to the body fitting, being folded inside so that the upper extremity portion of the stopper fitting lies above the flange. A stopper rubber is provided on the top surface and outer circumferential portion of the flange. The flange abuts the stopper fitting through the stopper rubber when the upper side attachment fitting moves substantially. A notch groove for drainage continuous from the top surface to the outer circumferential portion is provided at at least one place circumferentially on the stopper rubber.

Abstract: A cylindrical mounting apparatus includes: a cylindrical mount having an elastic body elastically connecting an inner and outer sleeve disposed in mutually spaced-apart relation; and a bracket independent of the cylindrical mount and having a pair of support plates opposed to each other with a spacing therebetween. The mount is interposed between the pair of support plates and fastened to the bracket by a mounting bolt extending through a bore of the inner sleeve across the support plates. Two positioning protrusions protrude from an inside surface of one support plate toward the other, and a mounting plate is disposed on one axial end of the inner sleeve extending diametrically. A recessed engaging portion of the mounting plate is brought into engagement with the positioning projections to place the mounting plate in a predetermined position about its center axis on the support plate.

Abstract: A fluid-filled elastic mount of suspension type, wherein a lower open-end of a cylindrical portion of a second mounting member is fluid-tightly closed by a first mounting member and a tapered elastic body interposed therebetween, extending from the lower open-end into the cylindrical portion. An upper open-end portion of the cylindrical portion is closed by a flexible layer for forming a fluid-filled chamber between the elastic body and the flexible layer and being divided by a partition member into a pressure-receiving chamber defined by the elastic body and an equilibrium chamber defined by the flexible layer, which are held in communication by an orifice passage An elastic restricting projection is bonded to the partition member to protrude and be located in an intermediate portion between the radially opposite elastic body and the cylindrical portion, for restricting an annular region of the intermediate portion.

Abstract: An improved and tight package vibration isolator assembly increases the strength of the mount structure without compromising the efficiency of the damping features. An exo-skeleton bracket design provides a rigid structural strength able to withstand extreme loads. The bracket also allows forces to bypass the fluid components of the damping assembly that are otherwise subject to potential passage of forces therethrough. The exo-skeleton bracket provides a stiff structure that substantially surrounds the damping assembly. Tuning of the assembly is also simplified through use of a travel limiter assembly, the cross-section of which may change in shape, or characteristics of a surrounding resilient sleeve selectively altered, to tune the damping characteristics of the damping assembly.

Abstract: A fluid-filled vibration-damping mount of suspension type, wherein a lower open-end of a second mounting member is fluid-tightly closed by a first mounting member and a tapered elastic body interposed therebetween. An upper open-end portion of the cylindrical portion is closed by a flexible layer for forming a fluid chamber between the elastic body and the flexible layer, which is divided by a partition member into a pressure-receiving chamber defined by the elastic body and an equilibrium chamber defined by the flexible layer, which are mutually communicated through an orifice passage. A pair of elastic restricting projections bonded to the partition member at respective circumferential positions with a circumferential length smaller than a half of a circumference of the partition member, project toward a circumferential region defined between the elastic body and the second mount member, for narrowing the region.

Abstract: A vibration damping actuator including: a guide hole open onto a bottom face of a housing; a lid metal plate fitted into the opening of the guide hole with a size enough to hinder inward displacement thereof into the guide hole by an annular shoulder portion; an engaging groove disposed on an inner circumferential surface of the opening; a snap ring of C-letter shape fitted into the engaging groove to prevent the lid metal plate from becoming dislodged from the opening; and a sealing rubber layer formed covering an inside face of the lid metal plate. The lid metal plate is pressed by the snap so that the sealing rubber layer is pushed against the annular shoulder portion, thereby sealing the opening of the guide hole.

Abstract: A fluid filled vibration damping device including: an elastic body elastically connecting a first and a second mounting member and partially defining a pressure receiving chamber filled with a non-compressible fluid; a flexible diaphragm partially defining an equilibrium chamber filled with the non-compressible fluid and connected to the pressure-receiving chamber via an orifice passage. The first mounting member includes an elastic-body-side central member bonded to the elastic body central portion, and a rubber-layer-side central member bonded to the flexible rubber layer central portion, both mutually superposed on and fastened together by a connecting bolt. A fitting recess and projection are formed at an interface between two members, and a mounting projection projecting outward on an opposite side from the interface. The connecting bolt is off-centered from a center of the two members by a give distance.

Abstract: A vibration isolator includes a first metallic mounting member; a metallic body member disposed away from the first metallic mounting member in the vibration input direction; an elastic body portion elastically connecting the first metallic mounting member and the metallic body member; and a second metallic mounting member. The metallic body member includes a flange portion protruding radially outward from a part of its end facing the first metallic mounting member and a first protrusion protruding radially outward from the remaining part of the end to a greater extent than does the flange portion. The opposite end of the metallic body member is plugged with a seal member to thereby form a liquid chamber within the metallic body member. The second metallic mounting member is fixedly press-fitted onto the metallic body member and includes a second protrusion. The first and second protrusions are superposed to thereby form a stopper portion. The stopper portion is covered and held by a stopper covering portion.

Abstract: A hydraulic vibration-damping support comprising two strength members interconnected by an elastomer body which defines a working chamber filled with liquid and separated from an easily-deformable compensation chamber by a rigid partition. The partition includes a decoupling flap which comprises a flexible membrane mounted to move with clearance between two intermediate gratings mounted on two rings via two elastomer bands.

Abstract: The invention relates to an elastomer spring (1), particularly for rail vehicles, comprising at least:

Abstract: The invention concerns a motor vehicle equipment module (30) of the type comprising at least first and second components (32, 34) whereof first and second fixing zones (50, 52) are designed to be fixed to a structural element (12) of the vehicle with a common fixing element, such as a screw. The invention is characterised in that it comprises linking means (60) which link together the two components (32, 34) when the module is delivered (30) to be mounted on the vehicle structural element, and an elastic element (62) is axially interposed between the linking means (60) and the second component (34), and the linking means (60) are interposed between the common fixing element (54) and the structural element (12), when the module (30) is fixed.

Abstract: A powertrain mount comprises an orifice plate and a rotatable track member. The orifice plate has an opening, a first surface sloping toward the opening, and an inner surface. The rotatable track member has an outer surface proximate the first surface of the orifice plate, and the outer surface of the rotatable track member has an opening. A compliant member is positioned adjacent the orifice track for isolating and damping amplitudes of vibration frequencies, as an amplitude dependent device. For small amplitudes, the compliant member takes up displaced fluid within the mount; whereas, large amplitudes the compliant member is bottomed out, forcing displaced fluid through the orifice track or into the molded assembly of the mount.

Abstract: A fluid-filled vibration-damping device includes an elastic body elastically connecting a first and a second mounting member so as to close one open-end portion of the second mounting member, and a partition member assembled with the second mounting member on one side thereof to form therebetween a pressure-receiving chamber partially defined by the elastic body and assembled with a fixing member on the other side thereof to form an equilibrium chamber partially defined by a flexible layer supported by one pen-end portion of the fixing member. The partition member includes a first and second fixing grooves axially spaced apart from each other with an intermediate portion therebetween, to which the other open-end portions of the second mounting and fixing members are respectively press-fitted, and an air passage for connecting a working air chamber to an external air conduit is open in the intermediate portion.

Abstract: A fluid-filled vibration damping device including: a rubber elastic body elastically connecting a first and second mounting member and partially defining a pressure-receiving chamber filled with a non-compressible fluid; a flexible layer partially defining an equilibrium chamber filled with the non-compressible fluid; an orifice passage permitting a fluid communication between the pressure-receiving chamber and equilibrium chamber; and a cushion surface situated opposite to an opening of the orifice passage to the pressure-receiving chamber in a first direction of flow of the fluid into and out of the opening, with a predetermined distance therebetween, while extending in a second direction approximately perpendicular to the first direction.

Abstract: Vibration of a member supported by another member is damped by detecting the changes in the width of a gap between the members and applying an electrical force between the members in a time-dependent manner. The detection of the changes in the width of the gap may be carried out by an optical displacement sensor or by a capacitive displacement sensor. The electrical force is applied by attaching electrodes on mutually opposite surfaces of the members and connecting them to a voltage source such that their voltages can be varied or to a current source such that mutually parallel and/or antiparallel currents can flow through them. Vibration damping devices structured for using such a vibration damping method can provide shock-absorbing mounts to apparatus of different kinds such as lithography exposure apparatus having an optical frame supported by a base frame, a workpiece being placed on the base frame and the optical frame supporting an optical system for irradiating the workpiece with radiative energy.

Abstract: A mount assembly for connecting a damper rod to a body includes a tower including an annular opening and a proximal attachment portion. The tower is connected to the body at the proximal attachment portion. The mount assembly further includes a mount housing having a vertical portion extending through the annular opening and a flange disposed on one side of the tower. A nut is disposed on a side of the tower opposite the one side and engaged with the vertical portion of the mount housing. The mount assembly further includes a resilient cushion assembly disposed within the vertical portion of the mount housing so that the damper rod extends through the resilient cushion assembly, and a spring engaged with the tower and adapted to transfer loads to the tower.

Abstract: A hydraulic mount provides passive rate dip performance through use of a secondary orifice track-mass resiliently constrained within a first orifice track for reciprocating movement within the first orifice track under conditions such as engine idle, and constrained against reciprocating motion within the first orifice track for conditions imposing large amplitude, low frequency loads on the mount.

Abstract: An orifice device is adapted to be disposed within a fluid chambers of a vibration absorption device. The fluid chamber is defined by at least a wall portion made of resilient material. The orifice device includes an orifice casing, a retaining cover and a membrane that is made of resilient material, such as rubber. The membrane is adapted to be clamped between the orifice casing and the retaining cover. A lock mechanism serves to lock the orifice casing and the retaining cover together when the orifice casing and the retaining cover rotate relative to each other about an axis while the orifice casing and the retaining cover are overlapped with each other.

Abstract: An antivibration sleeve comprising an inner strength member which extends longitudinally along a central axis, a rigid annular strength member surrounding the inner strength member, and an elastomer body which interconnects the two strength members. The strength members have respective wedge-shaped bearing zones placed in register with each other to compress the elastomer body when the antivibration sleeve is supporting a static axial load. The bearing zones of the annular strength member enabling passages to be formed between two hydraulic chambers defined by the elastomer body.

Abstract: Vibration-isolating device including a vibration-isolating substrate formed of a rubber elastomer, first and second fittings each connected to a respective sides of the substrate, a first stopper portion arranged in connection with the first metal fitting, an outwardly projecting flange arranged in connection with the second metal fitting and a stopper metal fitting. The stopper metal fitting includes a caulking and fastening portion which is caulked and fastened with at least a part of the flange, and a second stopper portion arranged proximate and abutting against the first stopper portion. Outer circumferential surfaces of the base body and the second metal fitting are substantially oval and outer edges of the caulking and fastening portion and the flange trace along an imaginary circle around a central axis, at least at areas caulked and fastened.

Abstract: A liquid-sealed mount capable of obtaining excellent damping performance is provided. For this purpose, the mount includes an elastic body (16), a stud (13) penetrating through the elastic body, a case (51), which is in a cylindrical shape with one end side being opened and with a bottom face on the other end side, and houses a viscous liquid (L) inside, and in which the viscous liquid is scaled by fitting the elastic body and the stud into the opening at the one end side, a damping member (14) attached to the stud in a state in which the damping member submerges in the viscous liquid; and a wall surface of a portion of the case, which submerges in the viscous liquid, is formed so that an inner diameter gradually decreases toward a lower position and an angle of inclination is different in an upper part from a lower part; and an outer circumferential side surface of the damping member opposes the inclined surface of the case.

Abstract: A mount for a powertrain component of a motor vehicle comprises first and second mounting members, an elastomeric body connected to the first mounting member and connected to the second mounting member, and a plate. The plate defines first and second chambers, and has an orifice for the passage of fluid therethrough. A plunger having at least one hole is connected to the first mounting member, and a compliance member is disposed proximate the at least one hole.

Abstract: A vehicular power unit mount structure having a first mounting member for attachment to a power unit and a second mounting member elastically connected to the first mounting member for attachment to a vehicle body includes an elastic waterproofing cover having an axial displacement stopper engageable with an end of a tubular portion of the second mounting member to elastically absorb impact shock and eventually stop movement of a shaft portion of the first mounting member when the shaft portion is displaced in an axial direction toward the second mounting member, and a radial displacement stopper engageable with an inner cylindrical surface of the tubular portion to elastically absorb impact shock and eventually stop movement of the shaft portion when the shaft portion is displaced in a radial direction relative to the second mounting member.

Abstract: A hydraulic antivibration mounting comprises: an inner strength member; a cage comprising a tubular wall and a flange extending radially outwards from the tubular wall; a cylindrical outer strength member in which the cage is received and having a shoulder and a collar, the shoulder defining a channel filled with damping liquid and the collar being crimped directly to the flange; and an elastomer body connected to the inner strength member and to the cage and forming a sealing gasket for the channel between the collar and the flange.

Abstract: The present invention pertains to a hydraulically damping rubber mount with variable channel length. The basic object of the present invention is to design such a mount such that its channel length can be adapted to the later intended use with a simple design during the manufacture without changing the design. The hydraulic mount being proposed comprises to this end an elastomeric damping member, at least two chambers to accommodate a fluid damping agent and a channel carrier with a channel connecting the chambers in a flow-conducting manner. The channel has passage openings to the chambers. An incompletely closed ring, one end of which forms a channel deflection, is displaceably guided in the channel in the manner according to the present invention. The channel is divided as a result into two channel parts, which unite between the ends of the ring and through which the damping agent flows in opposite directions.

Abstract: A double orifice type liquid-in vibration isolating device including a partition portion fitted between a vibration isolating substrate combined through a body fitting and a first diaphragm made up of a partition main member forming a first orifice, a partition plate member forming a second sub-liquid chamber and a second orifice, and a partition support plate forming the first orifice. An inlet/outlet on the main liquid chamber side of both orifices is common to both orifices. The first orifice is diverged from a part of the second orifice having a liquid passing resistance smaller than that of the first orifice to provide two orifices compactly. Any variation or change of the property can easily be coped with by circumferential position adjustment of the component members of the partition portion.

Abstract: A vibration-isolating device for mounting and/or supporting an apparatus in vibrational insulation from adjacent structures, and a method for fabricating the vibration-isolating device. The vibration-isolating device includes a housing with a side wall portion joined to an end cap. A cushion is disposed on an inner surface of the side wall portion. The cushion is at least partially spaced from the end cap to form an interior compartment. A displaceable member is affixed to the cushion, extending away from the end cap. The displaceable member moves relative to the housing to dampen vibrations or sudden forces exerted on either the member or the housing.

Abstract: In a support structure by a pendulum mount system supporting a drive unit with two mounts (RH)(LH) disposed upwardly and laterally thereof and a lower part thereof with a torque supporting part (Rr), the invention is made to improve the riding comfort performance by suppressing vertical vibrations of the floor at 12 to 17 Hz. To that end, given vertical dynamic spring constants of the one mount (RH) and the other mount (LH) to be K1 and K2 and horizontally transverse distances from a gravity center (G) of the unit to centers of both mounts to be L1 and L2 respectively, the dynamic spring constant K2 of the other mount is set to satisfy equation (a) below, where the coefficient C is 1.3 or more, preferably a variable less than 1.9. The peak frequency of loss factor (Lf) vertically of the one mount (Rh) is set at about 15 Hz.

Abstract: The invention relates to an anti-vibration mount comprising two rigid frames (2, 3), a rigid insert (4), which is fixed to the first frame (2), and an elastomer body (6) which at least partially overmoulds the insert (4) and which connects said insert to the second frame (3). The insert (4) is positioned in two lateral guides (14) which extend perpendicularly to the main direction of vibration (Z). Said insert (4) and said lateral guides (14) are shaped in such a way that the insert (4) is wedged in the lateral guides (14), without any clearance in the main direction of vibration. A deformed end area prevents the insert (4) from coming out of the guides.

Abstract: The invention provides a liquid-sealed vibration-proof device, whose partition is constituted of and shaped separately by an orifice member having an orifice channel, a partition plate member forcing its outer periphery toward an outer peripheral end of a vibration-proof base on the liquid chamber side, and a second diaphragm closing a central opening of the orifice member. A recessed groove of a marginal portion of the second diaphragm is press-fitted in and engaged with a hook portion projecting inwardly of the orifice member, and a bottom wall of the recessed groove is pinched and pressed by the hook portion and the partition plate member, whereby the assembling is facilitated, ensuring a reliability and functionality of a product.

Abstract: Prosthetic apparatus includes a pyramid adaptor and a pylon connected together by an outer sleeve, which may be an elastomeric element. The sleeve or element is clamped to both the pyramid adaptor and to the pylon to provide shock absorbing characteristics and to allow relative axial rotation between the pyramid adaptor and the pylon. Different configurations or embodiments of sleeves are illustrated, and the use of a third clamp is also illustrated.

Abstract: A pneumatically controlled vibration damper that includes: an elastic connector disposed between and secured to a mounting member and a mass member for elastically connecting the mass member to the mounting member, and partially defining a working air chamber closed from an external area; an air passage connected to the working air chamber for regulating an air pressure in the working air chamber from the external area; and a static pressure-regulating system operable for substantially statically regulating the air pressure in the working air chamber via the air passage, so as to induce a substantially static elastic deformation of the elastic connector for changing a spring characteristic of the elastic connector.

Abstract: A hydraulic vibration-damping support comprising two strength members interconnected by an elastomer body which defines a working chamber communicating with a compensation chamber via a constricted passage. The two hydraulic chambers are separated from each other by a rigid partition formed by two gratings disposed one on the other, and a decoupling flap is mounted with a small amount of clearance between the gratings. The decoupling flap is provided with two catches that are clipped onto one of the gratings.

Abstract: A fluid-filled vibration-damping device including an elastic body elastically connecting a first and a second mounting member to fluid-tightly close one open-end of the second mounting member, and mutually assembled a movable rubber plate bonded to a first support member and a flexible rubber layer bonded to a second support member are fluid-tightly fixed to the other open-end of the second mounting member by caulking such that the movable rubber plate cooperate with the elastic body to form a primary fluid chamber and the movable rubber plate and the flexible rubber layer cooperate to form an auxiliary fluid chamber, which are filled with a non-compressible fluid and connected together through an orifice passage.

Abstract: A damper is provided having an assist grip into which the damper is built. The damper includes a housing having an inner cylinder and an outer cylinder which disposed concentrically with each other and an annular space formed between the inner cylinder and the outer cylinder containing a viscous fluid; a cylindrical rotor accommodated in the housing and which receives a damping action from the viscous fluid; a ring-shaped sealing member for preventing viscous fluid leakage; and an annular cap provided independently of the rotor and mounted to the housing, and which retains the rotor and the sealing member in the housing. Another damper is provided that includes a housing which has an annular space containing a viscous fluid, the cylindrical rotor the annular cap, a ring-shaped first sealing member disposed between the rotor and the cap, and another ring-shaped second sealing member disposed between the rotor and the housing.

Abstract: A hydramount, including a supporting bearing and a bearing member, which are supported on each other by a substantially frustoconical, first elastic spring element made of elastomeric material. The hydramount includes a working chamber and a compensating chamber, which are each filled with hydraulic fluid, are separated from each other by a partition, and are in fluid communication via a first damping opening. The supporting bearing is in the form of an internal, first supporting body, which is encircled by an external, second supporting body, at a radial distance. The first and the second supporting bodies are connected by the first elastic spring element and a second elastic spring element. The first elastic spring element and the second elastic spring element define at least two chambers filled with hydraulic fluid.

Abstract: A hydraulic hearing, including a supporting bearing (1) and a bearing member (2), which are supported against each other by an elastic spring element (3) made of rubber elastic material, and delimit a working chamber (4) and the compensating chamber (5); the working chamber (4) and a compensating chamber (5) each being filled with damping fluid (6) and being in fluid communication with each other; the bearing member (2) essentially being formed in the shape of a pot; the supporting bearing (1) and the elastic spring element (3) essentially being disposed in the interior space (7) defined by the pot-shaped bearing member (2); the bearing member (2) having a two-shell design on its peripheral side, and an outer ring (8) which encloses an inner ring (9) with a radial clearance; the compensating chamber (5) being disposed in the gap formed by the clearance, and being delimited by a boundary wall (11), which extends in the axial direction, can expand in a radial direction, and essentially accommodates an increase

Abstract: Disclosed is a pneumatically operated fluid-filled active vibration-damping device including: a primary fluid chamber partially defined by an elastic body and filled with a non-compressible fluid; a movable member being elastically displaceable and partially defining the primary fluid chamber its one side; a working air chamber disposed on the other side of the movable member; and an air reservoir directly extending from the working air chamber and fluid-tightly closed at its protruding end portion. A fluid pressure variation in the primary fluid chamber is induced by an elastic deformation of the elastic body while being actively controlled by transmitting an air pressure variation applied to the working air chamber from an external area to the primary fluid chamber via the movable member. A vibration-damping apparatus using the vibration-damping device is also disclosed.

Abstract: Hydraulic damper bearing for the attenuation of movement. In one embodiment the hydraulic damper bearing has a first anchoring unit and a second anchoring unit, the second anchoring unit moveable in relation to the first anchoring unit. The hydraulic damper bearing also has a spring component working between the first and the second anchoring units, an operating chamber filled with damping fluid and an equalizing chamber separate from the operating chamber and in fluid communication with the operating chamber via a damping duct which is bordered by a duct wall. The volume of the operating chamber is changed during the relative motion of the first and second anchoring support units. During this relative movement, the damping fluid is moved in the damping duct between the equalizing chamber and the operating chamber. A displacing element is arranged on the first anchoring unit and extends into the operating chamber.

Abstract: Disclosed is a fluid-filled vibration-damping device and a method of manufacturing the same, wherein an elastic body connecting a first and second mounting members partially defines a fluid-filled zone filled with non-compressible fluid, and a sealing part of the fluid-filled zone is formed by forcedly fitting an annular fixing projection formed on one of an inner circumferential surface of a first sealing member or an outer circumferential surface of a second mounting member into an annular fixing recess formed onto the other. Drain passages are formed at an interface between the annular fixing recess and projection to expose a floor of the annular fixing recess to an outside. Compressed air is blown into one of the drain passages so as to blow away or forcedly discharge the non-compressible fluid remained on the floor of the annular fixing recess to the outside through another drain passage.

Abstract: In a hydraulic antivibration device for use in supporting a vibratory body like an automobile engine, the invention enables it to enhance the dimensional precision of an orifice for shake vibration, to decrease the dispersion in characteristics, and to reduce the dynamic spring rate in a high frequency region thereby reducing noise such as muffled sound.

Abstract: A cooling module mounting system and method of mounting the package to a vehicle is described. A chassis cross member for providing vertical support to the cooling package is sub-assembled to the cooling module separate from the vehicle where the two mounting surfaces can be held parallel to one another eliminating the possibility of unevenly preloading the isolator. Then this pre-assembled isolated system can be mounted on the truck chassis without changing the relationship of the compressed isolator when the module is bolted down during truck assembly. This system eliminates the fore aft adjustment variability allowing for more control over the static location and isolator compression of the cooling module in the truck. The stay rods used eliminate variation in the rod isolator compression during mounting. The stay rod also allows for controlled multi-axial movement with a mounting centerline perpendicular to the input loads.

Abstract: A controllable hydraulic bearing, especially for motor vehicles, with a working chamber and an equalizing chamber arranged annularly around the working chamber. The chambers are filled with an electrorheological fluid and are connected to one another via an annular gap-like overflow channel. The overflow channel has two mutually opposite electrodes for generating a high-voltage field in the overflow channel. The overflow channel (8) extends helically in its longitudinal extension around the said working chamber (1) between the working chamber (1) and the equalizing chamber. The wall of the overflow chamber (8) comprises an electrically insulating carrier layer provided on both sides with conductive cover layers forming electrodes.

Abstract: A hydraulically damping elastomeric bearing is suitable for mountings in a motor vehicle. The elastomeric bearing includes an elastic bearing part which is arranged between a sleeve-shaped outer part and an inner part coaxial thereto and which connects these elastically to one another. At least two chambers, which are filled with a liquid damping medium, communicate with one another via at least one throttle duct. Four chambers are provided, which are arranged in one plane, the four chambers each being arranged in one of four quadrants which are formed by two intersecting axes arranged in the plane, and at least two throttle ducts being provided.

Abstract: A fluid-filled vibration-damping device includes an elastic body elastically connects a first mounting member and a cylindrical second mounting member bonded to opposite side thereof; a diaphragm supported by the second mounting member so that the diaphragm cooperates with the elastic body to define therebetween a fluid chamber; and a partition member supported by the second mounting member so that the partition member divides the fluid chamber into a primary fluid chamber and an auxiliary fluid chamber which are held in communication through an orifice passage defined by an orifice-defining member having a movable rubber plate disposed in its central hole. The surface of the orifice-defining member is coated at a primary-fluid-chamber-defining area by a coating rubber layer, thereby minimizing noises caused by bubbles in the fluid chamber.

Abstract: A mount comprising a unitary resilient member where the unitary resilient member comprises a spring portion, an intermediate stiffening portion and a damping layer, and the resilient member is compressible and extendible. The resilient member is substantially enclosed by a casing. The mount further includes damping means located in contact with said damping layer, the damping means providing damping in response to compression and extension of said resilient member.

Abstract: A hydraulic vibration-damping support comprising two strength members interconnected by an elastomer body defining in part a working chamber filled with liquid, the working chamber communicating via a constricted passage with a compensation chamber separated from the working chamber by a rigid partition. The rigid partition is provided with two gratings between which a decoupling valve member is mounted with clearance, which decoupling valve member is provided with studs disposed so that the decoupling valve member has a midplane disposed on a slant relative to the gratings.

Abstract: A liquid-in vibration isolator has an orifice hole mainly for audible sound provided on a first sub-liquid chamber and connected to a second sub-liquid chamber. When the first sub-liquid chamber is reduced to lower pressure and contracted due to large downward displacement caused by vibration and the diaphragm of the vibration isolator approaches the partition portion of the vibration isolator, the center plate portion of the orifice member is a convex with the center portion projected to the first sub-liquid chamber side, and the orifice hole is provided at a low portion of the center plate portion disposed eccentrically with respect to the isolator axis. Therefore, even being in contact with the center plate portion, the diaphragm hardly comes into contact with the orifice hole, or if it comes into contact with the orifice hole, it does not cover the orifice hole so as to interfere with proper function of the orifice hole.

Abstract: Disclosed is a hydraulic engine mounting capable of supporting an engine mounted on a vehicle body so as to prevent mechanical interference of the engine with the vehicle body, and prevent transmission of engine vibrations and noises to the vehicle body. The hydraulic mounting comprises an upper plate coupled to one vibration source; a lower plate coupled to a supporting portion supporting the other vibration source; a body fixed to an upper portion of the lower plate, and having an air chamber therein which is communicated with an exterior through a plurality of orifices; a variable diaphragm covering an opened upper surface of the body; an elastic member fixed to a lower portion of the upper plate, and defining a liquid chamber together with the variable diaphragm; and a partition for dividing the liquid chamber into an upper liquid chamber and a lower liquid chamber which communicate with each other.

Abstract: A pneumatically regulated classic bearing dampens hydraulically and decouples vibrations of a small amplitude using a freely displaceable element. The bearing can be engaged using a pneumatically activated control chamber, which has a miniature configuration and is located beneath the freely displaceable element, in such a way that the element forms a deformable or displaceable element for the control chamber. In place of a compensation regulation, in the control chamber, a shift to one of three possible, pneumatically determined control states preferably takes place. The states are VENTILATED, CLOSED and PRESSURIZED.