Abstract: A multiple chamber piston includes a first fluid chamber and a second fluid chamber attached by a first channel and a third fluid chamber connected to a fourth fluid chamber by a second channel. Air chambers are provided between the first fluid chamber and the third fluid chamber as well as the second fluid chamber and the fourth fluid chamber. As a result, when vibration is to be attenuated, walls of the air chambers are able to bend and deform to increase compliance of the overall multiple chamber piston.

Abstract: A rubber bearing with graduated damping characteristic has essentially a preferably cylindrical or approximately cylindrical inner part, a tubular outer sleeve arranged coaxially around the inner part as well as a pressure body with chambers for a damping agent. The pressure body is arranged in a fixed manner between the inner part and the outer sleeve. A rubber bearing which has a simple design and effectively damps forces introduced in different ranges of the characteristic due to its graduated damping characteristic is provided. The pressure body of the bearing is divided in the radial direction into a plurality of damping areas whose damping characteristics can be adjusted independently from one another by an intermediate sleeve arranged coaxially to the inner part and the outer sleeve.

Abstract: A fluid-filled cylindrical vibration-damping device wherein an inner and an outer sleeve are elastically connected together at their axially upper ends by an elastic body, at their axially lower ends by a flexible layer, and at their axially intermediate portions by a flexible partition. A pressure-receiving chamber partially defined by the elastic body and an equilibrium chamber partially defined by the flexible layer are disposed on opposite sides of the flexible partition, and are held in fluid communication through an orifice passage defined by an orifice defining member attached to an axially intermediate portion of an inner circumferential surface of the outer sleeve. The flexible partition includes a cylindrical portion extending axially upwardly from an inner peripheral portion of the orifice defining member and an annular curved portion extending radially inwardly from the upper end of the cylindrical portion to be fixed to the inner sleeve.

Abstract: Disclosed is a fluid-filled cylindrical vibration damping device including an elastic body interposed between an inner and outer sleeves for elastically connecting these sleeves with each other. A plurality of fluid chambers filled with a non-compressible fluid are partially defined by the elastic body so that a pressure of the fluid in the plurality of fluid chambers vary upon application of a vibrational load to the vibration damping device. A first orifice passage permitting a fluid communication between the fluid chambers is at least partially defined by an elastic member adapted to be subjected to shear deformation due to a fluid pressure acting on the first orifice passage so that a cross sectional area of the first orifice passage increases according to an increase of the pressure of the fluid acting on the first orifice passage owing to the shear deformation of the elastic member.

Abstract: The vibration isolating apparatus includes, an outer tube, an inner tube disposed at an inner peripheral side of the outer tube, an elastic body disposed between the outer tube and the inner tube, a main fluid chamber which contains a fluid with the elastic body serving as a portion of a partitioning wall of the main fluid chamber and whose internal volume changes due to deformation of the elastic body, a first auxiliary fluid chamber which contains a fluid and a portion of a partitioning wall of the first auxiliary fluid chamber is formed by a diaphragm so as to expand and contract a space between the first auxiliary fluid chamber and the outer tube, a first passage which communicates the main fluid chamber and the first auxiliary fluid chamber, and a second passage which communicates the main fluid chamber and the first auxiliary fluid chamber.

Abstract: A mount for a powertrain component of a motor vehicle comprises a primary chamber and a secondary chamber. An orifice track is in fluid communication between the primary chamber and the secondary chamber, and a compliant element is disposed in the primary chamber.

Abstract: Disclosed is a cylindrical elastic mount including an inner sleeve member having an outward flange portion at one and an outer sleeve member disposed around the inner sleeve member with a radial spacing therebetween. The outer sleeve member has an outward flange portion at one end on the side of the flange portion of the inner sleeve member so that the flange portions of the inner and outer sleeve members are opposed to each other with an axial spacing between respective opposite surfaces of the flange portions. An elastic body disposed in the radial spacing between the inner and outer sleeves and the axial spacing between the flange portions for elastically connecting the inner and outer sleeve member.

Abstract: Vibration-isolating device having a low dynamic spring constant, particularly in a high frequency spectrum of about 150 Hz to 300 Hz, and including an annular liquid chamber defined in a rubber elastomer between an internal cylinder member and an external cylinder member. An annular stirring member is arranged in the chamber projecting from an inner periphery side of the external cylinder member inward toward a chamber wall face on the internal cylinder member side form a clearance therebetween. Upon inputting of vibrations, the dynamic spring constant is lowered by the resonance action due to the fluidization of liquid flowing vertically through the clearance within the chamber.

Abstract: A liquid-sealed vibration-proof device capable of avoiding leakage of liquid upon press fitting of an outer cylinder is provided. An intermediate ring interposed between the outer cylinder and an antivibratory base is formed at its outer circumferential surface with two projecting streaks, the one on liquid chambers side being formed with cutouts. When the outer cylinder is press fitted to an attachment opening of a vehicle body, the liquid confined in a space enclosed between both projecting streaks can escape to the liquid chambers, so that liquid never leaks outside.

Abstract: A toe correction bushing (1) is composed of a main body (2) and a stopper member (3), wherein the main body (2) is integrally provided with an inner cylinder (4), an outer cylinder (5), and an elastic body (6). The outer cylinder (5) is provided at part of the axial end with an outwardly opening inclined section (7). A recessed space (8) is provided inside of the inclined section (7). The stopper member (3) is provided with a circular plate section (20) and a stopper projection (23) at the peripheral section thereof. A boss (21) provided at the central section of the stopper member (3) is press-fitted into one end of the inner cylinder (4) for integration and at the same time, the stopper projection (23) is caused to engage the recessed space (8). When a lateral force F to the right is applied to the outer cylinder (5), the axial movement of the outer cylinder (5) is controlled by the stopper projection (23) and displaced in the direction perpendicular to the axis by an inclined plane (24) for toe correction.

Abstract: An aggregate bearing (1) in bushing form having an outer ring (2) and an elastomeric coating (3) and an inner support part (4), as well as rubber springs (5, 6) arranged in-between; axial penetrations (8, 9) are provided between the outer ring (2) and stop buffer (7) located in the direction of the main load (10); and, prior to the bearing being put into use for the first time, the stop buffer(7) located in the main load direction (10) and the inner elastomeric coating (3) of the outer ring (2) are connected to one another by at least one cross-piece (12) arranged in the axial direction of the bearing (1) and designed as a preset rupture joint, in order to achieve as early a progression onset as possible in the direction of the pull.

Abstract: A rubber bearing with axial damping includes a multipart bearing inner part (1), an elastomer (9, 9′), which surrounds the bearing inner part (1) in some sections and is connected thereto by vulcanization, chambers (5, 5′) for accommodating a damping agent, a channel carrier (11) with at least one damping agent channel (12), which makes possible the circulation of the damping agent between the chambers (5, 6, 7), as well as an essentially cylindrical bearing sleeve (10), which accommodates the above-mentioned bearing parts. The bearing inner part (1) has a section (2, 3) of increased diameter compared with a middle area (4) of the bearing inner part (1) at the respective axial ends of the bearing. A channel carrier (11) with chambers 5, 5′ for the damping agent is arranged between the sections (2, 3) of increased diameter of the bearing inner part (1).

Abstract: Disclosed is a cylindrical mounting apparatus including: 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 said 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 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 hydraulic damping bush, more particularly in automotive applications, damps loads in a main loading direction. The bush includes an inner sleeve, an outer sleeve, a resilient mounting assembly disposed between the inner sleeve and the outer sleeve, as well as at least one end cap connecting the inner sleeve to the outer sleeve. The at least one end cap caps the space enclosed by the inner sleeve and outer sleeve from the environment. Two chambers are provided charged with a hydraulic damping fluid and interconnected via a transfer duct. The main loading direction is oriented parallel to a longitudinal axis of the inner sleeve and outer sleeve. The end caps can be formed separate from the resilient mounting assembly. Each of the chambers is defined by the resilient mounting assembly or a component adjoining the latter or by one of the end caps. This permits optimum material compatibility for facilitated production and assembly as well as a modular configuration of the bush.

Abstract: Disclosed is a vibration-damping device comprising: a first and a second mounting member disposed in mutually spaced apart relationship with each other and attachable to two members of a vibration system, respectively; and an elastic body disposed between and elastically connecting the first and second mounting members and including a connecting portion adapted to primarily connect the first and second mounting members. The connecting portion has a hollow housing portion in which an independent mass member is accommodated such that the independent mass member is independently displaceable relative to the housing portion without being bonded to the housing portion, and is brought into direct and elastic impact against the housing portion.

Abstract: A multiple chamber piston includes a first fluid chamber and a second fluid chamber attached by a first channel and a third fluid chamber connected to a fourth fluid chamber by a second channel. Air chambers are provided between the first fluid chamber and the third fluid chamber as well as the second fluid chamber and the fourth fluid chamber. As a result, when vibration is to be attenuated, walls of the air chambers are able to bend and deform to increase compliance of the overall multiple chamber piston.

Abstract: A suspension device has a carrying region, at which it is to be connected to a carrying structure, and also a flexible load beam which essentially consists of elastomer material, is disposed between two articulating zones and has a centrally disposed centre of load distribution. At the latter, the load acting on the said load beam branches out towards the two articulating zones, which in turn are each connected to the carrying region by a carrying leg. The two articulating zones lie in a common transversal plane which extends transversely to the direction of action of the load. The centre of distribution of load is disposed, in the non-loaded condition, between the carrying region and the transversal plane, and the load beam is adapted to approach a stretched position in which the centre of distribution of load lies in the said transversal plane when the load increases and is directed away from the carrying region.

Abstract: This invention provides a dynamic damper 10, in which convex portions 21 protruded in the direction of the inside diameter are provided at plural positions along the circumference of the outer pipe 20, and an elastic body 40 is held between the convex portion 21 and the outer circumference of the weight 30. A stopper portion 32 which is capable of engaging the convex portion 21 of the outer pipe 20 in the axial direction of the pipe is provided on the weight 30.

Abstract: A hydraulically damping bush bearing is presented, in which an inner rubber mount, which comprises an essentially cylindrical or nearly cylindrical inner part (1) with an axial through hole (2), an outer sleeve (3) surrounding the inner part (1) as well as an elastomeric damping member (4), which is arranged between the inner part (1) and the outer sleeve (3) and is connected to them by vulcanization, is surrounded at its axial ends by chambers (5, 5′) for receiving a fluid damping agent, wherein the chambers (5, 5′) are formed by a hydraulic area, which is arranged separately around the rubber mount and which comprises a rigid channel carrier (6) pushed over the outer sleeve (3) of the rubber mount with a channel (7) for the flow-conducting connection of the chambers (5, 5′), an outer bush (8) supported axially on the channel carrier, and means (9, 9′) arranged axially on both sides of the rubber mount for closing the bush bearing, wherein the means (9, 9′) consist in their radi

Abstract: A hydraulic antivibration mounting comprises:

Abstract: A fluid-filled cylindrical elastic mount having an inner sleeve and an outer sleeve, and an elastic body interposed therebetween. The elastic mount also has a intermediate sleeve having a plurality of windows through which a plurality of pockets formed at respective circumferential positions of the elastic body are open in the outer circumferential surface of the intermediate sleeve, respectively. The plurality of windows are fluid-tightly closed by the outer sleeve, thereby defining a plurality of fluid chambers filled with a non-compressible fluid. The elastic mount further includes an orifice member for defining an orifice passage for fluid communication between the plurality of fluid chambers.

Abstract: A hydraulic bushing forms a mount between a first component and a second component by including a first spring portion connected between a core and an inner support structure and a second spring portion surrounding the inner support structure. The first spring portion is formed of rubber and defines hydraulic fluid cavities and a fluid channel extending between the cavities, while the second spring portion is formed of microcellular polyurethane. The first spring portion and the second spring portion are located so they operate in series with one another. In this way, vibrations of a load transferred through the hydraulic bushing can be damped at a predetermined low frequency by the rubber with hydraulic fluid cavities, while still allowing for isolating of higher frequencies by the microcellular polyurethane.

Abstract: The invention is aimed at lowering the dynamic spring constant, particularly in a high frequency spectrum of about 150˜300 Hz as well, for a vibration-proof device wherein an annular liquid chamber is provided in a rubber elastomer between an internal cylinder member and an external cylinder member. To that end, within the chamber there is provided an annular stirring member projecting from an inner periphery side of the external cylinder member inboard toward a chamber wall face on the internal cylinder member side so as to hold a clearance therebetween, whereby upon inputting of vibrations, the dynamic spring constant is adapted to be lowered by the resonance action due to the fluidization of liquid flowing vertically through the clearance within the chamber.

Abstract: In a vibration isolator wherein an inner and an outer cylindrical fittings are connected by a rubber elastomer between both fittings; in the rubber elastomer above and below the inner cylindrical fitting, hollow spaces are formed circumferentially in a larger width, in a cross-section square to the axial direction, than an outside diameter of the inner cylindrical fitting; and lateral portions as support arms of the rubber elastomer between the hollow spaces support the inner cylindrical fitting to the outer cylindrical fitting, in order to lower the dynamic spring rate in the lateral direction square to the axial direction and facilitate the tuning of rigidity, without changing the vibration-isolating characteristics in the vertical direction and without deteriorating the durability, small vacancies are provided in the lateral portions at a distant position inboard from the outer cylindrical fitting.

Abstract: In a resilient bush (2) of the outer sleeveless type and wherein a resilient body (21) fixed to the outer circumference of an inner sleeve (20) is directly brought into contact with the inside face of the support hole of an article to be supported, an inserted sleeve (22) being embedded in the resilient body (21), resistance to withdrawal from the support hole can be increased and performance is improved by making the initial compression ratio of the resilient body (21) large. Flanges (22a, 22b) that bend in the diametrically outwards direction are formed at both ends of the inserted sleeve (22), and it is arranged for these flanges (22a, 22b) at both ends to extend outwards in the diametrically outwards direction from the projection plane in the axial direction of the support hole, in a condition in which the resilient bush is fitted into the support hole.

Abstract: A vibration isolating bushing including: an elastic body disposed in between and elastically connecting an inner sleeve and an outer sleeve surrounding the inner sleeve. The elastic body has two pairs of axial bores diametrically opposed to each other and axially extends therethrough between the inner and outer sleeves to be independent of each other, and is circumferentially divided in terms of stress transmission by the two pairs of axial bores into two pairs of segments diametrically opposed to each other. Two diametric lines, extending in directions in which the two pairs of axial bores are respectively opposed to each other, intersect obliquely so that the two pairs of segments are made different from each other in their circumferential lengths for differentiating spring characteristics of the bushing in two diametric directions in which said two pairs of segments are opposed to each other, respectively.

Abstract: An elastomer spring for supporting an axially arranged coil spring, in particular in an engine mounting is constructed to reduce the radial loads on the coil spring with simultaneous damping and includes a transversely soft composition for the elastomeric spring. The elastomeric spring is provided with a centering projection which may be introduced into the coil spring and a section which may be deformed by the effect of radial forces, with a molded sheet being provided to stabilize the force carrying section of the elastomeric spring.

Abstract: A hydraulic antivibration sleeve comprising two constrictive strength members interconnected by an elastomer body which defines first and second diametrically opposite working chambers and a side compensation chamber. The two working chambers communicate with each other via a constricted passage, while the compensation chamber communicates with the first working chamber only via another constricted passage. The elastomer wall which defines the second working chamber is free and is not in contact with the inner strength member except in a certain range of values for the radial static load supported by the sleeve: this provides two different modes of operation depending on the value of said static load.

Abstract: A hydraulic engine mount includes a bushing assembly having a core bonded to an inner support structure by an elastomeric material. The inner support structure includes a first ring, a second ring, and a plurality of legs. The first ring includes an annular wall, an outer end wall, and an inner end wall. The second ring includes an annular wall, an outer end wall, and an inner end wall. The legs are integrally formed with and between the first and second rings, so that the first ring, the second ring, and the legs are formed as a one-piece component that does not require a post-forming operation. A housing receives the bushing assembly. Fluid chambers are formed between the bushing assembly and the housing to dampen vibrations as hydraulic fluid is displaced between the chambers.

Abstract: A bearing system for an engine-transmission (motor-transmission) unit transversely installed in a vehicle body of a motor vehicle, includes a first bearing element positioned between the engine and the vehicle body, a second bearing element positioned between the engine or the transmission and the vehicle body, and a third bearing element positioned between the transmission and the vehicle body.

Abstract: A hydraulically damping elastomeric bearing, which is suitable for mountings in a motor vehicle, includes an elastic connecting body which is arranged between a first bearing component and a second bearing component and connects these elastically to one another. Two chambers which are filled with a liquid damping medium communicate with one another via at least one throttle duct. To generate a specific damping characteristic, at least two throttle ducts are provided, which connect the two chambers to one another, the first throttle duct containing an absorber which is adjusted as a function of pressure differences between the chambers in the first throttle duct, the absorber controlling the opening cross-section of the second throttle duct as a function of its adjusting movements.

Abstract: A vibration isolator includes an inner cylindrical metal member, an outer cylindrical metal member located outside the inner cylindrical metal member in a radial direction, and a rubber elastic member interposed between the inner and outer cylindrical metal members so as to elastically connect between these metal members, and is supported by a support metal member forced and fixed into an axial hole of the inner cylindrical metal member. The inner cylindrica metal member is coaxially bulged in a radial direction.

Abstract: A hydraulically damping rubber is provided with an uncoupling element. The bearing has an elastomer arranged between an essentially cylindrical inner part and a cylindrical outer sleeve and connected to the inner part by vulcanization. The hydraulically damping rubber bearing has chambers for receiving a damping agent. The chambers are connected by at least one channel arranged in a channel carrier. The uncoupling element is provided for uncoupling the damping action caused by the circulation of the damping agent in the channel or channels against forces of low exciting amplitude introduced into the bearing. The uncoupling element is a separate component from the hydraulically damping rubber bearing, arranged in a recess in a channel carrier space of the bearing.

Abstract: An aggregate bearing (1) in bushing-form, having an outer ring (2) and an inner support element (4) and rubber springs (5, 6) arranged in-between, wherein the outer ring (2) is provided with cut-outs (10, 11) at least in the connecting regions (8, 9) of the rubber springs (5, 6), preferably in the main load direction (7); and the cut-outs (10, 11) are provided with end beads (12, 13) which project beyond the outer contour of the outer ring (2).

Abstract: An aggregate bearing (1) in bushing form having an outer ring (2) and an elastomeric coating (3) and an inner support part (4), as well as rubber springs (5, 6) arranged in-between; axial penetrations (8, 9) are provided between the outer ring (2) and stop buffer (7) located in the direction of the main load (10); and, prior to the bearing being put into use for the first time, the stop buffer(7) located in the main load direction (10) and the inner elastomeric coating (3) of the outer ring (2) are connected to one another by at least one cross-piece (12) arranged in the axial direction of the bearing (1) and designed as a preset rupture joint, in order to achieve as early a progression onset as possible in the direction of the pull.

Abstract: In a vibration damping apparatus for supporting an engine on a vehicular body, an elastic member damps a vibration developed from the engine, a stopper is brought in contact with the elastic member to limit a transmission of a fluctuation developed on the engine therethrough, and a vehicular body support member integrated with the elastic member to fix the elastic member on the vehicular body, the elastic member including a stopper fixing portion placed at a first position opposite to a second position faced toward the engine to fix the stopper at the first position and the stopper including a bending portion, one side thereof with respect to the bending portion being fixed onto the engine and the other side thereof with respect thereto being fixed onto the stopper fixing portion of the elastic member so as to grasp the elastic member between both sides of the stopper.

Abstract: A liquid-filled vibration-proof device constructed so that the positioning and supporting function of a partition is performed firmly and a port opening of an orifice passage in the partition is not obstructed to ensure a sufficient opening area of the port opening. To that end, a diaphragm and a partition located inwardly thereof are hermetically fixed to a cylindrical fitting at a side opposing a vibration-isolating base thereby partitioning an enclosure between the vibration-isolating base and the diaphragm into two liquid chambers, the both liquid chambers being put in communication with each other through the orifice passage; the vibration-isolating base is provided at a marginal part of its inner face with protruding portions for positioning, with which an upper marginal portion of the partition is in opposed contact, disposed circumferentially at intervals at plural positions so as not to impede the flow of the port opening.

Abstract: An object of the present invention is to provide a liquid sealing type body mount the structure of which allows a stopper provided in liquid chambers to function properly with high rigidity and also to improve the durability.

Abstract: A bearing assembly permits limited rotational movement of component parts and includes a bearing body and a deflectable rotational body attached to the component part. The rotational body is disposed at a distance from the bearing body so that the bodies conjointly define a space therebetween. An intermediate element is disposed in this space and is connected to the bearing body and the rotational body. The intermediate element includes an axial component and a radial component and these components extend one into the other to form a layer so as to prevent a direct contact of the bodies with each other even under a dynamic loading of the bearing assembly while at the same time facilitating a limited rotational movement of the rotational body and the component part relative to the bearing body.

Abstract: There is provided a difference in dynamic characteristics between one and the other of vibration isolating rubber members which are provided as a pair on left and right sides of an automotive vehicle. This causes a difference &dgr; in phase between vibrations transmitted via the left and right vibration isolating rubber members, and vibrations from the left and right vibration isolating rubber members cancel each other, whereby the vibration of the body of the automotive vehicle can be reduced.

Abstract: An outer peripheral portion of an elastic member is formed integrally to a periphery of an inner cylinder that is unconnected and intimately contacted to an inside of the outer cylinder. A partition wall is formed between a main liquid chamber and an auxiliary liquid chamber which are communicated with an orifice passage, and end walls are formed at both ends in an axial direction, whereby they are respectively adjusted to resonate by membrane in medium to high frequency range. Cooperative resonance frequency of the partition wall with the end walls are set in the medium to high frequency range. In the main liquid chamber, a stopper is projected integrally from a main liquid chamber cover which is provided along an interior face of the outer cylinder and liquid column resonance is generated respectively between the partition wall and the end walls.

Abstract: This anti-vibration mount, comprising a base and a head connected by an elastomer body, is intended to be interposed between two rigid elements to damp the vibrations between these two elements, on a central axis. This mount comprises a non-extensible limiting cable forming a loop, which is fixed to the base and to the head, this cable comprising a first part which is supported on the head by winding around it and which extends towards the base from the head, and a second part which runs along at least a first portion of the periphery of the base and winds around at least a first return element integral with the base, level with two joints between this second part and the first part of the cable, the cable being restrained by the return element.

Abstract: An elastomeric mounting suitable for use in the suspension of an off-road vehicle comprises two rigid end members (11, 12) maintained spaced apart by an intervening tubular body (13) of elastomeric material which defines a central chamber (26), a connecting member (36) arranged to extend through the central chamber to interconnect the end members (11, 12) and serve at least to resist more than a predetermined separation of the end members, and buff member (37) provided to act in series with the connecting member (36) at a position between said connecting member and one (12) of the rigid end members thereby to cushion the transmission of force between the end members when the connecting member is loaded in tension.

Abstract: A hydraulic bearing including a journal bearing (1) and a supporting bearing (2) which are connected to each other by a spring body (3) made of a rubber elastic material and border on at least one working space (4) and at least one compensating space (5), the working space (4) and the compensating space (5) being each filled with a damping fluid and communicating through a damping device (6) so as to conduct fluid. Damping fluid can flow through the damping device (6) when the journal bearing (1) and supporting bearing (2) are radially displaced relative to one another.

Abstract: A vibration-preventive support device, in which an inner cylindrical body is disposed within an outer cylindrical body and a vibration absorbing body is disposed in such a manner that the two ends thereof are respectively connected to the lower end side end edge of the outer cylindrical body and the upper end side end edge of the inner cylindrical body. At this time, the outer cylindrical body, inner cylindrical body and vibration absorbing body are formed in an integrally united body by molding elastic material, that is, rubber. The vibration preventive support device is arranged such that, in a first condition, the inner cylindrical body is entirely outside a volume encompassed by the outer cylindrical body and, in a second condition, the inner cylindrical body is disposed within the encompassed volume of the outer cylindrical body.

Abstract: A hydraulically damping rubber support comprises an outer tubular part, an inner tubular part arranged within the latter at a distance therefrom, and a first rubber part inserted between them with at least one chamber filled with damping medium. A further tubular component is arranged within the inner tubular part and a second rubber part is arranged between the inner part and the further tubular component.

Abstract: Mechanical coupling for elastic axial and radial constraint with torsional freedom, especially for elastic pivots and suspensions and the like, comprising, according to the invention, a composite tubular member made of metal and elastomer (11) that exhibits high axial and radial rigidity and the ability to absorb vibrations induced by the mechanical system in which it is fitted and to compensate for manufacturing tolerances in that system, and a tubular insert (15), made of nonwear plastic material with a low coefficient of friction which is coaxial and integral, in the form of a fixed inner sleeve, with said composite tubular member (11) and engages with a rotating metallic component (16) fitted coaxially with respect to said tubular insert to provide the torsional freedom.

Abstract: A pivot bushing for a suspension system has an inner metal and an outer metal with an elastomeric bushing disposed between the metals. The outer metal has one end which is partially closed by an inwardly curved portion and one end which is open. The assembly of the bushing is through the open end. Once assembled the open end is closed by placing a cover over the open end and crimping the cover to a flange formed at the open end. In another embodiment, the cover is inserted into the outer metal and the outer metal is crimped to secure the cover in place.

Abstract: A bushing is disclosed with a sleeve. The sleeve member has an inner surface and a cavity. A core member is disposed in the cavity. A pair of elastomeric members are disposed in the cavity. One of the pair of elastomeric members is adjacent to the core. The other of the pair of elastomeric members is adjacent to the inner surface. The one of the pair of elastomeric members has a modulus that is greater than the other of the pair of elastomeric members so that one of said pair of elastomeric members absorbs low frequency vibration and the other of the pair of elastomeric members absorbs high frequency vibration.