Abstract: An adaptive hydraulic engine mount for mounting an engine to a frame of a motor vehicle includes a pumping chamber and reservoir filled with damping fluid and an orifice track or damping channel communicating the pumping chamber with the reservoir. A decoupling diaphragm responds to pressure level in a control cavity to control pumping of damping fluid through the damping channel, thereby controlling the dynamic stiffness of the mount. Upon actuation of a control valve, the pressure level in the control cavity is changed to achieve a level of damping greater than the low damping level. According to another embodiment of the invention, the control cavity can be communicated with engine vacuum to achieve maximum damping, or air may be trapped in the control cavity to achieve an intermediate level of damping, or the control cavity may be communicated to atmosphere to provide low levels of damping.

Abstract: A fluid-filled vibration damping device including: (a) a first mounting member; (b) a second mounting member having axially opposite open ends, one of which is open toward the first mounting member; (c) an elastic body which connects the first and second mounting members and which fluid-tightly closes the one of the axially opposite open ends of the second mounting member; (d) a movable member which is displaceable in the axial direction and which fluid-tightly closes the other of the axially opposite open ends of the second mounting member; and (e) an actuator which displaces the movable member in the axial direction so as to control damping characteristics of the vibration damping device and which is disposed adjacent to the second mounting member. The actuator is provided with a generally tubular-shaped connector which connects the actuator with the second mounting member.

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: A two-chamber engine mount, especially for motor vehicles, includes a housing having an interior accommodating a supporting spring made of an elastomeric material dividing the interior of the housing into a working chamber and a compensating chamber closed off from the surroundings by an elastomeric diaphragm. The working chamber and the compensating chamber are filled with a hydraulic fluid and are connected to each other through an overflow passage. At least one plunger is configured as a radial stop in the compensating chamber.

Abstract: Fluid-filled active elastic mount includes a fluid chamber partially defined by an elastic body elastically connecting two spaced-apart mounting members, a movable plate partially defining the fluid chamber and displaceable to change a pressure of the fluid in the fluid chamber, and an actuator constituted by an oscillating force generator having a yoke member, a coil disposed in an annular groove of the yoke member and an oscillating member disposed on one side of said yoke member where the annular groove is open with a predetermined axial distance therebetween, the yoke member being fixedly supported by the second mounting member, while the oscillating member being fixed to the movable plate, so that the oscillating member is oscillated by the magnetic attraction generated upon energizing the coil so as to displace the movable member, wherein at least one of the open end portions of an inner and an outer circumferential wall portion of the yoke member is directly opposed in an axial direction to an inner an

Abstract: A fluid-filled vibration damping device including, an elastic body and a flexible diaphragm is divided by a partition member in to pressure-receiving and an equilibrium chambers communicating with each other through a first and second orifice passages. The second orifice passage includes a pair of split passages formed at respective circumferential positions of the partition member and is open at its first open end in the pressure-receiving chamber and at is its second open end located in the central portion of the partition member in the equilibrium chamber. A pair of movable members disposed in diametrically-opposite portions radially inward of the split passages. Each movable member is displaceable based on a pressure difference between a fluid pressure in the pressure-receiving chamber, and a fluid pressure in the equilibrium chamber applied to the other surface of the movable member.

Abstract: A fluid-filled vibration damping device including a first mounting member, a second mounting member including a tubular portion having an end open toward the first mounting member, the first and second mounting members being spaced from, and opposed to, each other, an elastic rubber body which elastically connects the first and second mounting members to each other, and which fluid-tightly closes the open end of the tubular portion of the second mounting member and cooperates with the tubular portion to define a fluid chamber filled with a non-compressible fluid, and a working member which is supported by the first mounting member such that the working member extends, in the fluid chamber, in a direction substantially perpendicular to a central axis of the tubular portion of the second mounting member, and thereby divides the fluid chamber into two divided chambers which are located on opposite sides of the working member, respectively, and which are communicated with each other via a fluid-flow restricting p

Abstract: A liquid sealed cylinder vibration preventing apparatus including a main shaft metal fitting, an intermediate cylinder metal fitting outside the main shaft substantially coaxial and having windows facing each other in a diameter direction, a rubber elastic body between the main shaft and intermediate cylinder metal fittings to connect the main shaft and intermediate cylinder metal fittings and having a recess opened to each window, a first diaphragm on one of the windows and disposed in one of the recesses, an orifice forming member on the rubber elastic body, the orifice forming member forming a main liquid chamber, a sub liquid chamber, a first orifice passage and a second orifice passage, an outer cylindrical metal fitting outside the intermediate cylinder metal fitting substantially coaxial and having a communicate window communicated with atmosphere, and a second diaphragm held by the outer cylinder metal fitting and facing the second orifice passage.

Abstract: A dual-mode twin-chamber thrust bearing has a work chamber and an equalizing chamber. The chambers are separated by a partition. The partition has passageway in the center that is closable via an actuator, and also has a damping channel that hydraulically connects two chambers. The partition also has holes. A membrane is located in a recess in the partition. The partition covers the holes in the partition and can be tightly sealed. An axially movable pressure disk secures or releases the membrane as it is pushed by the actuator. The pressure disk is provided with holes in the area of the partition holes.

Abstract: A liquid chamber is arranged with a first support member 1, a second support member 2 and an elastic member 3, an inside of the liquid chamber is divided to a main liquid chamber 11 and an auxiliary liquid chamber 12 by a partition member 10 and both chambers are communicated with a damping orifice passage 14 and an idle orifice passage 15. On an inner face of a conical portion 4 of the elastic member 3, thin wall portions 7 are provided by forming recess 6 at axially symmetrical position so as to yield a minimum value for a dynamic spring characteristic against a vibration input in a designated medium frequency by a membrane resonance. A non-circular medium to high frequency device 20 projecting into the main liquid chamber 11 is provided to the first support member 1 so as to resonate by liquid column against a vibration input in a designated high frequency.

Abstract: A liquid filled vibration isolating device which is excellent in reliability, functionality, mounting and assembly of products is provided. A partitioner 7 has a three member constitution consisting of an upper-partitioner member 26, a lower partitioner member 27 and an elastic member 28. An outer peripheral end portion of the lower partitioner member 27 is extended outwardly in a radial direction and only an extended portion 29 is fixedly secured to a mounting metal fitting of a vibration isolating device body by caulking, and an upper end outer peripheral portion of the upper partitioner member 26 is pressed onto a notched portion 30 at a liquid-chamber-side outer periphery of a vibration isolating base body 4 and then positioned there thus facilitating assembling of products while assuring reliability, functionality and mounting.

Abstract: A fluid-filled vibration damping device including a first and a second member, a rubber body which connects the first and second members to each other and which provides a wall of a fluid chamber, and a working member which is supported by the first member so as to extend in a first direction perpendicular to a second direction in which a vibrational load is applied to the damping device, thereby dividing the fluid chamber into two divided chambers which are located on opposite sides of the working member, respectively, and which are communicated with each other via a fluid-flow restricting passage defined by at least the working member, a length of the restricting passage in the second direction and/or a width of the passage in the first direction changing in a circumferential direction of the working member.

Abstract: A mount is provided with a pair of spaced apart support members. One of the support members includes a stop. A vibration isolation member is connected to both support members. The vibration isolation member has a rubber block for absorbing unwanted vibrations. A restraint member is connected to the rubber block to reduce the mass of the vibrating components so as to prevent reducing the resonant frequency of the device. The restraint member has a first portion and a second portion. The design is compact and does not permit the stop to extend above the restraint member in order to permit unrestrained travel of the first support member toward the second support member when the mount is in a compression mode. The second portion engages the stop to limit the stretch of the rubber block away from the support member and provides a heat shield for the rubber block and stop.

Abstract: A switchable, hydraulically damping mount. The mount includes a working space and an equalization space that are filled with damping fluid and are connected in fluid-conveying fashion by way of at least one orifice in a partition wall. The orifice is closable by an actuator of an adjusting apparatus. The actuator has, on the side facing the working space, a variable-volume gaseous medium-filled chamber that is connected to the atmosphere through at least one connecting opening.

Abstract: An elastic mount, especially an engine mount for motor vehicles includes at least two resilient elements connected in parallel to each other. Through force applicators, the two resilient elements are connected selectively to a source of vibration. The mount includes a coupler for selectively engaging the force applicators with the resilient elements. The coupler includes a first coupling element and a second coupling element selectively connectable by an actuator to ensure that only low travel and force components are needed for selection and to ensure that an axial decoupling of the non-effective resilient element exists in the released condition. The second coupling element swivels to be selectively connected to the first coupling element by the actuator. The second coupling element is connectable to the force applicator of the second coupling element in the engaged condition and is configured as a rotary body swivelably mounted in the released condition.

Abstract: Fluid-filled vibration damping device having a primary fluid chamber partially defined by an elastic body elastically connecting two spaced-apart mounting members and located on one of opposite sides of a partition structure having an orifice passage, an auxiliary fluid chamber partially defined by a flexible diaphragm and located on the other side of the partition structure, and a movable rubber plate partially defining the primary fluid chamber and held by the partition structure, wherein the partition structure comprises a support member including a cylindrical engaging portion, and at least one fluid-tightly fitted component superposed on the support member and each including a cylindrical engagement portion fitted in the engaging portion of the support member, and the movable rubber plate is bonded at its peripheral portion to the inner circumferential surface of the cylindrical engaging portion of the support member which is covered by a sealing rubber layer, and wherein the cylindrical engaging portion

Abstract: Shock absorber including a cylinder body and a piston cooperating to two chambers one and the other of which respectively function as high-pressure and low-pressure chambers, a piston rod fixed to the piston, and a damping force control device including (i) a hard valve which permits a flow of a working fluid from the high-pressure chamber toward the low-pressure chamber when a difference between fluid pressures in the high-pressure and low-pressure chambers is larger than a predetermined threshold, (ii) a soft valve which permits the fluid flow from the high-pressure chamber toward the low-pressure chamber when the pressure difference is not larger than the threshold, and (iii) a flow restricting fluid passage disposed in parallel with at least one of the hard and soft valves, and wherein at least one of the hard and soft valves and the soft valve permits a flow of the fluid therethrough during both elongation and contraction of the shock absorber.

Abstract: An anti-vibration support is provided having two rigid frames linked to one another by an elastomer body which is applied against a rigid partition to delimit a hydraulic working chamber connected to a compensating chamber by a throttled passage. The rigid partition has a flexible membrane inserted between the working chamber and a pneumatic chamber controlled by a solenoid. The solenoid is mounted on a support block which also incorporates a pneumatic coupling and an electrical connector, this support block having an annular flange which delimits the pneumatic chamber and clamps the flexible membrane against the rigid partition.

Abstract: A railcar cushioning device with a gas charged cylinder and a piston contained in the cylinder for cushioning buff and draft impacts. An elastomer spring is contained in the cylinder between the piston and an end of the cylinder to locate the piston in a neutral position.

Abstract: A liquid sealed type bushing including an outer cylinder, an inner cylinder and an elastic member. Recesses are formed on a middle portion of the elastic member. The elastic member between the recesses is adapted to be a partition member and a thin wall portion is formed by providing a through hole in the partition member, and an outer peripheral portion of the partition member is made to contact but not combine with an inner face of the outer cylinder. Within the recess, a medium to high frequency device is supported by the inner cylinder. By overlapping a peak caused by a membrane resonance owing to the thin wall portion of the partition member, and a minimum value caused by a liquid column resonance of the medium to high frequency device, a low dynamic spring constant is attained in a medium to high frequency region.

Abstract: This invention is aimed to obtain a liquid filled vibration isolating device, which is able to facilitate assembling procedure without adversely affecting shape or dimension of a caulked portion and without deteriorating mounting performance or reliability, and is able to promote vibration isolating effect both at a low frequency region and at a medium and high frequency region.

Abstract: Disposed is a supporting mount for a power plant such as an engine or a transmission. The power plant includes an inner pipe and an outer pipe, a vibration absorbing member interposed between the inner pipe and the outer pipe, a rolling restriction member connected to the inner pipe and which restricts the power plant from vibrating more than a predetermined amount with relation to a vehicle frame, first and second fluid chambers formed in the vibration absorbing member and which are filled with operating fluid, first and second fluid communicating passages communicating the first and second fluid chambers, a displacement reaction portion provided in the outer pipe and which reacts to substantial movement by the outer pipe by contact with the rolling restriction member, and a fluid passage adjusting portion which decreases a size of the second fluid communicating passage in direct proportion to the amount of rolling of the engine or transmission to which the displacement reaction portion responds.

Abstract: A liquid chamber is arranged with a first support member (1), a second support member (2) and an elastic member (3), an inside of the liquid chamber is divided to a main liquid chamber (11) and an auxiliary liquid chamber (12) by a partition member (10) and both chambers are communicated with an orifice passage (14). On an inner face of a conical portion (4) of the elastic member (3), thin wall portions (7) are provided by forming recess portions (6) at axis symmetrical positions so as to yield a minimum value for a dynamic spring characteristic against a vibration input in a designated medium frequency by a membrane resonance and a medium to high frequency device (17) projecting into the main liquid chamber (11) is provided to the first support member (1) so as to yield a minimum value for the dynamic spring characteristic against a vibration input in a designated high frequency.

Abstract: An engine mount which is capable of changing its vibration transmission characteristics with a simple structure using an inexpensive actuator is provided. A partition is inserted to a side member to which a mount rubber (rubber vibration isolator) of the engine mount is spliced to close a space between the mount rubber and to create an air chamber. An air duct pipe which communicates with the air chamber is connected to the side member and is connected to a VSV (vacuum switching valve) via a connection pipe. The VSV is controlled to ON/OFF states based on a driving voltage Vout from an ECU which corresponds to explosive vibrations of the engine to switch pressure within the air chamber to negative pressure of a vacuum tank in which negative pressure of an intake manifold is accumulated or to atmospheric pressure, interlocking with the vibration of the engine.

Abstract: A fluid damper to damp unwanted vibration between a first member (21) and a second member (23, 23'), such as between a rotor blade and hub within a helicopter rotor system. According to a first aspect, the fluid damper (20) includes an outer member (22), first and second inner members (24, 24'), first and second elastomeric elements (26, 26'), a hollow (28), a divider (30) subdividing hollow (28) into first (32) and second (32') operating chambers, a connector (34) interconnecting first (24) and second (24') inner members, a fluid passageway (36) interconnecting operating chambers (32, 32'), a fluid (38) contained within said passageway (36) and operating chambers (32, 32'), and a volume compensator (40) including a compensator chamber (42) housed within one of first (24) and second (24') inner members. In another aspect, an annular bubble trap (58) is formed in a wall portion (62) of the operating chamber (32) to focus any air bubbles into a fill port (54) during fill.

Abstract: A partitioning member is disposed within an outer cylinder metal fitting. A space which is defined by the partitioning member and an elastic body forms a main liquid chamber. The main liquid chamber and a first auxiliary liquid chamber are disposed with the partitioning member therebetween. A shake orifice and an idle orifice are formed at the partitioning member and the idle orifice is opened and closed by a rotor. A second diaphragm is disposed at the first auxiliary liquid chamber side and a clearance between the second diaphragm and the lower surface of the partitioning member forms a second auxiliary liquid chamber. When shake vibration which is low frequency vibration is generated, the vibration is damped and absorbed by the shake orifice. When idle vibration is generated, the idle orifice is opened and the high frequency vibration is absorbed.

Abstract: A hydraulic sleeve having at least two liquid-filled working chambers. These chambers are in flow communication with one another through a damping channel. The hydraulic sleeve comprises an inner supporting body surrounded by an outer supporting body. A radial clearance is maintained between the inner and outer supporting bodies. An elastic spring element of elastomeric material is arranged in the gap formed by the radial clearance, and at least one separately produced insertion part is arranged in at least one of the working chambers. The elastic spring element has an essentially triangular cross-section and bounds the first working chamber. The insertion part is arranged within the triangularly bounded, first working chamber, has an essentially .OMEGA.-shaped cross-section, and divides the first working chamber into three sectional chambers. The sectional chambers are in flow communication with one another through two throttle orifices that are bounded by the elastic spring element and the insertion part.

Abstract: A hydraulic mount is operable in soft and firm modes and includes a valve positioned at the partition between the working chamber and the reservoir. A normally open fluid path extends through the partition and opens between the working chamber and the reservoir for soft operational characteristics useful in attenuating low amplitude vibrations. The valve body and the partition together define a control chamber in the fluid path. The control chamber is open to the reservoir through lateral openings in the valve body so that fluid pressure in the control chamber is approximately at atmospheric pressure so that a small actuator can move the valve. When the valve is closed the fluid path is closed for firm operational characteristics in controlling large amplitude inputs such as those from torque transients.

Abstract: The present invention provides a liquid enclosing type vibration isolating mount comprising a vibration isolating base member 16, a diaphragm 20 and a partition member 22 for vertically dividing a space between the former two into upper and lower liquid chambers 24 and 26. The partition member 22 is made of a press worked metal plate which is held in contact with the periphery of the diaphragm 20 to provide an orifice path 28 for establishing communication between the liquid chambers 24 and 26. The vibration isolating mount of the present invention has the following advantages: The partition member 22 is made of a press worked metal plate so that the manufacturing cost can be saved; since the periphery of the diaphragm 20 is used as a part of the wall of the orifice path 28, the axial length of the mount can be shortened and the shape of the mount is simplified; and the pressing process of the partition member 22 is facilitated.

Abstract: A sleeve-type rubber shock absorber with hydraulic damping for mounts in motor vehicles includes an inner mounting sleeve (1), an outer mounting sleeve (2) surrounding same at a radially spaced location, at least one elastomer body (3), which is adheringly arranged between the two mounting sleeves and forms at least one chamber (4) filled with hydraulic damping agent. A cap (5) sealingly closes the sleeve-type rubber shock absorber, forming a second chamber (6). A channel plate (7) is provided which contains a throttle channel (7.1) connecting the chambers (4 and 6), wherein the outer bearing sleeve (2) has at least two different external diameters, of which the mainly radially loaded area of the smaller diameter is inserted into the motor vehicle component (8). At least two stop buffers (9) are arranged distributed over the circumference and are provided on the corresponding area of the inner mounting sleeve (1).

Abstract: A hydraulic antivibration support comprises a strength member connected to a plate by an elastomer body whose base is pressed against the plate to define two hydraulic chambers and a narrow channel, all filled with liquid. A perforated insert is embedded in the base of the elastomer body and is crimped to the plate via two fixing edges that are interconnected by two free edges of the base. A rigid cover covers the elastomer body and has flanges which are fixed directly against the plate, the flanges extending towards the elastomer body in the form of bearing zones which press against the free edges of the base of the elastomer body.

Abstract: A hydraulic antivibration support has a strength member connected to a plate by an elastomer body whose base is pressed against the plate to define two hydraulic chambers and a narrow channel, all filled with liquid. The base of the elastomer body has two opposite sides that are crimped onto the plate and two free sides that are not crimped, each of the free sides having a projecting peripheral sealing lip which is compressed against the plate and which is of asymmetrical profile that is not perpendicular to the support face of the plate, being inclined throughout in the same direction relative to the support face.

Abstract: A fluid-filled vibration damping device wherein two mutually spaced-apart mounting member are elastically connected by an elastic body, which cooperates with a first movable member to define a primary fluid chamber communicating through an orifice with an auxiliary fluid chamber partially defined by a second movable member, and the first and second movable members partially define respective mutually independent first and second working air chambers on their sides remote from the primary and auxiliary fluid chambers, and are oscillated by periodic change of air pressures in the working air chambers.

Abstract: A vibration damping and isolation apparatus including a passive damping mechanism and an active enhancement mechanism. The passive damping mechanism operates to dissipate vibratory and shock forces applied to the vibration damping and isolation apparatus. The passive damping mechanism includes first and second spaced damping elements. A first resilient structure connects the first damping element to the second damping element to define a primary fluid chamber between the first and second damping elements. The passive damping mechanism further includes a second resilient structure that defines a secondary fluid chamber which is in fluid communication with the primary fluid chamber via a fluid flow orifice. A fluid fills the primary fluid chamber, the secondary fluid chamber and the fluid flow orifice.

Abstract: A liquid filled vibration isolating mount has a rigid tubular fitting defining an interior fitting cavity, an upper opening and a lower opening. A vibration isolating base body formed of elastic material is fitted in the upper opening of the rigid tubular fitting. A diaphragm seals the lower opening of the rigid tubular fitting and a partition is disposed in the interior fitting cavity of the rigid tubular fitting between the vibration isolating base body and the diaphragm to divide the interior fitting cavity into a first liquid chamber and a second liquid chamber. The first liquid chamber has a first liquid chamber wall formed at least in part by the vibration isolating base body, the partition and the rigid tubular fitting. The second liquid chamber has a second liquid chamber wall formed at least in part by the diaphragm and the partition. The partition defines an orifice communicating the first and the second liquid chambers with each other.

Abstract: A vibration isolating apparatus mainly used for supporting an engine for a compact vessel which is structured such as to securely perform a stopper operation and to widely improve a durability at a time when a large load is given, without changing a fastened position, a height and a mounting operability.

Abstract: The present invention provides a liquid-enclosing type vibration isolating device of all around stopper type with a reliable stopper action at a time of a large displacement of a main body metal fitting in the device, in a liquid-enclosing type vibration isolating device in which a main body metal fitting and a mounting metal fitting disposed thereunder are connected to each other through a vibration isolating body formed with a rubber elastic member with a liquid being sealed therewithin, the lower mounting metal fitting comprises a boss metal fitting integrally formed with a mounting bolt and inserted into the vibration isolating body, a spacer metal fitting having a flange portion for a stopper at the upper portion and fitted into the boss metal fitting, and a mounting plate metal fitting fixed to the boss metal fitting so as to hold the spacer metal fitting in a fixed state, a required clearance is provided between the flange portion of the spacer metal fitting and the plate metal fitting, and a lower end

Abstract: An orifice plate is projectingly provided within a fluid chamber formed inside an elastic block to damp the medium to high frequency vibrations. The orifice plate is arranged to have a projection area which is maximum in the principal input direction Z of vibrations to be isolated, medium in the direction Y of the two input directions X and Y which are perpendicular to the direction Z, and minimum in the direction X by providing a recess at a bottom thereof which traverses in the same direction (as the direction X). The resonance frequency is high in the direction Y and the circumferential edge portions of the projection surface in the direction Y are adapted to serve as stoppers which perform the displacement control in the direction X. In another embodiment, the stoppers are asymmetrically shaped.

Abstract: A hydraulic antivibration support comprises a strength member connected to a plate by an elastomer body whose base is pressed against the plate to define two hydraulic chambers and a narrow channel all filled with liquid. A perforated sheet metal insert embedded in the base of the elastomer body is crimped to the plate via two fixing edges that are interconnected by two free edges of the base. The perforated insert has a stamped corrugation which defines the narrow channel and whose outer side wall extends around the entire periphery of the plate.

Abstract: A hydraulic antivibration support comprises a strength member connected to a plate by an elastomer body whose base is pressed against the plate to define two hydraulic chambers and a narrow channel, all filled with liquid. A perforated insert embedded in the base of the elastomer body has tabs crimped over two opposite reception edges of the plate, which edges form rims projecting away from the perforated insert. Each tab has a free end folded behind the corresponding rim to anchor the tab onto the rim.

Abstract: A vibration isolating apparatus includes a first mounting member; a second mounting member having a through hole; an elastic body provided to be elastically deformable and mounted in such a manner as to be interposed between the first mounting member and the second mounting member; a liquid chamber of which at least a portion of a partition wall is formed of the elastic body and the second mounting member and which is filled with a liquid; and an elastic membrane provided to be elastically deformable and fixed to a portion of the second mounting member forming the partition wall of the liquid chamber so as to cover the through hole. Accordingly, even when vibration of a high frequency which cannot be damped by the elastic body and a liquid is transmitted from the side of a vibration-generating portion, the elastic membrane elastically deforms and the dynamic spring constant becomes low. As a result, vibration is not easily transmitted to the side of a vibration-receiving portion.

Abstract: A hydraulically damping elastic bearing including an inner tube, an outer tube that is placed concentrically or eccentrically apart from the inner tube, and a rubber part inserted in between the inner tube and the outer tube. In the rubber part at least one chamber, filled with damping agents, is placed. Within the chamber at least one elastic end stop body is provided, which end stop body is, if necessary, surrounded with an element that has a greater strength than the end stop body.

Abstract: The hydraulic antivibration support has two rigid strength members interconnected by a bell-shaped elastomer body, a flexible elastomer wall connected to the second strength member, and a rigid partition secured to the second strength member and defining both a working chamber on its elastomer body side and a compensation chamber on its flexible wall side. These two chambers are filled with liquid and are connected to each other via a narrow channel, via a central nozzle fitted with an axially movable shutter, and via an annular flap disposed around the central nozzle between two grids. One of the grids is axially slidable and is connected to the shutter so as to block the flap when the shutter is open.

Abstract: A rail car buffer has a capsule body and a spring assembly with an elastomer spring and a gas filled hydraulic spring in the body. Expansion of the buffer after collapse is snubbed by the gas filled hydraulic spring to convert energy stored in the elastomer spring to heat.

Abstract: Mounting device including a fluid-filled cylindrical elastic mount, and a synthetic resin bracket having a cylindrical bore in which the elastic mount is fixed, wherein the elastic mount includes a shaft member, an intermediate sleeve disposed radially outwardly of the shaft member and having a window, an elastic body connecting the shaft member and the intermediate sleeve and having a pocket open in the outer circumferential surface of the intermediate sleeve through the window, and an outer sleeve fitted on the intermediate sleeve through a sealing rubber layer to fluid-tightly close the window, for forming a fluid chamber filled with a non-compressible fluid, and wherein the sealing rubber layer is compressed by a compressive force generated based on a pressure of injection of the synthetic resin of the bracket into a mold when the bracket is formed in the mold, in contact with the outer circumferential surface of the outer sleeve, and is thereby fitted on the elastic mount upon formation of the bracket in

Abstract: A hydraulically damping engine mounting for mounting a drive unit. Two fastening parts are connected to one another by way of an elastic element. A decoupling device is integrated with one of the fastening parts. The internal chamber formed by the fastening parts and the elastic element is divided into two chambers. The two chambers are connected to one another by a damping channel. The fastening parts and the elastic element which contains the chambers are located around a center axis which runs at right angles to the vertical axis of the drive unit.

Abstract: A hydraulic bearing includes a supporting bearing and a bearing member braced against each other by an essentially truncated conical elastic spring element of an elastomeric material. The spring element bounds a working chamber and a compensating chamber filled with damping fluid, these chambers being separated from one another by a dividing wall and being in fluid communication with one another via a damping channel. The elastic spring element has two compression-spring sections radially opposite one another and two push-action-spring segments radially opposite one another and the compression-spring sections. The supporting bearing radially overlaps the elastic spring element in the compression-spring sections, and the elastic spring element and the supporting bearing are interconnected by a radial surface area.

Abstract: A hydraulic bearing, having a working chamber filled with a damping fluid and a compensating chamber. The chambers are separated from one another by a dividing wall and are in fluid communication with one another via a damping channel, to damp low-frequency vibrations. The damping channel is formed by two subchannels which, in terms of technical function, are arranged in a series connection. The subchannels are arranged axially on both sides of a diaphragm that is capable of vibrating. The diaphragm forms a component of the dividing wall, and the diaphragm is provided with a channel separation and has at least one opening within the channel separation for fluid communication of the subchannels with one another.

Abstract: A vibration isolating apparatus includes: a first mounting member; a second mounting member; an elastic body provided between the first mounting member and the second mounting member; a main fluid chamber, the elastic body forming a portion of a partitioning wall of the main fluid chamber such that the main fluid chamber can expand and contract; a first auxiliary fluid chamber disposed so as to be separated from the main fluid chamber; a first restricting passage communicating the main fluid chamber and the first auxiliary fluid chamber; a second auxiliary fluid chamber disposed so as to be separated from the main fluid chamber; a second restricting passage communicating the main fluid chamber and the second auxiliary fluid chamber; a first diaphragm forming a portion of a partitioning wall of the first auxiliary fluid chamber; a second diaphragm forming a portion of a partitioning wall of the second auxiliary fluid chamber; an air chamber disposed in opposition to the second auxiliary fluid chamber with the

Abstract: A vibration isolating apparatus is provided which absorbs vibration over a wide frequency range. A main fluid chamber and a first sub-fluid chamber are separated from each other by a partitioning member and communicates with each other by a first restricting passage. The main fluid chamber and a second sub-fluid chamber communicate with each other by a second restricting passage. A concave portion is formed in the partitioning member and an elastic-membrane fixing pipe is inserted in and fixed to the concave portion. An outer periphery of an elastic membrane is adhered by vulcanization to an inner peripheral surface of the elastic-membrane fixing pipe. The space between the elastic membrane and the bottom of the concave portion is a gas chamber.