Abstract: An elastomeric loop used as a suspension device, for example for suspending exhaust systems of motor vehicles, includes a closed loop of elastomeric material in which a link chain is embedded, whereby the link chain improves the suspension characteristics of the suspension device.

Abstract: A MacPherson strut type suspension including a shock absorber operatively disposed between vehicle wheels and a vehicle body of a motor vehicle, the shock absorber having a piston rod; a coil spring disposed in association with the shock absorber to elastically support the vehicle body; a core member secured to an end of the piston rod of the shock absorber; an insulator rubber securely connected between the core member and the vehicle body; and a stop device for restricting the movement of the core member in the axial direction of the piston rod of the shock absorber when the axial movement of the piston rod exceeds a predetermined distance, thereby effectively damping high and low frequency vibrations applied to the suspension while prolonging the life of the insulator rubber.

Abstract: A strut type suspension for a vehicle includes a mounting insulator rubber divided into two separate parts, one attached to the piston rod of a shock absorber, and a relatively more rigid one associated with both a spring coil telescoped about the shock absorber and a bumper.

Abstract: A multi-rate side bearing for a railway truck is provided. The side bearing comprises a base plate and an upper plate, with two resilient devices located between the base plate and the upper plate. The resilient devices usually are elastomeric pads of different compression rates and shear stiffness. Under unloaded car conditions, only one pad is in load supporting contact, but under loaded car conditions, both resilient devices contact the upper and base plates to provide load support and car body-truck motion damping.

Abstract: The invention concerns laminated stops of curved shapes, particularly for helicopter rotors. The stop has an inner fitting and an outer fitting connected by cupped elements of a resistant and rigid material alternating with layers of flexible material. The layers of flexible material increase in thickness from their centers outwardly, and the mean thickness of the flexible layers increase from the inner fitting to the outer fitting.

Abstract: A liquid energy absorber device including an elongated liquid energy absorber member mounted on a base, an annular elastomeric member also mounted on the base in surrounding relationship to the liquid energy absorber member, a sleeve mounted on the liquid energy absorber member for sliding movement, a plate connected to the sleeve and supported on the end of the annular elastomeric member remote from the base, grooves in the plate and in the portion of the sleeve facing the liquid energy absorber member to conduct atmospheric air to a space which is formed between the sleeve and the elastomeric member as the latter distorts in operation to thereby cool the liquid energy absorber member and the annular elastomeric member, with the annular elastomeric member being longer than the liquid energy absorber member so that there is deflection of the annular elastomeric member prior to the activation of the liquid energy absorber member.

Abstract: An engine mounting structure characterized in that a shock and vibration insulating unit and a vibration cancelling device are provided operatively in parallel with each other between the body structure of an automotive vehicle and the engine mounted on the vehicle body structure, wherein the vibration cancelling device comprises at least one rigid elongated bar having one end portion pivotally engaged by the body structure of the engine and a longitudinally intermediate portion pivotally engaged by the vehicle body structure, and a mass or counterweight member carried by another end portion of the elongated bar whereby the vibrations to be transferred through the shock and vibration insulating unit are at least partially cancelled by the vibrations to be transferred through the vibration cancelling device.

Abstract: A multidirectional thrust-vectoring device for a nozzle, including a fixed and pivoting part. The device includes elastic elements constituting a flexible articulation. The elastic elements form two elastic planes, the first of which is fixed on the fixed part and the second on the pivoting part. The elements are assembled in twos by means of a connecting plate and are distributed in two sets of two elements each on the periphery of the nozzle. Jacks associated with each two-set group allow the nozzle to be turned in the direction desired.

Abstract: A device for suspending plumbing components such as a pipe elbow or a high ear 90 elbow between the studs of a wall and retarding propagation of sound between the plumbing components and the wall has a main body or housing formed of a semi-resilient material which is incapable of transmitting a sound from a first location in this body to a second location also in the body. A first member which attaches to the wall or a strip of plumbers tape extending between the studs is attached to the body at the first location. A second member which attaches to the plumbing components is attached to the body at the second location. The first and second members are connected to the body at their respective locations such that a parallel portion of the first member is parallel with, but is not coplanar with, a parallel portion of the second member.

Abstract: This invention relates to an apparatus for absorption of mechanical energy, particularly energy of very strong shocks. It comprises an immobile cylinder and, inserted in it in telescopic fashion, a mobile part consisting of at least one mobile cylinder with a bottom and a mobile plunger inserted into the last cylinder, the empty space between the cylinders and between the last cylinder and the plunger being filled with a medium absorbing energy of shocks and vibrations and being characterized by viscous flow in static state and by high elasticity in dynamic state. Any of the mobile cylinders is provided with a plunger and a baffle dividing the cylinder into two chambers, one chamber being filled with a visco-elastic medium absorbing mechanical energy, and the other chamber being filled with a visco-elastic medium compressed to a pressure higher than 1000 h Pa.

Abstract: A tension spring capable of large elastic deformation and having a high resistance to breakage and particularly, but not exclusively, for use as an artificial prosthetic ligament. The spring comprises an elongate elastic core having a low modulus of elasticity and defining opposed ends. A tensionable wrapping of thread having a high resistance to breakage is disposed in contact about the core to compress the core and to cause it to elongate axially upon opposite relative axial displacement of opposed ends of the wrapping secured to traction means.

Abstract: An energy absorbing element such as a spring, shock absorber or vibration damper in the form of a laminated structure comprising at least one rigid non-elastomeric layer such as a reinforced plastic material bonded to a visco-elastic layer such as a vulcanizable elastomer in which twisted fiber bundles are embedded in the visco-elastic layer. Preferably the twisted fiber bundle comprises a steel cord having an elongation at rupture between 1.5 and 8%. An anchoring layer between the visco-elastic layer and the non-elastomeric layer may be employed.

Abstract: A boat mooring device comprising a base to be anchored to a dock or a platform on a yacht and including an upstanding coil spring having a bendable elbow zone and being connected to an extendible telescopic arm with a hook on the distal end to connect to a boat.

Abstract: A column which includes an elongated guide tube receiving a pneumatic spring of the piston-and-cylinder type in its bore. A bar is fixedly fastened to the piston rod member or the cylinder member of the spring in longitudinal alignment and extends in the guide tube bore from the associated spring member toward one of the two longitudinally terminal parts of the guide tube. A spring assembly extending about the bar is interposed between spring seats on the pneumatic spring member fixedly fastened to the bar and the one terminal part of the guide tube. Cooperating abutments on the bar and on the one terminal part of the guide tube limit movement of the bar toward the other longitudinally terminal part of the guide tube.

Abstract: A shock absorber comprising telescopically inserted cylinders, the empty space between them being filled with a medium of appropriately selected rheological properties of increasing viscosity, decreasing elasticity and one of which being filled with a media having viscous characteristics under static conditions and elastic characteristics under dynamic conditions.

Abstract: A hydraulic shock absorber for use on vehicles which includes a rubber attachment on the upper end thereof which is supported on the vehicle. A cap sealingly covers the rubber attachment to provide a sealed chamber communicating with oil in the cylinder of the shock absorber. A partition provided with a communicating hole is disposed in the chamber. A flexible membrane is disposed above the partition in the chamber and divides the chamber into sealed compartments. One of the sealed compartments is filled with pressurized gas, and the other sealed compartment is held in communication with the interior of the shock absorber. The arrangement of the invention provides a shock absorber with an improved secondary performance in dampening forces between the shock absorber and the body of the vehicle.

Abstract: A flexible spherical bearing, comprising two end pieces connected by a stack of interconnected alternate layers of a flexible material, such as elastomer, and of a strong material, such as metallic material and at least one cavity filled with an incompressible fluid and extending between the two end pieces without the interposition of elastomer. Such a bearing is used for connecting a helicopter rotor blade to the rotor hub of this helicopter.

Abstract: A shock absorber, e.g. for a motor vehicle, comprising a piston which is mobile in a cylinder and, at both sides of the piston, at least one shock absorbing body. The shock absorbing bodies are open at the topside and at the underside, and have the shape of an elliptic or polygonal section. The upper surface has a smaller section than the lower surface. Between the shock absorbing bodies circular metal discs with a central bore are provided. Each disc possesses an erect edge in which the big lower part of a shock absorbing body is enclosed sealingly on the metal disc. The space limited by the cylinder and the shock absorbing bodies with the metal discs is filled with a viscous liquid. Circumferential passageways for the liquid are present between the edges of the metal discs and the cylinder.

Abstract: In the illustrated embodiments, an elastomer body has a relatively thin metal layer overlying the elastomer surface to be loaded so as to prevent adhesion at the elastomer surface in spite of a long period of dwell in contact with a relatively more rigid cooperating part such as a hard rubber stop. In a basic form, a thin metal sleeve may encircle a cylindrical elastomer body. The outer surface of the sleeve may be grooved for extra adhesion resistance. In a further development, the sleeve is formed as a helical wire spring which may be confined between two flanges integral with the elastomer body.

Abstract: The invention is concerned with an absorbing spring involving the hydrostatic compression of an elastomer, comprising a tight casing constituted by a deformable, bent elastic tube of flattened section, filled with elastomer. A central core is embedded in the elastomer, the core being made of elastic material, the coefficient of heat expansion of which is lower than that of the tube. The invention finds particular application in the manufacture of absorbing devices.

Abstract: A rubber elastic engine mount with hydraulic damping, especially for motor vehicles, includes an elastic peripheral wall on the engine side joined with a metallic end wall that can be connected with an engine casing, and joined also with a metallic supporting element that can be connected to an engine supporting frame. The elastic wall together with the end walls forms a liquid-filled main chamber which is closed off by a partition connected with the supporting element, and which is connected with an auxiliary liquid-filled elastic walled chamber on the other side of the partition. The auxiliary chamber may be constructed generally the same as the main chamber, including an elastic peripheral wall joined with the supporting element and with a metallic end wall relatively away from the engine. The two end walls are rigidly connected. The peripheral walls function as thrust springs. The partition may be rigid and stationary, or it may be movable.

Abstract: A support element comprising a first resilient housing means, a second rigid housing means and means including choke means for connecting the interiors of the first and second housing means. In accordance with the invention, the interior of the first housing means is completely filled with silicone rubber and the interior of the second housing means is filled partially with such rubber and partially with a compressible medium. In further accord with the invention, the first housing means exhibits elasticity in an action direction and otherwise volume stiffness with respect to increases in internal pressure, while the second housing means exhibits volume stiffness with respect to increases in internal pressure.

Abstract: A stress damper comprising a hydraulic accumulator having an expansible cavity filled with hydraulic fluid, a body of elastomer provided with at least one internal cavity filled with hydraulic fluid, and an intermediate element of elastomer provided between the accumulator and the elastomer body, having at least one duct providing communication between the cavities in the accumulator and the elastomer body and arranged so that a compressive stress applied to the accumulator will cause a reduction in the cross-section of the duct.

Abstract: Shock absorber effectively absorbs shock to bumper of automobile by compressive deformation of cushion, regardless of direction from which shock comes. Shock absorber comprises hollow tubular cushion placed within cylinder having one end closed. Plunger fits within open end of cylinder to compress and deform hollow tubular cushion. Shock applied to plunger is mitigated by resistance provided by hollow tubular cushion. Particular structure between cylinder and plunger inhibits sudden return of plunger to original position while providing little resistance on downstroke of plunger.

Abstract: A laminated bearing comprises a plurality of alternating and bonded together annular layers of elastomeric material and non-extensible material. The layers alternate along a common axis extending lengthwise of the bearing so that the bearing can support substantial compressive loads applied generally normal to the layers. The layers include at least one elastomeric layer which, if formed to have a nominally constant modulus of elasticity throughout and if subjected to a compressive load, would experience a shear strain adjacent one of its inner and outer circumferences greater than the shear strain adjacent the other circumference. Such a difference in compression-induced shear strains would tend to cause uneven wearing of and a reduced service life for the elastomeric layer in question and for the bearing as a whole. To avoid or minimize uneven wear, the elastomeric layer is formed to have at least two different moduli of elasticity.

Abstract: A shock absorbing element, suitable for use in a railroad draft gear, as well as a resilient polyureaurethane composition therefor, said element characterized by a compressive cycling test as well as preferably a cold temperature compression test, where said polyureaurethane is prepared by reacting a complex of 4,4'-methylene dianiline and a salt with the reaction product of selected diisocyanates and manipulatively selected polymeric polyols. An assembly of such shock absorbing elements is also disclosed under compression in a cylinder suitable as a railroad shock absorbing draft gear.

Abstract: A spherical plug valve has an annular seat pocket in its body around a flow passageway. A seat ring is positioned in the seat pocket and includes inner and outer annular concentric seat members with a resilient seal ring secured between the concentric seat members. The concentric seat members are secured together by rivets after the seal ring is positioned therebetween. A separate resilient seat urging member in the seat pocket behind the seat ring urges the seal into engagement with the adjacent face of the spherical valve and includes a metal spring encapsulated in an elastomeric material.

Abstract: A biasing element has a force transmitting material positioned within a chamber of a housing having deflectable walls. A piston contacts and moves the force transmitting material into forcible contact with the housing walls in response to movement of the piston. Further movement of the piston deflects the housing walls in response to forces from the force transmitting material in the housing.

Abstract: A rotary sliding vane compressor having means for biasing the vanes outwardly. Such means include a resilient element of improved design located in the lower portion of the vane slot and engaging a convexly shaped edge on the vane. The flexing action of the resilient member ensures that the vanes will be moved outwardly during the expansion phase of rotor travel.

Abstract: A rotary sliding vane compressor having means for biasing the vanes outwardly. Such means include a resilient element located in the lower portion of the vane slot and engaging a convexly shaped edge on the vane. An improved wear surface on the resilient element at the area of contact with the vane slot provides enhanced service life. The flexing action of the resilient member ensures that the vanes will be moved outwardly during the expansion phase of rotor travel.

Abstract: A self-positioning shock and vibration isolating suspension system is disclosed which incorporates one or more pneumatic mounts for supporting a load on a base. Each pneumatic mount comprises a hollow elastomer body with a diaphragm at each end, means for connecting one diaphragm to a base and the other to the load, means for pressurizing the elastomer body with a fluid so that the diaphragms and the fluid acting thereon form a pneumatic spring having a spring stiffness less than that of the hollow body, and means for varying the fluid pressure within the elastomer body in accordance with changes in the magnitude of the load.

Abstract: A shock absorber having alternate layers of a viscoelastic material and thin leaf springs disposed between, and having each end mounted on a pair of parallel side members which are disposed to undergo translative movement when the shock absorber is forced into either a compressed or an extended position. The layers of viscoelastic material and leaf springs are loaded as fixed end beams in the compressed and extended position, and return to the neutral position because of the spring constant in the leaf springs when a load is removed.

Abstract: A rotary sliding vane compressor having means for biasing the vanes outwardly. Such means include a resilient element located in the lower portion of the vane slot and engaging a convexly shaped edge on the vane. The flexing action of the resilient member insures that the vanes will be moved outwardly during the expansion phase of rotor travel.

Abstract: Damping member for absorbing mechanical oscillations and impacts applied in a given direction, comprising a chamber having supporting surfaces at opposite sides thereof, the chamber being formed with walls extending in the given direction and being at least partly elastic, and damping medium received in the chamber and being formed of a tough elastic, lastingly plastic mass.

Abstract: A compliant bearing of the fixed or movable type for supporting heavy loads in compression, as advantageously used for coupling piers and scaffolds of a bridge or viaduct, has been developed using multiple layers of polychloroprene and fluorocarbon resin. A steel base plate provided with a recessed seat contains in ascending order: a first sheet of a fluorocarbon resin having a low coefficient of sliding friction, a thick layer of pressed polychloroprene having on its upper part a peripheral seat wherein at least one peripheral weather strip is arranged, and a second sheet of fluorocarbon resin also having a low coefficient of sliding friction, and an upper steel plate located upon the second sheet of fluorocarbon resin. Fixed, unidirectional, and multidirectional horizontal displacement configurations are described.

Abstract: A modular cushioning pad comprises a rigid plate and at least one elastomeric cushion centered on the plate. One end surface of the cushion is bonded to the plate, while the second, opposite end surface is spaced from the plate. The outer side surface of the cushion has a first portion that slopes outwardly and away from the end of the cushion bonded to the plate. A second portion of the outer side surface slopes inwardly and away from the first portion of the surface to merge with the second end surface of the cushion. The plate and cushion are preferably annular.

Abstract: Energy storage device characterized in that energy storing body formed of hollow cone of polyurethane is provided between pair of guide members in form of inverted hollow cones. These assemblies are serially arranged one upon another and held in cylinder body under piston pressure. Compressive force developed between pair of guide members deforms energy storing cone and restoring force of body is taken out as hydraulic power.

Abstract: An energy absorber which comprises in cross-section at least one limb of rubber-plastic composite material comprising a layer of rubber and a layer of plastics, said layers being united together and each extending substantially in the direction of the length of the limb, and the layer of plastics material being capable of absorbing more energy than the layer of rubber during deformation of the limb by bending or buckling.

Abstract: A noise-preventing shock absorber adapted to suppress noise and absorb shock created by moving objects such as moving machine parts engaging mating surfaces and decelerating to zero velocity within a short stroke or travel distance. The shock absorber includes a unitary resilient member which is annularly shaped in plan view and provided with an axial opening, with the peripheral surface of the axial opening comprising an inner force-transmitting surface that is formed with a wavelike configuration in vertical cross section. An upper force-receiving shaft is disposed in the resilient member axial opening and has an exterior peripheral surface which is provided with a wavelike configuration in vertical cross section that mates with and is bonded to the wavelike inner force-transmitting surface of the resilient member.

Abstract: A protector for the bottom edge of a refuse can comprising a band of elastomer material formed into an annulus which is sleeved over the bottom chime of a refuse can. The band is molded about a steel coil spring which forms an annular passage within the band. The passage communicates with partially closed radial ports formed band. The spring is adapted to underlie the chime and by the coils of the spring deflecting axially serves as a shock absorbing means when the container is dropped. Also, air is compressed within the passage and spurts through the leaky ports. This augments the action of the spring and absorbs the rim crushing blows.

Abstract: A spring element comprises an insert formed of a rigid metallic core having four outwardly directed faces each bonded to a respective side of a respective elastomeric body whose other side is bonded to a respective metallic plate. The insert so formed is compressed and fits in a throughgoing central passage in a rigid metallic casing with each of the metal plates pressing against a respective inwardly directed face of the casing. The insert is symmetrical about a vertical plane and the angle between the upper two bodies can be larger than the angle between the lower two bodies. In addition the metal plates of the upper two bodies may be integrally formed of a single metal strip also constituting a part of the casing and the lower bodies carry metal plates which lie within a seat which can be formed in a motor-vehicle frame element for a very compact assembly.

Abstract: A helicopter having a lift unit including a multiblade helicopter main rotor system and a nodalized module including a beam driven in response to blade developed vertical forces has a fuselage unit connected to the beam only at vibration nodal points along the beam. The coupling between the lift unit and the fuselage comprises two rigid arms which form the beam and which extend toward one another from the nodal points. A multilayered flexible beam section interconnects the arms to accommodate beam bending in the flexible section. A rigid member is attached to each of the arms at drive points intermediate the nodal points in supporting relation from the lift unit.

Abstract: A flexible bearing is constructed of layers of elastomer and rigid material, alternately stacked and bonded together. The central portion of each elastomeric layer, however, is an elastomeric material having a lower elastic shear modulus than that of the edge portions. This lowers the resistance of the bearing to forces exerted on it in directions parallel to the layers of elastomer and rigid material.

Abstract: An improved elastomeric bearing structure adapted for use to support members such as beams or decks upon piers, foundations, sills, etc., to accommodate static and dynamic loading, thermal movement, non-parallel surfaces or rotation caused by beam deflection and the like. Bearing structure includes a monolithic elastomeric member which defines two substantially parallel side surfaces bounded at their peripheries by a curvilinear edge surface; the elastomeric member is confined at its edge surface by a plurality of elongated inextensible tension members disposed in both vertically spaced apart relation and horizontally offset or staggered relation and of selected accumulative height to allow selected adjacent areas of the edge surface to remain unconfined. Such structure permits a substantial increase in horizontal shear deflection for a bearing of specified thickness while also permitting superior accommodation to rotation caused by beam deflection and limiting deflection caused by vertical loading.

Abstract: A compressive load carrying laminated bearing comprising alternating bonded layers of a resilient material and a non-extensible material generally concentrically disposed about a common center with successive layers being disposed at successively increasing radii. The fatigue life thereof, when subjected to cylic rotational or torsional motion about the common center, is substantially enhanced by progressively increasing the thickness of the layers of resilient material with increasing radii while simultaneously progressively decreasing the modulus of elasticity of the layers of resilient material with increasing radii. .Iadd.