RESILIENT SHOCK OR VIBRATION ABSORBER

A mounting arrangement comprises a pair of opposed cone surfaces supported on a common axis of a first part of said arrangement, each of said cone surfaces being provided with resilient means for supporting therebetween a second part of said arrangement which is provided with opposed cone shaped depressions...     

In an elevator including weight-compensating ropes having their respective one end connected to the lower end of a car and the other end thereof connected to the lower end of a counterweight, an oscillation-absorbing device is provided closely adjacent to at least one of a first connecting portion of...     

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...     

A snubber for interpositioning between a substantially vertical surface on a transporting vehicle and an end member of a transported vehicle carried by the transporting vehicle comprises two elements, viz,: a first element for being secured to said substantially vertical surface on the transporting vehicle,...     

A linear spring system using pneumatic cylinders arranged to give a substantially linear force versus displacement curve across a wide range of displacement and which is capable of providing large forces with mechanism.

The disclosure is directed to a dynamic absorber with pneumatic springs, which absorber is adapted for absorbing a vibration of a machine caused by an excitation force generated in the machine. The dynamic absorber comprises a pair of pneumatic springs disposed to be spaced apart from one another along...     

An adjustable-effectiveness support spring device for vibration-isolating support of an airborne load subject to varying g forces in both positive and negative directions. A vertically movable load support rod is interconnected for support by a mounting base through the medium of a low pickup value helical...     

A dynamic damper device includes a damping rod traversing several parallel hoisting ropes for an elevator car adjacent to the car and projecting beyond the outermost ropes. All the ropes are fixed to the damping rod by means of two opposite push plates, and fastening bolts. The rod has one of the projecting...     

Impact energy absorbing pipe restraints are provided which include a laminated strap for surrounding at least a portion of the circumference of a high energy pipe to restrain the movement of the high energy pipe in at least one direction during rupture. The laminated strap is formed of a ductile material,...     

A regenerator assembly for a gas turbine engine includes a center driven rotatable matrix with a hub and drive shaft including a sprocket fixedly secured thereto with a roller chain driven thereacross by means of a cross shaft assembly including a first elongated tubular coupling telescoped with respect...     

Impact energy absorbing pipe restraints are provided which include a laminated strap for surrounding at least a portion of the circumference of a high energy pipe to restrain the movement of the high energy pipe in at least one direction during rupture. The laminated strap is formed of a ductile material,...     

Impact energy absorbing pipe restraints are provided which include a laminated strap for surrounding at least a portion of the circumference of a high energy pipe to restrain the movement of the high energy pipe in at least one direction during rupture. The laminated strap is formed of a ductile material,...     

The shock absorber is designed to be horizontally mounted on a vehicle and incorporates a weight responsive to acceleration and deceleration forces developed by the vehicle itself. The arrangement is such that the weight will decrease the damping hydraulic fluid resistance under accelerating conditions...     

A vibration damper for cables utilizing the frictional properties of a close-wound spiral spring, that is, a spring wound in spiral form from a flat strip and having contacting faces. Vibrational energy is dissipated in the spiral spring by the lateral motion of the turns of the spring relative to one...     

A regenerator assembly for a gas turbine engine includes a center driven, rotatable disc type ceramic core with a hub and drive shaft including a chain driven sprocket fixedly secured thereto and wherein damper means including first and second relatively movable parts are connected between the sprocket...     

A recoil-counter-recoil energy absorber unit including an outer housing for guiding a recoiling mass, an hydraulic energy absorber unit mounted between a portion of the housing and the mass, a recoil spring mounted between the energy absorber unit and the housing, a second housing mounting the hydraulic...     

A feature of this invention is a positively assembled, double acting spring buffer having all spring guides disposed within and extending the full length of the spring assembly.

A tuned spring-mass vibration absorber in which a dynamic mass is suspended from a vibrating support member, such as a helicopter fuselage, by a plurality of cantilevered leaf springs integrally connected to the dynamic mass at selected stations so that the mass CG and the spring center of force are...     

Pipeline restraining device including a loop-shaped holding member surrounding a pipe of the pipeline and being of such dimensions as to be plastically deformed under the action of the force with which the pipe is held, which includes a further holding member disposed substantially parallel to the direction...     

An energy absorbing motor mount assembly is disclosed in which a mounting element, including an arm having an enlarged head portion, is mounted for reciprocation in fore and aft directions inside a containment housing. Resiliently displaceable energy absorbing means are positioned on either side of the...     

A shock absorber having controlled, continuous, adjustable resistance in both directions is obtained by means of a slide piston passing through a fixed collar and through two movable collars and elastic compression means abutting each movable collar.

A bidirectional force limiter for limiting the magnitude of a force applied along a line of action to a predetermined magnitude includes a slide assembly supported for reciprocating movement along its longitudinal axis by the spaced guide plates of a support structure. A yieldable force-bias element,...     

There is disclosed a hand-held label printing and applying apparatus having an impression control mechanism. The apparatus includes a pair of relatively movable slides. A first slide is driven in response to movement of a manually operable actuator and a second slide which carries the print head is slidably...     

A resilient element shock absorber having a casing and a movable rod extending into a bore in the casing. Two bushings are slidably disposed in the bore, and a resilient structure is disposed between the bushings. Upon displacement of the rod in either direction from its neutral position, one of the...     

Electronic modules are protected from damage which might be caused by ambt vibrations and shock. Openings in the cabinet are sized to accommodate the electronic modules and snubbers are interposed between the modules and the walls of the cabinets to hold them securely in place. A pair of Belleville springs...     

A shock absorption thrust mechanism includes a thrust piece (19) which is used as a stop for a moving body in motion. This thrust piece 19 is prone to displacement under the effect of kinetic energy of the moving body, against the action of a spring (20) and a shock absorber (21). The displacement of...     

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...     

A shock absorber is disclosed having an outer cylinder closed at one end thereof, a hollow inner cylinder closed at one end and opened at an another end thereof, the open end being inserted in the outer cylinder, a guide member for guiding the inner cylinder slidably in the outer cylinder, a member for...     

A system for resiliently supporting a load at a reference height includes a hydraulic cylinder for resiliently supporting a load about a reference height and an accumulator which cooperates with the cylinder for flowing hydraulic fluid therebetween in response to varying loads imposed on the cylinder....     

A support device for supporting a supported structure above a supporting structure, in which a ball (2) is rotatably held at the top of a first component (A) disposed on the side of either one of the supporting structure and the supported structure, and a second component (B) is so supported that this...     

For improved vibration damping are used preferably a plurality of parallel bodies (30) of generally thread-like configuration which are embedded in a layer of adherent viscoelastic material (29) applied to a vibrating structure or to a body (24) which in turn rests against a vibrating structure (22).

An assembly for adaptively controlling vibration, shock, acceleration and position of an item mounted to the assembly independent of varying operating characteristics of the item or a support base for the assembly is provided. The assembly comprises an item to be controlled, a support platform for supporting...     

A dynamic linear vibration damper consisting of a support member and an inertia member assembled by an elastomer for vibration damping purposes. An extension defined on the support member is received within an opening in the inertia member, and an elastomer interposed between the extension and the opening...     

Loose fill packing material comprising a plurality of expanded, resilient, thermoplastic dunnage particles, which particles are rendered more effective by coating an outer surface thereof with an additive which additive results in the packing material having improved cushioning properties and reduces...     

A liquid spring unit operable in both tension and compression includes a liquid spring having a cylinder, a piston, a seal between the cylinder and piston, and compressible liquid in the cylinder. A cylinder extension has diametrically opposed slots therein. A sleeve slidably mounts the cylinder and...     

There is provided a shock absorber for containers for the transportation and/or storage of radioactive materials consisting of one or more radially or axially arranged chambers which are filled with shock absorbing material characterized by the shock absorber containing cup spring shaped sheets having...     

A liquid spring unit operable in both tension and compression including a cylinder, compressible liquid in the cylinder, a piston and a seal for the piston, a first sleeve mounted for telescopic movement with respect to the cylinder, a collapsible housing consisting of a second sleeve mounted about the...     

A rough terrain vehicle comprises a vehicle chassis, wheel assemblies enabling vertical and angular deflection of the chassis relative to the terrain during vehicle movement, a telescopic crane boom pivotally mounted on the chassis and capable of limited reciprocable angular deflection relative to the...     

The invention provides a manually held leash, lead, line or the like for large and strong animals which incorporates a shock absorbing device for diminishing the effect of the force or strain transmitted when the animal suddenly and forcibly pulls, lunges, bolts, jumps, etc. The shock absorber incorporated...     

A mount for connecting two relative-vibratable objects has two resilient elements and a signal actuated clutch for connecting the objects. The clutch is in parallel with one of the resilient elements and in parallel with the other. A sensor senses the vibrations applied across the mount and actuates...     

A variable frequency vibration isolator for isolating vibrations between a base and a load having relative displacement of each other characterized by a pair of coil springs in series with a connector between them. The connector is journally mounted for axial movement in response to spring vibrations....     

An anti-impact safety apparatus for a robot includes a buffer mechanism disposed between a swivel arm and a working arm of the robot. The buffer mechanism incorporates a converting mechanism which converts an electrical signal into a gas or liquid pressure. When an impact load, such as an axial load,...     

Disclosed herein is an improved engine mount which comprises first and second retaining members which are separated from each other, a first shock absorbing elastomer block disposed between the first and second retaining members, a highly magnetic member connected to the first retaining member to move...     

An active vibration stabilizer and isolator for removing vibration between a fixed support and a payload. The vibration stabilizer and isolator adaptable for use with large and heavy payloads or closed cycle applications where a hard or uncompressible stabilizer and isolator is required to isolate vibrations...     

An elastic engine mount with a dynamic stiffness decreasing in dependence on frequency for damping sound transmitted through solids includes a leaf spring having a central region and ends, an elastomer support disposed on the central region of the leaf spring for transmitting force to the leaf spring...     

The instant invention is an apparatus for introducing resilient forces into a line when the line is tensioned. The apparatus comprises a housing to form and maintain a section of line into a loop or bight portion lying generally in planes substantially parallel to the line portions exterior of the housing...     

A vibration damping and isolation apparatus wherein in damping is obtained by purely viscous fluid shear forces. The fluid is sealed in two chambers divided by a orifice to permit fluid flow. Chamber containment of the fluid and chamber volume change is provided by metal bellows which are arranged to...     

A vibration absorber is provided having a pendulum (12) mounted on a body (21) for oscillation about an axis (13). A pair of resilient members (14, 15) are mounted on the body (21) in contact with the pendulum (12) in preloaded opposed relation with respect to oscillation of the pendulum (12) about the...     

A non-linear torque produced by an offset mass rotating on a shaft is balanced over 360.degree. of revolution by a lever arm mounted to the shaft extending in a direction opposite that of the offset mass and a spring means for generating a constant force in the direction of gravity at the opposite end...     

An active force actuated vibration isolation system uses a velocity sensor in the form of a velocity-sensitive geophone to sense payload velocity and modifies the geophone signal to control the force applied to oppose the vibration. The modified signal effectively reduces the inherent resonant frequency...     

Concentric rings, tubes or sleeves are separated by radial corrugated sheets or wires in radially aligned grooves for attenuating shocks and vibrations.

Large space structures are generally constructed of very stiff beams with little structural damping. Periodic activities such as instrument pointing can cause small beam deformations which can accumulate over time in the frequency vicinity of structural resonances. The beam vibration damping system is...     

An inertia damper having a mounting base to be mounted on a rotary shaft and an inertia weight component which is coupled to the mounting base through a vibration absorbing layer, the vibration absorbing layer being made of a gel material with a penetration valve of approximately 50 to 200. The inertia...     

A voice-coil linear actuator is embodied wherein the coil-driving structure is coupled to the driven structure (carriage) via a visco-elastic couple member (e.g., elastomeric bonding tape) that changes from an efficient motion-transmitter, at "operating" coil-generated vibration frequencies, to a poor...     

A rate controllable damping mechanism is disclosed. The mechanism includes a chamber disposed within a housing; an element mounted for movement within the chamber; a damping material, preferably a low melting temperature metal alloy, in the chamber for preventing the movement of the element at a first...     

A dual mode vibration isolator for reducing transmission of vibrations between a forward body and an aft body includes a mounting member positioned between the forward and aft bodies, a plurality of magnetic actuators each having an armature fixed to the forward body and a stator mounted on the mounting...     

A vehicle engine suspension system in which, in order to reduce `shake` electrically actuated engine mounts are provided, power being supplied to the engine mounts by a control system responsive to vehicle body accelerations (e.g. in the vertical direction). The arrangement is such that when a tendency...     

A cushioning and protecting member for cushioning and protecting articles packed in a case is provided that includes a plurality of cushions having a variety of shapes and which can be compressed by pressure. The protecting member further includes a supporting plate which attachably or detachably supports...     

A vibration isolator comprises a helical spring support between a base 3 and a cap 8 from which depends a pendulum rod 14 carrying at its lower end a ball joint 16. A pneumatic damper in the form of a piston 24 forms a gas compression chamber with the cap 8. A friction disc 22 encircles the pendulum...     

An elasto-plastic damper is adapted to be used in a structure, such as a building and other facilities, for absorbing vibration energy created by earthquake tremors and other ground vibrations. The damper is a centrally bulged and generally cone-shaped hollow body of revolution so that its section modulus...     

Controllable electrorheological fluid composite structure elements incorporate electrorheological fluids as a structural component between opposing fluid containment layers to form at least a portion of any variety of extended mechanical systems such as plates, panels, beams and bars or structures including...     

An oscillating apparatus comprises a cylinder, a piston reciprocatingly movably fitted in the cylinder, shaft members connected to the piston and extending out of the cylinder. The cylinder, piston and shaft members form an oscillator. An inlet and an outlet for an electro-rheological fluid are provided...     

An equipment housing assembly includes: an equipment housing (11); a rack (13) for supporting the housing (11); and two spaced hold-down devices (17a, 17b) each comprising two co-operating separable parts (19a, 19b) secured respectively to the rear (21) of the housing (11) and the rack (13). The two...     

A method and apparatus for cancelling vibrations caused by periodic pulsating forces acting on a rotating shaft which are synchronous with the shaft rotation. An adaptive algorithm is implemented which utilizes the sensed velocity or acceleration of the difference between the pulsting forces acting on...     

A shock absorbing bat comprises a long cylindrical central handle and a main body, both being connected together and held firmly by means of a retaining collar and an elastic ring. An elastic connector is provided which is axially attached to an end piece. This construction can drastically reduce the...     

A seismic isolator for absorbing earthquake vibrations is provided which comprises a laminated member arranged to be interposed between a structure and a foundation, the laminated member comprising thin steel sheets having concavities and convexities extending in a single direction, flexible sheets stacked...     

A suspension of a vehicle seat comprises a bearing plate to which the vehicle seat is secured, a first base mounted on the floor of the vehicle cabin, and mechanical resilient elements provided between the first base and bearing plate. Arranged vertically in line with the axis of symmetry of the first...     

A shaker assembly for reducing vibrations in a vibrating structure includes an eccentric mass which is driven at a selected frequency and which drives a shaker assembly. The resonant frequency of the shaker assembly is controlled by a pair of pneumatic springs so as to reduce the vibrations of the vibrating...     

A damping support structure for preventing vibrations of an apparatus table supporting an apparatus for manufacturing ultra-high precision devices such as semiconductors and printed circuit boards. The apparatus table is supported by a support deck suspended to be horizontally displaceable. Linear motors...     

A gas-operated spring for the mutual support of two oscillating elements moving relative to one another, for which sensor-controlled (9, 10) first and second devices (1, 2) are provided, which bring about the blowing out of excess compressed gas from the gas-operated spring or the feeding in of additional...     

A vibration isolation arrangement, for example for supporting a stretcher in an ambulance, comprises a lever (16) which extends between a base structure (6) and a support frame (4). The lever (16) can pivot about a fulcrum (30) and is acted upon by a spring (28). The fulcrum (30) is displaceable by an...     

A mounting arrangement that is particularly well-suited for use in environments wherein extremely high loads are encountered. Particularly, a motor mount for use with water craft is disclosed. The mounting arrangement comprises a base plate, and a resilient member is affixed to the base plate. The resilient...     

The invention concerns controls for a semiactive chassis on a motor vehicle that is provided with variable or power-regulated vibration attenuators. The results of various sensor measurements are supplied to a regulator that controls the settings in the vibration attenuators on the sky-hook principle.

A damping support structure for preventing vibrations of an apparatus table supporting an apparatus for manufacturing ultra-high precision devices such as semiconductors and printed circuit boards. The apparatus table is supported in suspension by support members, with its apparatus mounting surface...     

The total periodically induced vibratory disturbance in a structure having unique structural characteristics is minimized. Actuators are operated in response to complex input signals to produce counteractive forces in the structure. Sensors responsive to the vibrational disturbance and the counteractive...     

A hydraulic vibration buffer for connection between two members with a case coupled with the first member, a piston rod with its top end coupled with a second member, a piston coupled with a base end of the piston rod and housed within the cylinder case so as to divide the cylinder case into first and...     

A vibration mount by which a subject body (10) is mounted on a support (12) by means of an intermediate body (16), and constrictive actuators (22, 24) each of whose dimensions can be changed in a controllable manner by signals supplied from a computer receiving information from sensors on the intermediate...     

A noise abating automotive brake shoe assembly consisting essentially of a mixture of from about 2 to about 30 percent by weight of a discrete, heat-cured, particulate, elastomeric, sound damping material containing cashew nut shell resin, nitrile rubber, resin binder, a fiber selected from a group consisting...     

A load support vibration isolation mount comprises first and second parts movable relative to one another with a gas cushion and a high pressure hydraulic fluid disposed in series between the parts to attenuate vibration induced force transfer between the parts. At least one porous elastic member and...     

The present invention relates to a fail safe resilient mount which includes an outer dome shaped member having an aperture centered about an apex thereof and oppositely diposed ears extending therefrom, an inner bell shaped member axially offset from said outer member having a centered aperture at a...     

A wiper system for motor vehicles is described in which a pivot-shaft assembly is fixed to the one end of a pipe-like carrier held by way of its other end on a stud of a motor carrier member stable in form. Wiper systems of this kind can also be produced at low costs for motor vehicles in which the assembly...     

A variable shock absorbing compressional mounting apparatus. The apparatus includes a housing assembly having first and second housing portions, with the second housing portion being operable to move slidably partially inwardly and outwardly relative to the first housing portion, and a cylindrical, elongated...     

Vibration damper for damping vibrations in a surface (20) of an object (21). The damper consists of an oscillating body (1) which is movably connected to the surface such that it is brought to oscillate so that the oscillating body transmits forces to the object which are principally oppositely directed...     

An active vibration isolation system which has three groups of airbag springs for supporting a load and isolating the load from vibration, together with a servo-valve system for admitting pressurized air to or exhausting pressurized air from each group of the airbag springs, and a damping system for...     

An air spring has pair of spaced end members for mounting the spring at spaced locations on a structure. A flexible sleeve of elastomeric material is sealingly engaged with the end members and forms a pressurized fluid chamber therebetween. A post is mounted on one of the end members and extends into...     

The digging apparatus support boom of a continuous excavating machine is vibrated in a directional mode so as to enhance digging efficiency. Directionally compliant mounting of the boom isolates this vibration from the machine proper while allowing unimpaired application of digging torque and crowd forces.

An engine is attached to a vehicle frame with at least one synthetic engine mount strut mounted generally axially in the principal directions of displacement resulting from engine torque. The strut provides isolation of noise and vibration from the engine and drive train, and reduces engine rotation...     

A method of and a system for active vibration control of an extended mechanical structure having a point or region at which unwanted vibrations are to be reduced or suppressed, wherein a plurality of uni-axial inertial actuators (4, 5) are disposed to act on a rigid intermediate part such as a flange...     

A viscous damper for absorbing vibrations of low amplitude over a wide frequency range. Two working volumes of resiliently deformable material, in the form of a bellows, are provided in a folded structure joined by a base carrying a restrictive annular fluid passage. Compressive forces applied to the...     

A composite structure of elastic and viscoelastic components in which dynamic loads are effectively damped by transmission through the viscoelastic components. The structure includes a continuous sandwich comprised either of a single elastic layer enclosed by two viscoelastic layers or of a single viscoelastic...     

A vibration damper comprising a magnet having a mass m and an elasticity c.sub.1, and a spring element of flexibly compliant material having an elasticity c.sub.2, wherein the magnet is mounted on the spring element so that the resiliency c.sub.1 of the magnet and the resiliency c.sub.2 of the spring...     

A self-expanding mount controls transmission of vibration of a vibration source to a base. A main liquid chamber is defined between a resilient member fixed to the vibration source or the base and a casing fixed to the base or the vibration source. A metallic bellows is driven in response to a first...     

Helical isolator (I.sup.1, I.sup.2) in a turnbuckle frame (10) on a central rod (2) with connector rods (34, 36) of opposite handed threads, are for mounting between a pipe and an adjacent structure. The wire energy absorbing rope bights (32) of the isolator I.sup.1, I.sup.2 are placed in parallel planes...     

A plurality of eccentric rotors are rotatably fitted between a fixed base and an output shaft on which an object to be vibrationproofed is mounted, the output shaft being supported movably in 3 to 6 Degree-of-Freedom, magnet spring mechanisms are provided on fitted wall surfaces between the fixed base...     

A damping apparatus for large structures operable both passively and actively is disclosed which comprises a passive type damping mechanism to be mounted on the structure and including an added mass, spring, dampener, etc., hydraulic cylinders mounted on the structure and connected to the added mass,...     

The present invention discloses an isolating device comprising an isolator designed to reciprocatively support the housing of a computer by means of an insert member inserted into the body of the isolator and having the bottom end of the insert member compressibly and extensibly supported therein. The...     

A strut assembly includes an axially elastically extensible tube having attachment means at each end and an axially extensible actuator attached within the tube and between its ends so that reciprocal axial extensions of the actuator cause elastic longitudinal displacements of the strut assembly. Such...     

"A vehicle and the ballistic shock isolator therefor including a turret, a sensor assembly and a shock isolator isolating the turret from the sensor switch and including upper and lower annular members, a plurality of leaves secured at opposing ends thereof to the annular members, each of the leaves...     

A radial compression spring having a formed of an elastomer having a ratio of plastic strain to elastic strain that is greater than 1.5 to 1 into a hollow body having oriented wall sections that include a bend as a result of radial precompression. The spring is precompressed to overcome the compression...     

A shock absorbing suspension comprises a pair of parallel, spaced mounting plates (12), two pairs of counterrotating D-frames (13), and two connecting bars (11). Each pair of frames is slidably attached to the inner side of one of the mounting plates by two grippers (14). The scissoring connecting bars...