Abstract: A composite endless power transmission belt has a resilient plastic outer tubular member with a cylindrical bore, and an inner coil spring member extending wholly and slidably within the cylindrical bore and endlessly through the bore. Assembly is by inserting the spring into the tubular member and screwing a reduced diameter end of the spring into the larger diameter spring end to form an endless belt. The lengths of both members are selected such that when uninstalled, the outer member is in compression and the inner member is in tension, yet when installed, the outer member is partially or completely decompressed and the inner member is in optimal operating tension.

Abstract: A pressure plate assembly for a friction clutch includes a housing arrangement; a pressure plate held in the housing arrangement with freedom to rotate in the same direction as that in which a rotational axis extends; a stored-energy element; and a wear-compensating device, acting in the path of force transmission between the stored-energy element and the pressure plate and/or between the stored-energy element and the housing arrangement, where the wear-compensating device has at least one adjusting element which can be moved in an adjusting direction to compensate for wear and at least one spring element, which pretensions the minimum of one adjusting element for movement in the adjusting direction, where at least certain areas of the minimum of one spring element extend in the circumferential direction relative to the rotational axis, and where the minimum of one spring element is provided with a support arrangement, which passes through at least certain areas of the spring element, the support arrangement

Abstract: A helical compression spring (40) for use in a component (1) of a fuel injection system, for example a component in the form of a fuel injection valve (1), which helical compression spring (40) has a spring wire cross section that corresponds to a rectangle in which the corners are rounded and the inner surface (46), which constitutes the inside of the helical compression spring (40), is curved in a sharply convex fashion. This cross sectional contour of the spring wire reduces the shearing stresses when the helical compression spring (40) is loaded, as a result of which the helical compression spring (40) can be embodied as shorter while retaining the same spring constant (K).

Abstract: Provided is a wheel suspension system (4) and a spring (6, 16, 26) therefor which can improve the ride comfort of the vehicle by reducing the sliding resistance between the cylinder and the piston of the tubular shock absorber (5) surrounded by the compression coil spring without increasing the size of the suspension system and without complicating the assembly work. The compression coil spring is adapted to produce lateral forces between two ends thereof as the compression coil spring is extended and compressed by forming the coil spring so as to have cyclically varying pitch angle for each turn of the coil wire.

Abstract: A shock absorber for an automobile which exhibits a vibration damping effect in a wide range of a frequency, while suppressing generation of frictional noise. The shock absorber for the automobile has a buffer member interposed between parts. The buffer member has a laminated structure including a plurality of vibration damping layers each having a peak of loss tangent tan&dgr; in a range of a frequency which is different from others and surface layers made of thermoplastic resin.

Abstract: A method for manufacturing a front door weather strip includes continuously forming one extrusion molding section by extrusion molding corresponding to a region from an upper section of the front door to the rear side section of the front door and forming a mold molding section corresponding to a corner of a rear side upper section of the front door used a mold so as to connect both ends of the extrusion molding section, thereby manufacturing the front door weather strip.

Abstract: The present invention is directed to a curved helical compression spring having a plurality of coils along a curved coil axis. Each coil constituting the helical compression spring is increased and decreased in diameter, and the order of the increased diameter and the decreased diameter of each coil is reversed at a predetermined position on the longitudinal axis of the helical compression spring, so as to provide the curved coil axis, such as the coil axis curved in C-shape. For example, one section of each coil having approximately a half of the circumference of each coil, which is divided by a plane including the coil axis, is increased in diameter, whereas the other one section of approximately a half of the circumference of each coil is decreased in diameter. The curved helical compression spring may be mounted on a vehicle suspension.

Abstract: A spring element is made of a spring material and is formed into a generally elliptical shape. Two mounting pins extend in a normal direction through parallel relatively short segments of said elliptically-shaped spring element. The mounting pins are substantially aligned with the shorter of the two axis of the elliptically-shaped spring element so as to extend both inwardly and outwardly of said elliptically-shaped spring element. An elastomeric coating is applied around substantially all of the spring elements and a pair of blocks, each of which surrounds one of the mounting pins receives one of the mounting pins. A number of spring elements are joined together by two parallel, spaced-apart coupling links which contain cavities therein to receive one of the blocks of each of the spring elements.

Abstract: A micromachined element mounted to a substrate, the element including a cantilever having a proximal portion attached to the substrate and a coilable distal portion terminating in a free distal end. The coilable distal portion, upon being heated, is capable of bending away from the substrate and at least partially coiling upon itself to form a coiled portion. At least part of the micromachined element may be electrically conductive. In various embodiments, the micromachined element may function as a mechanical microspring, an electrically conductive link, and/or a magnetic coil. A method of fabricating the microelement may include the steps of selectively depositing various layers upon the substrate.

Abstract: A non-linear non-circular coiled spring comprises a first coil portion of rectangular cross-section having a lateral length “a” and a longitudinal length “b”, a second coil portion of rectangular in cross-section having a lateral length “b” and a longitudinal length “a”, and a transition coil portion connecting the first coil portion and the second coil portion by gradually twisting one of first and second coil portions toward the other of first and second portions. The non-linear non-circular coiled spring is adapted to be used as a car suspension or a machine spring.

Abstract: A concrete rod-like member having a seismic control structure which utilizes structural features of the rod-like structure efficiently without paying high cost and is capable of protecting a body potion of the rod-like member (including a building carried on piles when the rod-like member is used as the piles) against rupture even when subjected to the level 2 load. A piled ring assembly composed of a plurality of annular plates placed one upon another and tied together in a direction of piling is disposed around the periphery of a longitudinal portion of a body of the concrete rod-like member such that a central axis of the piled ring assembly is coincident with a longitudinal central axis of the rod-like member body. The longitudinal portion of the rod-like member body including the ring assembly forms a frail portion of the rod-like member. The rod-like member may include two or more of the frail portion.

Abstract: A drain valve providing a drain sleeve having a first end, a second end and a flow-chamber therebetween. The first end includes a first diameter being smaller than a second diameter of the second end. The first diameter and the second diameter cooperate to define an annular shoulder therebetween. The first end is threadingly received by an air conditioner outlet and the drain sleeve has at least one drain hole therethrough near the shoulder for draining condensation from the air conditioner outlet. An outer cap is provided having an outer wall and an annular side wall projecting perpendicularly from an outer periphery of the end wall. The side wall is the outer cap is threadingly engageable with the drain sleeve second end. A sealing assembly is fixedly connected at a first end thereof to the end cap end wall and includes a second end thereof projecting inwardly from the end cap end wall towards the shoulder.

Abstract: A helical spring for a spring clutch including:(i) at least one right hand wound section (B);(ii) at least one left hand wound section (A); and(iii) tabs (2,3,4 & 5) projecting from both the right hand wound section and the left hand wound section.

Abstract: A flexible shaft coupling has first and second hubs provided with outwardly extending flanges formed at ends of cylindrical parts of the hubs. Each may be connected to a transmission shaft. The flange of the first hub has a plurality of spring holes therein located within the periphery thereof. A holder is fitted over the cylindrical part of the first hub and fixed to the flange of the second hub so as to hold the flange of the first hub between the holder and the flange of the second hub. Barrel-shaped coil springs pass through the spring holes in the flange of the first hub. Each barrel-shaped coil spring is compressed between the second hub and the holder so that the coil springs deflect to bring adjoining coils thereof into contact with each other when torque is transmitted.

Abstract: Spring apparatus is provided which includes coil springs having intermediate and end coils suitable for interconnection in order to form a continuous spring which maintains a constant load-deflection characteristic over all intermediate coils unaffected by the joint end coils. This configuration therefore finds particular utility in providing bias without compromise of sealing, electromagnetic shielding and/or conductivity.

Abstract: Spring apparatus is provided which includes coil springs having intermediate and end coils suitable for interconnection in order to form a continuous spring which maintains a constant load-deflection characteristic over all intermediate coils unaffected by the joint end coils. This configuration therefore finds particular utility in providing bias without compromise of sealing, electromagnetic shielding and/or conductivity.

Abstract: A coil spring wherein the external surfaces of the convolutions have cylindrical major portions and flats which abut the neighboring convolutions when a spring is compressed flat under load. This reduces the likelihood of radial displacement of one or more convolutions under load and the likelihood of a reduction of the axial length of the coil spring when in its unstressed condition subsequent to being repeatedly compressed flat under load. The external surface of each convolution can be provided with one or two flats, and the planes of the two flats preferably make a small acute angle if the coil spring is caused to assume an arcuate shape when in actual use.

Abstract: Spring apparatus is provided which includes coil springs having intermediate and end coils suitable for interconnection in order to form a continuous spring which maintains a constant load-deflection characteristic over all intermediate coils unaffected by the joint end coils. This configuration therefore finds particular utility in providing bias without compromise of sealing, electromagnetic shielding and/or conductivity.

Abstract: A support device having a plurality of support units, each comprising a plurality of flexible, substantially vertical support columns, with the bottoms of the support columns attached at equidistant intervals to a base member and the tops of the support columns attached at equidistant intervals to a substantially perpendicular support platform. The support columns provide directional flexibility to the columns, upon compression, to provide a substantially uniform counter-force through a range of flexion of the support columns and corresponding downward deflection of said support device. Such uniform counter-force during compression simulates a fluid-like support system. The support columns may be comprised of a solid, synthetic foam such as high density polyurethane or springs made of metal or other material. The support units preferably are arranged in a matrix to provide collective support.

Abstract: Spring apparatus is provided which includes coil springs having intermediate and end coils suitable for interconnection in order to form a continuous spring which maintains a constant load-deflection characteristic over all intermediate coils unaffected by the joint end coils. This configuration therefore finds particular utility in providing bias without compromise of sealing, electromagnetic shielding and/or conductivity.

Abstract: A gasket assembly for sealing electromagnetic waves includes a canted-coil spring for blocking the propagation of electromagnetic waves therepast. The canted-coil spring includes a plurality of individual coils canted along a centerline thereof. A groove is provided for supporting the coil spring in a position enabling loading of the coil spring along a selected direction. The groove is provided with a selected surface for causing individual coils to always turn in a selected angular direction in order to control electromagnetic shielding effectiveness of the coil spring.

Abstract: This invention is a device for holding a flexible fine mesh fluid filter 30 in a container 12 while a fluid, such as paint, is being drawn from the container by spraying equipment 8. More specifically, the invention comprises a ring of flexible material 20 and a purality, preferably two, of elongate flexible members 18, ends of which are secured to the flexible ring, with their intermediate parts depending from the said ring, and secured together where they cross at their intermediate depending portions, and together with the flexible ring, forming a pocket over which a fine mesh fabric fluid filter is to be positioned and held. When so assembled in use the suction pipe of the spraying equipment with its filter is received within the pocket and held in the container to filter the paint, or other fluids as it is drawn from the container. In the best and preferred form of the invention, all of the parts above mentioned are in the form of coil springs, but it should not be considered so limited thereto.

Abstract: A torsional vibration damper (1) has an input assembly (2,6,7) and a reactor plate (25) with coil springs (40) circumferentially spaced about a center axis of the damper to absorb vibration between the input assembly and reactor plate. Each coil spring (40) includes a plurality of active coils (50) and partial end coils (44). The active coils have a pitch greater than the diameter (d) of the wire (11) and the partial end coils have a pitch equal to the diameter of the wire. A flattened arcuate surface (42) is formed on the partial end coil which spans less than a full coil turn. A distal tip (46) of the end coil has a thickness that is a fraction of the diameter of the wire that is inversely proportional to the amount of arcuate flattened surface of the end coil section. The gap (66) between the tip and the adjacent coil is also inversely proportional to the amount of arcuate spanning surface of the end coil section.

Abstract: An isolator mount assembly is disclosed which includes a support structure, a device and an isolator, disposed between the support structure and the device for reducing transmission of mechanical vibration therebetween. The isolator includes a plurality of canted-coils having an elliptical shape which are oriented for loading along a major or minor axis thereof. An elastomer may be applied to the coils and either bonded or unbonded thereto in order to provide the isolator with the capacity to be adapted to desired transmissibility and isolation efficiencies.

Abstract: A window noise attenuation device that keeps window balance springs from ratting against the inside of the spring covers when the balance spring is caused to vibrate. The apparatus is designed to be slipped over the window balance spring during the construction of the window. The device can be installed either by hand or by machine. The apparatus features a positioning section that keeps the device substantially fixed in position on the balance spring during use. An offset section holds the balance spring fimly in position away from the walls of the spring cover and jamb liners when the balance spring is caused to vibrate by rapidly closing or opening the window or from other jarring such as slamming a door. The low cost device is designed to last as long as the window spring mechanism.

Abstract: An apparatus for inserting a coil of wire into a pipe which includes a rotatable drum for taking up a coil of spring wire, a guide for guiding the coil drawn from the rotatable drum, a push-pull device for applying external forces to the coil for feeding the coil into the pipe and retracting the coil out of the pipe, and a motor for rotating the guide and/or the drum. The drum and the guide are formed separately and are rotatable independently of each other, which rotation results in rotation of the coil of spring wire. The coil of wire has a rectangular or trapezoidal cross-section which enables the wire to effectively run through bends in the pipe without deforming or breaking.

Abstract: A spring assembly includes a plurality of coils interconnected with one another in a spaced-apart relationship for causing the spring assembly to exert a force in a loading direction approximately normal to a tangent to a centerline of the plurality of coils in response to deflection of the spring assembly along the loading direction. An elastic material is provided which is disposed around and between the plurality of coils and has a hollow cross section for modifying the force exerted by the spring assembly in response to the deflection of the spring assembly along the loading direction.

Abstract: A length of canted coil spring is disclosed which is suitable for forming a stable, when unsupported, circular axially loadable spring. The length of spring includes a plurality of elliptical coils canted along a coil centerline with the coil centerline following a helical path about a helix centerline. The length of canted coil springs is approximately equal to a distance, or pitch, along the helix centerline necessary for one complete revolution of the helical path thereabout.

Abstract: An electromagnetic shield for a rotary/reciprocating shaft includes a garter-type resilient coil spring blocking the propagation of electromagnetic waves therepast with the coil spring including a plurality of individual coils for causing a blockage of electromagnetic waves therepast independent of the compression of the coil spring within a range of deflection of the individual coils.

Abstract: A canted coil spring assembly includes a plurality of coils having a major and a minor axis and canted along a centerline defined by an intersection of the major and minor axis. A trailing portion of each coil is defined by a back angle which determines the load deflection characteristics of the canted coil assembly. A leading portion of each coil is defined by a front angle and a plurality of coils are non-invasively supported in a preselected orientation for controlling the resilient characteristics of the coils.

Abstract: An electromagnetic shielding gasket assembly includes a coil spring for blocking the propagation of electromagnetic waves therepast, with the coil spring including a plurality of individual coils canted along a center line thereof. The plurality of individual coils are supported in an orientation for controlling the electromagnetic shielding effectiveness of the coil spring, and a formable conductive material, disposed on said plurality of individual coils, is provided for being formed by the plurality of coils upon loading thereof. The formed conductive material fills an aperture of the coil spring to further block the propagation of electromagnetic waves.

Abstract: The invention relates to torsion vibration dampers in the power transmission path of a motor vehicle with an internal combustion engine, the coil thrust springs used being particularly in the case of a considerable length in proportion to their diameter, already precurved prior to fitment into their final position. This facilitates fitment and makes it possible to influence the development of friction force as the rotary speed increases.

Abstract: A resilient electromagnetic shielding gasket utilizes a plurality of conductive wire coils which are loaded in a manner so that coil spacing may be selectively adjusted at specific areas along the circumference thereof in order to provide an electromagnetic shield. Other portions along the circumference of the gasket provide sufficient biasing capability to take up for variations that may occur due to torquing, eccentricities, irregularities and other variables and thereby imminent contact between mating surfaces under load. The spacing along a seal-load portion of the gasket is selected to limit the passage of electromagnetic energy with a wavelength greater than a selected value.

Abstract: An arcuate spring having a plurality of helical coils which are configured and dimensioned to provide an arcuate shape to the spring and being substantially free of internal stressses which would tend to urge the coils into linear alignment. The spring is designed to function under load conditions while maintaining its natural arcuate shape. The spring is adapted for use in a channel having an arcuate shape approximately matching that of the spring itself, for providing resilient force in a direction tangential to the arcuate centerline of the spring at its contact ends.

Abstract: A canted-coil spring includes a plurality of coils having a major and a minor axis and canted along a centerline defined by an intersection of the major and minor axis. The coils are interconnected in a manner forming a garter-type resilient canted-coil spring and a back angle of each coil, both defines the disposition of a trailing portion of each coil and determines the load-deflection characteristics of the canted-coil spring. A front angle defines the disposition of a leading portion of each coil and the garter-type resilient canted-coil spring is oriented for enabling the loading thereof to be generally radial in direction and along the major axis thereof.

Abstract: A coil spring has a series of short length plastic rollers received on the spring coils so that the rollers engage either a cylinder wall in which the spring works or a rod received through the spring, or both. The rollers act as roller bearings to prevent binding, wear and noise.

Abstract: A non-circular cross-section coil spring, wherein a spring wire having a non-circular cross-section shape is coiled into such configuration that a major diameter of the cross-section is directed in the direction intersecting with a center line of the spring. Torsion is preliminarily given to at least a part of the spring wire so that the coil spring inner circumferential surface side of the above-mentioned major diameter may be deviated to a free end side of the spring with reference to the reference plane of extension and contraction of the coil spring in the case where the coil spring is a compression coil spring, but to the side of the aforementioned reference plane of extension and contraction in the case where the coil spring is a tension coil spring. In a coil spring comprising a larger pitch portion and a smaller pitch portion, a large angle of torsion is preliminarily given to the larger pitch portion and a small angle of torsion is preliminarily given to the smaller pitch portion.

Abstract: A garter-type axially resilient coil spring includes a plurality of coils canted along a centerline thereof with each coil having a trailing portion and a leading portion. Specific resilient performance, or load-deflection characteristics, of the spring is obtained by interconnecting the coils in a manner such that the trailing portion is disposed along an outside diameter of the garter-type axially resilient coil spring and the leading portion is disposed along an inside diameter of the garter-type axially resilient coil spring.

Abstract: A radially resilient canted coiled springs includes a plurality of coils canted along a centerline thereof with each coil having a trailing portion and a leading portion. The disposition of the trailing portion is defined by a back angle between the trailing portion and a line normal to the centerline and the disposition of the leading portion is defined by a front angle between the leading portion and a normal line. Specific resilient performance, or load-deflection characteristics of the radially resilient canted coiled springs is determined by controlling a turn angle of the coil spring.

Abstract: This invention is an annular or garter spring having a welded overlapping region. In this invention, the end tips of a straight spring fit within the spaces between coils at the opposite end of the spring. This result is reached by first hooking an end tip of the spring through the first whole coil at the opposite end of the spring, then placing the opposing end tip between the first and second full coils of the first side of the spring. The coils at the ends of the spring are then clamped to so that each end tip aligns alongside the first full coil of the opposite end of the spring. When that position is reached, the spring will form a virtually perfect ring, and the intertwined coils may be welded together to maintain the garter spring shape.

Abstract: A garter-type axially resilient coil spring includes a plurality of coils canted along a centerline thereof with each coil having a trailing portion and a leading portion. The disposition of the trailing portion is defined by a back angle between the trailing portion and a line normal to the centerline and the disposition of the leading portion is defined by a front angle between the leading portion and a normal line. Specific resilient performance, or load-characteristics, of the springs are obtained by controlling a turn angle of the coil spring. At selected turn angles, springs exhibit a resilient working area bounded by steep load-deflection characteristics.

Abstract: A garter-type axially resilient coil spring includes a plurality of coils canted along a centerline thereof with each coil having a trailing portion and leading portion. The disposition of the trailing portion is defined by a back angle between the trailing portion and a line normal to the centerline and the disposition of the leading portion is defined by a front angle between the leading portion and the normal line. Specific resilient performance, or load-deflection characteristics, of the spring is obtained by controlling the back angle. At selected back angles, the leading portion may be disposed at front angles beyond the range heretofore thought possible.

Abstract: The rotary/reciprocating seal apparatus includes a resilient ring member with a circumferential groove therein having a surface of revolution disposed at an angle with the axis of the ring member. The resilient ring member includes an axial opening thereinside for accepting and enabling the shaft to be rotated and/or reciprocated therein. The cylindrical housing is provided which includes an axial opening thereinside to accommodate the ring member and includes a groove on an inside surface of the cylindrical housing with a second surface of revolution disposed at an angle with an axis of the cylindrical housing. Spring means are provided in both the ring member and the cylindrical housing grooves for forcing the first and second surfaces of revolution away from one another in order to cause axial loading between the ring member and the cylindrical housing.

Abstract: A device is provided for achieving a seal between the edge portions of two metal plates which are used as screens against electromagnetic fields, the device including a metallic sealing strip which is intended to be compressed along these edge portions. The sealing strip (1) comprises a helically wound metal element with a cornered cross section, and the edge portion of one metal plate (6) is intended, by engaging against a support (4), to be pressed against the sealing strip (1) both in the cross-sectional and in the longitudinal direction of the strip, so that the turns of the helically wound metal element are twisted in the longitudinal direction of the strip in relation to their original positions. Parts of the cornered sides of the metal element will thus be pressed against said edge portions, which gives good metallic contact.

Abstract: A synthetic resin-coated spring comprising a spring body and a synthetic resin coating layer formed on the spring body. The synthetic resin coating layer contains an olefin polymer modified with an unsaturated carboxylic acid or a derivative thereof. A method for making the coated spring is also described.

Abstract: A helical bearing bushing for use between a cylindrical shaft and an element containing a bore disposed around the shaft, such as a kingpin and steering knuckle assembly, includes a helically wound spring wire as the bearing bushing. The spring wire is helically wound to form a tubular member having interior and exterior surfaces which form the respective bearing surfaces. The tensile force of the helical spring holds arcuate surfaces of adjacent coils in elastic abutment, although lubricant under pressure can elastically separate the coils and pass from one surface to the other. Non abutting portions of the arcuate surfaces form helical lubrication grooves. Either the interior surface or the exterior surface, or both, may be machined flat to provide a better bearing surface.

Abstract: A springing arrangement comprises a coil spring and a spring-engaging member acting thereon between the two ends of the spring and in a direction which differs from the longitudinal direction of the spring, thereby to provide non-linear dependency of the spring force on the distance covered by the spring-engaging member. The spring-engaging member is made up of two elements on respective sides of the spring, each element bearing against the spring by way of a curved surface and extending over a plurality of turns of the coil spring.

Abstract: A coiled spring includes a plurality of coils with each of the coils being interconnected with one another in a spaced-apart relationship and disposed in a preselected acute angle with the centerline of the coil spring for causing the coil spring to exert a constant force in a loading direction approximately normal to the centerline of the coiled spring in response to a deflection of the coil spring along the loading direction. When placed in an operative relationship with a sealing material, the resulting coil spring seal enables positive sealing between cooperating parts to prevent passage of fluid therepast, despite small changes in the spacing between the parts which may change due to eccentricity and part dimension, wear, temperature, or pressure effects.

Abstract: Device comprising a helically shaped spiral spring and means for bringing the spring to expand from a first state of a certain diameter to a second state of larger diameter and vice versa, characterized thereby that said means are arranged to rotate the ends of the spring relative to each other with maintained length of the spring so that the transition from said first state to said second state takes place by reducing the number of spring turns within said length and the corresponding increase of the pitch of the spring, or to supply to a given length of the spring further spring material at at least one end of the said length of the spring so that the transition from said first state to said second state takes place independent of pitch and number of spring turns within the said length; and a method for transluminal implantation of an intravascular prosthesis using the said device.

Abstract: A composite spring comprising coaxially coiled sheet in which filamentary materials spiral about a first rotational axis of the spring in performed resinous convolutes. A method of fabricating a coaxial composite spring having filamentary materials that spiral about a first rotational axis of the spring in preformed resinous convolutes comprising wrapping a plurality of sheets including a release sheet about a mandrel wherein the sheets comprise the filamentary materials and hardenable resin.