Abstract: A wheel suspension arrangement including a suspension spring, at least one control member arranged to control a stiffness of said suspension spring. The control member is displaceable relative to said suspension spring between a retracted position, in which the control member does not interfere with an operation of the suspension spring, and an advanced position, in which it interferes with the operation of the suspension spring in a way that the stiffness of said suspension spring is increased. The wheel suspension arrangement further includes a biasing means configured to bias said control member towards said retracted position.

Abstract: An adaptive valve assembly includes a pipe defining a passageway for conducting engine exhaust gases, a pivot shaft supported by the pipe, and a valve body coupled to the pivot shaft. The valve body is moveable between an open position where exhaust gas flow through the passageway is increased and a closed position where exhaust gas flow through the passageway is reduced. A spring biases the valve body toward the closed position. The spring includes a plurality of coils that have torsional displacement relative to each other as the valve body moves between the open and closed positions. A torsional damper feature is associated with at least one coil of the plurality of coils to provide torsional spring damping.

Abstract: A system for easily adjusting spring rate of a rear shock for mountain bikes or motorcycles without changing an actual overall spring length. The system may include a coil spring a body sized and structured to engage with the coil spring. The spring rate may be adjusted by selectively placing the body between adjacent coils of the spring to deactivate up to one spring coil adjacent the end of the spring.

Abstract: A system for easily adjusting spring rate of a rear shock for mountain bikes or motorcycles without changing an actual overall spring length. The system may include a coil spring a body sized and structured to engage with the coil spring. The spring rate may be adjusted by selectively placing the body between adjacent coils of the spring to deactivate up to one spring coil adjacent the end of the spring.

Abstract: A suspension tuning ring formed as a hollow a cylinder having an outer surface and an inner surface defining a wall, a top, a bottom, and a slit through the wall. The outer surface has an outer diameter that is larger than the outer diameter of a coil spring and the inner surface has an inner diameter that is less than the diameter of a coil spring. The top and bottom of the ring each include a top and bottom retaining groove that are spaced apart, shaped and dimensioned to accommodate each coil. At least one of the top and bottom retaining grooves are dimensioned, or include separate retaining structures, to retain the coils within the retaining grooves. The ring assembled by parting it along the slit and fitted between adjacent coils of a coil spring of a suspension system such that the coils are retained within the top and bottom retaining grooves.

Abstract: A pallet lifter for raising and lowering a pallet. The pallet lifter includes a pallet platform and a movement mechanism that controllably causes the pallet platform to raise and lower. The pallet platform includes a top surface designed to support a pallet, two side walls, and a back wall. The movement mechanism includes a motor and a threaded rod. The electric motor is designed to cause the threaded rod to rotate in a clockwise and counterclockwise direction to cause said pallet platform to raise and lower.

Abstract: A pneumatic brake booster includes a drive piston actuating a master cylinder by a push rod while being returned to rest position by a return spring. The brake booster has a vibration damper having a part made of an elastic material working compressively, of overall parallelepipedic shape, with a length greater than the spacing of two coils of the spring prior to its installation in the brake booster and whose front and back faces are equipped with a longitudinal slit penetrating the material mass of the damper for engagement by way of those slits on the two coils of the return spring.

Abstract: A vibration insulation damper (10, 50, 60) insertable into an internal circumferential portion of a coil spring (20) and extending in an axial direction thereof, the vibration insulation damper is provided with an elastic body (14a, 14b, 64a, 64b) having a conical or pyramid outer circumferential surface formed so as to be shortened in distance with respect to the axial direction toward an end portion thereof in the axial direction, and a rib (16a, 16b, 16c, 16d, 16e, 16f, 56a, 56b, 56c, 56d, 56e, 56f) protruding outward from the outer circumferential surface of the elastic body to be brought into pressured contact with the internal circumferential portion of the coil spring when the elastic body is inserted into the internal circumferential portion of the coil spring.

Abstract: According to one embodiment, a spring assembly includes: a substrate; a coil spring having an end turn portion fixed to the substrate; an inner wall provided at an inner peripheral side of the coil spring; and an outer wall provided at an outer peripheral side of the coil spring, wherein one of the inner wall and the outer wall forms a spring fixing wall configured to prevent the end turn portion of the coil spring from coming off in an axial direction of the coil spring, and wherein the other of the inner wall and the outer wall forms a support wall configured to prevent the end turn portion of the coil spring from moving in a radial direction of the coil spring.

Abstract: The present invention comprises a suspension spring and snubber arrangement for reducing transmitted noise from a reciprocating compressor at ?-octave frequency band of 500 Hz and preventing the occurrence of resonance frequency during the reciprocating compressor operation, the arrangement comprising: the suspension spring having a plurality of coils and two opposing open ends; at least one snubber for maintaining the integrity and shape of the suspension spring and for preventing displacement of the suspension spring from their intended position; wherein at least one open end of the suspension spring is loosely fitted over the at least one snubber; and further wherein an internal diameter of the suspension spring is larger than a outer diameter of the snubber so that a gap is defined between the suspension spring and the snubber for minimizing physical contact between the suspension spring and the snubber.

Abstract: A spring damper for absorbing vibration of a double coil spring is made of elastic material and composed of a cylindrical body, outer-wall convex portions, and inner-wall convex portions. The spring damper is arranged in an annular space formed between an outer coil spring and an inner coil spring of the double coil spring, so that the outer-wall convex portions push the outer coil spring in a radial outward direction and the inner-wall convex portions push the inner coil spring in a radial inward direction. Longitudinal ends of the cylindrical body are prevented from being hooked by spring wires of the outer or inner coil spring, when the double coil spring is expanded and compressed.

Abstract: An adjustable spring system includes an adjustment member adjustable relative to a coil spring to provide a desired number of unsupported coils. A method of adjusting the spring rate of the spring includes detecting a condition, and driving the adjustment member with an actuator in response to the detected condition. An effective length of the spring is changed with the adjustment member.

Abstract: A dynamic vibration absorber for a vehicle suspension system includes a spring elastically supporting a vehicle body on a vehicle frame, the spring including multiple coils, an isolator secured to at least one of the coils, at least a portion of the isolator being elastically displaceable in response to movement of one of the coils, and a mass formed as unit with the isolator portion, and supported on the isolator for elastic movement.

Abstract: A vibration isolator is described for inhibiting transfer of vibration to an apparatus during evacuation thereof by a pump. The isolator comprising a bellows for isolating from the ambient atmosphere fluid drawn from the apparatus by the pump. A first flange is connected to one end of the bellows for mounting the isolators the apparatus, and a second flange is connected to the other end of the bellows for mounting the isolator to the pump. The bellows surrounds a resilient element, preferably a helical tension spring, which is substantially co-axial with the bellows. The resilient element has a first end located proximate to the first flange and connected to the second flange, and a second end located proximate to the second flange and connected to the first flange.

Abstract: Systems and methods provide variable spring stiffness for weight management in a vehicle. One system includes a plurality of springs and a plurality of spring retainers configured to adjust a number of inactive coils of the plurality of springs. Additionally, a motor is provided that is connected to the plurality of spring retainers and configured to actuate the spring retainers to adjust the number of inactive coils of the plurality of springs. Further, a controller is provided that is coupled to motor to control the motor to actuate the spring retainers to adjust the number of inactive coils of the plurality of springs.

Abstract: An inner and an outer spring plate are disposed, in a radially spaced relationship from one another, on a spring strut cylinder. In a first springing position (normal position), the helical spring is supported with a turn region of small diameter against the inner spring plate. In a second springing position (sports position) of the helical spring, the latter is supported with a turn region of larger diameter against the outer spring plate.

Abstract: A vehicle height adjustment device has an adjustment bolt (30) rotatably supported by or fixed to a wheel-side member or a vehicle-body member, and a spring seat member (10) threadedly engaging with the adjustment bolt. Rotation of the spring seat member is limited by a bump rubber pedestal (41) (or a coil spring bracket (9)). Displacement of the spring seat member occurs in an axial direction of rotation of the bolt, in accordance with rotation of the bolt. According to the present invention, rotation of the spring seat involved in rotation of the bolt for adjusting the vehicle height can be restricted, and a construction of a vehicle height adjustment mechanism can be simplified so that the number of parts or members of the device is reduced.

Abstract: A blocking device for blocking a suspension strut of a motor vehicle for transportation of the motor vehicle. The suspension strut has a damper device and a helical spring. The helical spring is arranged between two spring plates and embraces at least one axial section of the damper device. The blocking device has a spacer body which is of substantially C-shaped design and can be fitted between the two spring plates to the damper device in a manner embracing an axial section on the latter.

Abstract: A compression spring assembly is disclosed herein. The compression spring assembly may be used in a fuel injection device and may include a compression spring having first and second adjacent turns spaced apart by a distance. The compression spring assembly may further include a damping element arranged between the first and second turns and having first and second spaced apart support regions separated by an arched third support region. The first and second support regions may be configured to exert force on a surface of the first turn, and the third support region may be configured to exert force on a surface of the second turn to at least inhibit movement of the first turn toward the second turn during operation of the spring.

Abstract: Large-diameter projection portions and small-diameter projection portions are formed in each of the two annular plates, while large-diameter end turn portions, which are respectively associated with large-diameter projection portions, and small-diameter end turn portions, which are respectively associated with small-diameter projection portions, are formed in the compression coil springs. Then, a punch having a diameter portion, whose diameter is larger than the inside diameter of the large-diameter projection portion, is inserted thereinto and increases the diameter thereof. Consequently, the large-diameter end turn portions of the compression coil springs are assembled to each of the annular plates.

Abstract: In a coil spring of closed-end type, the coil spring is characterized in that a coupler is fixedly mounted between: an outer peripheral surface of a terminal convolution of a coil element rod; and, an outer peripheral surface of a subsequent convolution subsequent to the terminal convolution of the coil spring of closed-end type, whereby an amount of initial deflection is decreased.

Abstract: In combination with a railway locomotive brake valve which has an exhaust valve assembly, a spring housing and a range spring, there is a device for providing enhanced damping capabilities. The device minimizes spring oscillation during operation of the locomotive brake valve.

Abstract: A shock-absorbing device includes an outer threaded tube, a threaded rod having a retractable rod, a compression spring, an adjusting nut, and an urging nut. Thus, when the urging nut on the outer threaded tube is unscrewed, the threaded rod can be rotated relative to the outer threaded tube, thereby adjusting the relative distance between the threaded rod and the outer threaded tube, such that the height of the automobile can be adjusted largely. In addition, the scales of the flat surface can be used to indicate the length of the shock-absorbing device, so that the height of the automobile can be adjusted exactly.

Abstract: A device for reducing the resonant vibrations of a helical valve spring of an internal combustion engine includes a member, such as a tension cable, attached between one end of the spring and a coil mid-section of the spring for limiting the movement of the coil mid-section away from the one end of the spring to about the distance between the coil mid-section and the one end of the spring when the spring is in a condition corresponding with a condition at which the spring is in static equilibrium.

Abstract: A supplementary spring assembly (104) is fitted to three consecutive turns (86.1, 86.2, 86.3) of a vehicle suspension coil spring (102). The spring assembly (104) includes a central torsion-producing portion (105) having a pair of half-turn torsion springs (106, 108). The half-turn torsion springs (106, 108) are connected to each other by a C-shaped bight portion (109) which engages an intermediate turn (86.1) of the coil spring (102) in a clamping fit. First and second arms (110, 112) extend from opposite ends of the torsion springs (106, 108) and pass slidably through complemental apertures (114) formed in mounting blocks (116). The mounting blocks (116) include a clamping arrangement in the form of a C-shaped recess formed in the block (116) which is sized to fit around non-adjacent turns (86.2, 86.3) of the coil spring (102).

Abstract: A noise reduction assembly includes a substantially annular isolator and a substantially annular noise guard extending therefrom. The isolator and the noise guard sandwich a first convolution of a vehicle suspension coil spring. The noise guard is aligned to the coil spring such that the noise guard extends between the first and second convolutions between 1.0 and 1.4 turns of the coil spring to prevent contact in this area.

Abstract: An arrangement is provided for blocking a spring in a spring strut of a motor vehicle. A spacer element for transporting a vehicle consists of at least one segment which can be snapped into the spring and is supported by a lower free end on a stationary spring plate of the spring strut.

Abstract: To avoid an increase of the number of steps for assembling a coil spring and seat members and a reduction in mechanical strength of the coil spring or the like, a coil spring assembly 20 is provided with the coil spring 25 and the seat members 26. Each seat member 26 has receivers 27 for contacting both ends of the coil spring 25 and projections 28 extending into the coil spring 25 from the receivers 27. Ribs 29 are formed on an outer circumferential surface of the projections 28 for engagement with the coil spring 25.

Abstract: A spring assembly for an automatic transmission of automobiles includes a generally ring-shaped spring retainer formed from a synthetic resin material, a plurality of mounting protrusions circumferentially formed on a peripheral face of the spring retainer, and a plurality of coil springs having one ends mounted on the mounting protrusions respectively. Alternatively, the spring assembly includes a pair of generally ring-shaped spring retainers each formed from a synthetic resin material, a plurality of mounting protrusions circumferentially formed on each spring retainer, a plurality of guide protrusions circumferentially formed on each spring retainer so as to be positioned between each mounting protrusion and the adjacent one, and a plurality of coil springs having one ends mounted on the mounting protrusions of either spring retainer and the other ends fitted to the guide protrusions of the other spring retainer respectively.

Abstract: For changing the spring rate of a coil spring in a simple manner, a spacing element is screwable into the coil spring and can be locked in different positions with respect to the coil spring by way of a fixing device. The spring element can, for example, be screwed into the spring via its receiving groove.

Abstract: The etching of a thin substrate (23) is performed using a holder (10). The holder (10) has a base (11) that has a cavity (20). The cavity (20) is pressurized to compensate for the pressure and stress that is applied to the substrate (23) by an etchant solution. The holder (10) also has a sequence of o-rings (22,24,26) that are used to hold the substrate (23) in place and to prevent etchant from leaking into the cavity (20) and attacking a bottom surface (32) of the substrate (23). The pressure necessary to hold the substrate (23) in place is applied by a cover ring (28) that is screwed onto the base (11).

Abstract: An automotive accelerator return spring assembly has a tension coil spring with a variable diameter internal damper therein. The damper clips to the spring on one end and has tangentially spaced, flexible fingers on the other end for absorbing vibrational energy.

Abstract: A mattress is provided with an innerspring unit, one or more layers of foam material disposed over the innerspring unit, and a mattress cover enclosing the innerspring unit and foam layers. The innerspring unit has first and second border wires spaced apart from each other by a predetermined distance and a plurality of spring coils arranged in a plurality of rows between the border wires. Each of the coils is formed of a helical wire member having a plurality of spaced apart convolutions. A plurality of compressible support members are provided between adjacent rows of coils. The support members are generally in the shape of an I-beam, with an upper portion of a first width, a middle portion of a second width, and a lower portion of a third width. The upper portion of each support member is provided between a first two adjacent convolutions of the coil springs and the lower portion of each support member is provided between a second two adjacent convolutions of the coils.

Abstract: The invention herein is a coil spring assembly for the suspension of a vele including a series of plates whose tapered edges protrude between the coils of the spring. The plates are slideably mounted on bolts parallel to the longitudinal axis of the spring, the bolts being moveable toward or away from the longitudinal axis of the spring. The resulting movement of the plates toward or away from the spring causes a thicker or thinner zone of the tapered edge of the plate to be disposed between the spring coils, thereby changing the degree to which the plates stiffen the spring.

Abstract: A noise suppressing device for a coil spring, and the combination of a spring equipped with such a device, in which the noise suppressing device takes the form of at least one spring metal sleeve of arcuate C-shaped cross section extending about and tightly engaging a portion of the spring intermediate the length thereof. A lug portion of the sleeve projects into the spacing between a pair of adjacent coils and limits the extent of sliding movement of the sleeve along such coils as the spring expands and contracts.

Abstract: A vibration damper for bodies which extend substantially parallel to one another, consisting of a clip made of a permanently elastic material and adapted to be slipped undislodgeably onto one of the bodies, and of at least two lugs projecting therefrom in the direction of at least one further body which clasp the latter with elastic initial tension, permitting relative displacement.

Abstract: A coil spring for a motor vehicle wheel suspension system having two spring segments spaced apart in the axial direction along the central spring axis and a reinforced connecting piece extending parallel to the central spring axis for connecting the two spring segments. The two spring segments and the connecting piece form a unitary structure.

Abstract: Damping elements physically contact some of the coils on one or more mechanical coil springs disposed between a railway car body and a truck. The coils contacted may be at the ends of the springs or at areas between the ends. When double springs are involved, with one being spaced within the other, the damping elements are disposed in the space between the springs at the ends thereof.

Abstract: 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. Locking means including a timing circuit for clamping and unclamping the connector against movement, so as to improve vibration isolation at frequencies higher than approximately 2f.sub.n while substantially improving the performance at lower frequencies.