Abstract: The present invention regards an elongated fluid actuator arrangement comprising a first and second cylinder housing (3, 5) extending in a longitudinal direction (X), respective housing (3, 5) encompasses a first respective a second piston body (7, 9). The respective piston body (7, 9) divides the respective cylinder housing (3, 5) in a first and second cylinder chamber (11, 13). The arrangement (1) is adapted for connection to a valve member means (15) of a fluid supply device (17). A piston rod member (19) extending through said respective first and second piston bodies (7, 9). The first piston device (7) comprises a piston rod engagement and disengagement means (29), which is adapted to engage or disengage the first piston device (7) to/from the piston rod member (19), wherein an engagement area (A2), defined by an engagement zone between the first piston body (7) and the piston rod member (19), is larger than a cross-sectional piston area (A1) of the first piston body (7).

Abstract: A pyrotechnic drive device includes a housing (3) provided with a combustion chamber (5) having pyrotechnic material (15) as well as an activation device (13). The combustion chamber is delimited at least in an initial state on all sides by combustion chamber walls (3, 7, 13, 17, 33, 35) formed in at least one partial region by respective pressure-receiving surface or respective pressure-receiving element (17, 35). Each pressure-receiving impact of a pressure-receiving element (17, 35) is impacted after the activation of the pyrotechnic material (15) in such a way by the gas pressure generated in this manner that the pressure-receiving element (17, 35) is moved and/or deformed (17, 35) and/or a mechanical impulse is thus transmitted via the pressure-receiving element (17, 35) to an element to be driven (19) so that a connected substance (25) is transmitted.

Abstract: An actuator includes a piston assembly movably disposed within an assembly housing having a fixedly supported end and an opposing end that receives a movable piston assembly. The piston assembly includes a piston rod and an attached piston head having a fixed orifice as well as an orifice with a check valve to create rate control of the assembly. Hydraulic fluid is caused to move through the axially movable piston head based on compressive and tensile loads imparted to the assembly. A plurality of pre-loaded springs are configured to selectively provide pressure relief in the event the orifices of the piston become clogged, wherein the plurality of pre-loaded springs, such as disc springs, further provide an energy absorbing function of the assembly based on loading conditions.

Abstract: A modular actuator assembly which can be used for partial stroke testing of a valve, the assembly having a force module and a tandem piston module. The force module has a primary piston and piston rod interconnected to a shaft which is movably mounted therein. The tandem piston module is connected to the force module and has a tandem piston and piston rod. An indicator plate is connected to the piston rod and is selectively positionable on the tandem piston rod. The tandem piston rod extends into the force module and acts as a pneumatically engaged hard stop for preventing spurious travel of the primary piston and hence spurious valve travel.

Abstract: An apparatus for seamlessly activating an on-demand function related to a fluid-driven instrument connects to an output of control valve regulating system pressure during normal operation of the instrument. The apparatus includes a fluid-operated bistable circuit that is switchable from a standby mode to an actuating mode by a brief drop in system pressure. In the actuating mode the circuit acts on a switch or valve to activate the function. Turning off system pressure to a longer time returns the circuit to its standby mode. The circuit includes a two-port biased actuator responsive to pressure imbalance between its ports, which are separately pressurizable through, respectively, an actuator-controlled valve and a flow control module.

Abstract: A control system of a hybrid construction machine includes fluid pressure pumps configured to supply a working fluid to a fluid pressure actuator, a regeneration unit having a regeneration motor for regeneration to be rotated by the working fluid discharged from a load side pressure chamber of the fluid pressure actuator, a rotating electric motor coupled to the regeneration motor, and a storage battery configured to store electric power generated by the rotating electric motor, and a variable throttle configured to bleed a portion of the working fluid obtained by excluding a flow rate of the working fluid guided to the regeneration motor from the working fluid discharged from the load side pressure chamber.

Abstract: There is provided a manufacturing method of a fluid flow straightening member having a structure in which disturbance of an air flow does not easily arise. In at least one of outermost layers of an outer circumferential surface or an inner circumferential surface which configures a tubular portion of the fluid flow straightening member, ceramic fibers are oriented in a direction along a plane including a central axis which is surrounded by the tubular portion.

Abstract: A mechanism is hereby disclosed that, when activated in the linear direction of its axis, will expand and contract radially. The novel nature of the device is that of compliant methods and materials used in its design. Compliant members, referred to as dyads, translate the motion and imply resistance in a single structure. Thus eliminating the need for separate members, hinges, pins, springs and the associated assembly. When these compliant dyads are combined in the novel configurations hereby disclosed, a device is created that expands (or contracts) in multiple directions from its primary axis of actuation. Furthermore, one or more actuation dyad sets could be arranged at various angles relative to the global vertical axis. The radial expansion/contraction can be 2D or 3D by adding more primary activation dyad sets. Such a device can be applied to many applications and industries. One such application is for gripping the inside of a tube or object for moving manually or in automation.

Abstract: A device for holding an object to a support utilizing a base member that is connected to a resilient body via a connection mechanism. An arm is hingedly connected to the base member and possesses a surface for mounting an object. The base member and resilient body fit over a support.

Abstract: A belt clip is adapted for storing a belt. The belt clip includes a first clip member and a second clip member that mechanically and removably attaches to the first clip member. The first clip member and the second clip member collectively form an elongated tunnel through which a belt can be looped.

Abstract: A connector system for mechanically connecting two structural elements to each other, consisting of a connector element and mating grooves in each structural element. The connector element is comprised of a base plate having a split-tongue element at each side or end of said base plate. Each joined element has a mating groove formed into its connector-receiving surface. The mating groove is designed to allow fabrication via four sequential circular saw cuts, without loss of saleable decorative surface, and at a rate consistent with economical commercial production of vinyl, laminate, or hardwood flooring. The connector element is readily extruded in a variety of polymers, including PVC. The connector and mating grooves interact so as to generate a force component acting to forcibly draw the connector into the mating grooves. The connector system operation is relatively insensitive to geometric deviations associated with normal manufacturing methods.

Abstract: A quick fastener by means of which at least a first and a second component are connectable to each other. The quick fastener includes a fastening bolt having a fastening thread of a first spiral direction, which is fastenable at the second component, and a compressible pretension element which is fastenable at the first component. The compressible pretension element includes a pretension thread at a radial inner side having a second spiral direction opposite to the first spiral direction, a hollow cylindrical thread element which is screwable with an outer thread at a radial outer side into the pretension thread of the pretension element having an inner thread at its radial inner side into which the fastening thread of the fastening bolt is screwable. At least a constructive rotation protection is provided between the hollow cylindrical thread element and the compressible pretension element. A production method for the quick fastener is further provided.

Abstract: A drive unit reliably and stably attached to a bracket, even if the bracket has high stiffness, includes a housing including first and second suspension bosses located between first and second side plates of the bracket in a left-right direction of a bicycle. A first bolt is fastened to the first suspension boss and inserted from an outside in the left-right direction of the bicycle into a hole in the first side plate. A cylindrical member is fitted into an insertion hole in the second suspension boss that is open toward the second side plate. The cylindrical member is slidable in the left-right direction of the bicycle and includes a thread groove located on an inner periphery thereof engaging a thread located on an outer periphery of a second bolt that is inserted from the outside in the left-right direction of the bicycle into a hole in the second side plate.

Abstract: Presently disclosed is a standoff fastener for use in a compound floor structure. The threaded fastener includes a threaded standoff portion designed to accept a nut which has a diameter larger than a head portion of the standoff fastener. The head portion is located centrally within the fastener in order to reduce a tendency of the fastener to pivot within a driver during the fastening process.

Abstract: A laser welded joint improving the tensile shear strength without causing an increase in the welding time and without using an expensive remote laser head, that is, a laser welded joint obtained by arranging metal sheets overlaid and welding them by a laser beam from the overlaid direction, wherein when a total thickness of the metal sheets welded overlaid is “t” (mm), the width of the weld metal at the joined interface is 0.6t1/3+0.14 (mm) or more.

Abstract: A tubular goods connection for releasably coupling tubular members includes: a coupling having a first internal wedge dove-tail thread formed within a longitudinal bore of the coupling and a second internal dove-tail wedge thread; a first tubular member having a first mating external vanishing dove-tail wedge thread extending from a first proximal pin end face; and a second tubular member substantially identical to the first tubular member; wherein when the first and second tubular members are made-up into the coupling using a predetermined recommended optimum torque, a distance D between the first pin end face and the second pin end face is in the range of 0 to 10 millimeters and when the distance D is equal to 0 there is contact between the first pin end face and a second pin end face of the second tubular good but there is no axial interference.

Abstract: A connecting device (10) for connecting an article to a carrier (14) is disclosed. The connecting device comprises a securing arrangement (12) for securing the connecting device to the article, and an attaching arrangement (26) for attaching the connecting device to the carrier. The attaching arrangement comprises a first projecting formation (28) for engaging the carrier, and a second projecting formation (32) for insertion through the carrier. When the second projecting formation is inserted through the carrier, a portion of the carrier can be received between the first and second projecting formations, thereby attaching the connecting device to the carrier.

Abstract: There is described a method of mounting inserts, comprising the following steps: (i) Application of an adhesive film on one of the faces of an inserts tray (223) covering a plurality of through-holes (241) and respective depressions (242); (ii) Insertion of an insert (230) in each through-hole (241) of the tray (223) from a face of the inserts tray (223) opposite that of the adhesive film, securing one surface of the insert (23) onto this adhesive film; (iii) Cutout of the adhesive film forming a plurality of single films (245) associated with the inserts (230). There is further described an insert mounting device (300), comprising a holding table (314) held by a supporting base (311), the insert mounting device (300) further comprising a rotating tray holder (312), cooperating with a cutting system (313).

Abstract: A securement device that includes a main support having a top surface, and a vertical support having a rear surface, front surface, inner edge, and outer edge. The vertical support's inner edge couples to the main support's top surface such that the main support is orthogonal to the vertical support. The securement device further includes an auxiliary support having a top surface, bottom surface, and inner edge, where the auxiliary support's inner edge couples to the vertical support's outer edge such that the auxiliary support is orthogonal to the vertical support. The main support has a first side-edge that extends out beyond a first side-edge of the vertical support to define a first side-top surface of the main support, and a second side-edge that extends out beyond a second side-edge of the vertical support to define a second side-top surface of the main support.

Abstract: The invention relates to a toggle fixing for fixing an article to a thin-walled building component. The toggle fixing comprises a crosspiece and a strip. The crosspiece is elongated, with an opening for receiving a screw. The strip for holding and positioning the crosspiece is joined to the crosspiece and extends along a strip longitudinal axis (L3). According to the invention, there is arranged on the strip an elongated grip element which projects from the strip at an angle with respect to the strip longitudinal axis (L3).

Abstract: Fasteners and related systems according to the invention include a collet body having a first part of a two part anti-rotation arrangement and a cylinder body having a second part of the two part anti-rotation arrangement wherein the collet body and the cylinder body are matably axially translatable with respect to each other, and have the same or similar outer diameter in some embodiments or not in others. A threaded member rotationally engages the collet body and compressively contacts the cylinder body during operation of the fastener to creating a clamping effect. Rotational interference between the first and second parts of the anti-rotation arrangement preferably occurs at sectional face portions of at least the collet body. Resistance to induced rotation of the cylinder body relative to a work piece rotation of the threaded member is preferably provided by a tool engaging a tool interface present on the cylinder body.

Abstract: A spring latching connector includes a housing having a bore therethrough, a piston slidably received in said bore, a circular groove formed in one of said bore and piston and a circular coil spring disposed in said groove for latching said piston and housing together. The groove is sized and shaped for controlling, in combination with a spring configuration, disconnect and connect forces of the spring latching connection.

Abstract: A sealant containment assembly for enclosing fasteners disposed within a confined space. The sealant containment assembly includes a first containment member and a second containment member that extend between two surfaces. The first and second containment members each include structure-engaging ends for engaging a structural member and the first and second containment members each include enclosure ends that connect the first and second containment members together to enclose the fasteners within a confined space defined by the first and second containment members, the first and second surfaces, the structural member and the connected enclosure ends. The assembly also includes at least one injection port disposed outside of the confined space but is in communication with at least one distribution port disposed inside the confined space for filling the confined space with sealant, thereby embedding the fasteners in sealant.

Abstract: Disclosed is a method for producing a vehicle wheel with a connection between a wheel rim and a wheel disc in which the wheel disc is connected to the wheel rim by means of at least one connecting element that is guided through a through-hole of the rim base and is joined in the wheel disc. After the joining of the connecting element in the wheel disc a portion of the head of the connecting element projects beyond the rim base on the outer side of the rim. Subsequently the head of the connecting element is at least partially removed.

Abstract: A metallic holding element for absorbing or introducing a torque in a plastic housing is presented, wherein the holding element in the holding area features a profile with three, four, or five main corners, which are connected to each other via straight or convex edges, preferably the edges are generally curved in a convex manner respectively through one or more obtuse-angled intermediate corners.

Abstract: A fastener for improved electrical contact with a composite structure and improved distribution of electric current to the composite structure. The fastener includes an elongated shaft having a first end with a head portion, a second end with a threaded portion, and a shaft body therebetween. At least one feed channel extends from an opening at the threaded portion, through the shaft body, and terminates proximal to the head portion. The shaft body radially expands upon pressure injection of a resin filler into the feed channel, when the fastener is installed in a corresponding fastener hole formed in the composite structure. Upon radially expanding, the outer surface of the shaft body makes contact with an inner hole surface of the corresponding fastener hole, resulting in the fastener providing electrical contact with the composite structure and providing distribution of electric current.

Abstract: A hanger (100) for a hanging item (1400) is provided. The hanger can define an aperture (102). The aperture can include a split rotated concave cardioid upper contour (104). The split rotated concave cardioid upper contour can include a first portion (105) and a second portion (106). The first portion and the second portion can be separated by an inverted convex cardioid (109). The inverted convex cardioid can be suspended into the aperture by two concave sidewalls (112,113). The aperture can include an intersecting concave lower contour (114) comprising a cusp (117).

Abstract: An assembly that is removably mountable to a wall, the assembly including a base plate and a mounting plate that is asymmetrically deflectably coupled to the base plate.

Abstract: A seal structure includes an insertion path which connects between a first opening and a second opening and through which a longitudinal member is inserted; and a seal part, formed at the intermediate section of the insertion path, which contacts with the outer circumference of the inserted longitudinal member. A discharge path is provided on a side wall section of the insertion path, and connects from the side surface of the side wall section to a section, of the insertion path, which is closer to an inflow opening through which flowing water is likely to flow than the seal part is to the inflow opening.

Abstract: A spherical bearing device includes a shaft member, a turnable body, and a bearing. The shaft member has a shaft body and a spherical body having a first engaging portion. The turnable body has a second engaging portion that is engaged with the first engaging portion in a first rotational direction about a first axis passing through a center of the spherical body, and allows other rotations. The bearing is provided with a first space and a second space. The first space accommodates the spherical body spherically slidably. The second space accommodates the turnable body such that the turnable body is turnable, and allows the shaft body to move.

Abstract: A ball pin connector includes a sleeve-like housing having a cavity with an elastic ball bearing. The elastic ball bearing is axially moveable between a lifted up position, and a lower locking position. Cooperating surface structures are provided on an inner wall of the housing and on an outer wall of the elastic ball bearing as a plurality of projecting surface structures arranged circumferentially distributed with gaps in between such that in a first rotational state of the elastic ball bearing within the housing the projecting surface structures are aligned to be able to come into engagement such that the elastic ball bearing is held in the lifted up position, and such that in a second rotational state of the elastic ball bearing the projecting surface structures of the elastic ball bearing are aligned with gaps of the projecting surface structures of the housing.

Abstract: A thermal spray powder is provided that contains, as constituent elements, a first element selected from W and Mo; a second element selected from Co, Ni, and Fe; a third element selected from C and B; and a fourth element selected from Al and Mg. The amount of the second element in the thermal spray powder is 20% by mole or greater. The mole ratio of the fourth element to the second element in the thermal spray powder is 0.05 or greater and 0.5 or less. The thermal spray powder has a crystal phase containing Co, Ni, or Fe; W; and C or a crystal phase containing Co, Ni, or Fe; W or Mo; and B. In an X-ray diffraction spectrum of the thermal spray powder, the peak intensity attributed to Co, Ni, or Fe is at most 0.1 times the largest peak intensity in the same X-ray diffraction spectrum.

Abstract: A thermal spray powder is provided that contains, as constituent elements, a first element selected from W and Mo; a second element selected from Co, Ni, and Fe; a third element selected from C and B; and a fourth element formed of Si. The amount of the second element in the thermal spray powder is 40% by mole or less. The mole ratio of the fourth element to the second element in the thermal spray powder is 0.002 or greater and 0.03 or less. The thermal spray powder has a crystal phase containing Co, Ni, or Fe; W; and C or a crystal phase containing Co, Ni, or Fe; W or Mo; and B. In an X-ray diffraction spectrum of the thermal spray powder, the peak intensity attributed to Co, Ni, or Fe is at most 0.1 times the largest peak intensity in the same X-ray diffraction spectrum.

Abstract: A resin coating layer in a sliding member has a surface shape indicated by a shape line. This shape line is divided into recessed sections and protruding sections by an average line for uneven areas. The inclination R of a straight line connecting the bottom of these recessed sections and the peak of these protruding sections is classified into Ra: R<0.02, Rb: 0.02?R?0.04, and Rc: 0.04<R. The sliding member comprises a resin coating layer fulfilling Ra+Rb?50%.

Abstract: A synthetic resin-made sliding bearing 1 include a synthetic resin-made upper casing 2, a synthetic resin-made lower casing 3, and a thrust sliding bearing piece 4 serving as a synthetic resin-made thrust sliding bearing interposed between the lower casing 3 and the upper casing 2 fitted over the lower casing 3.

Abstract: A turbocharger comprises: a rolling bearing provided with a plurality of rolling elements arranged between a raceway formed on an inner ring and a raceway formed on an outer ring; and a housing for holding the outer ring. The housing is provided with: a first dam for restricting the outflow of a lubricant through a first discharge passage for discharging the lubricant from the outer ring; and a second dam for restricting the outflow of the lubricant through a second discharge passage for discharging the lubricant from an opening formed so as to be in communication with an axially intermediate portion of the outer ring and with a peripheral wall of a space.

Abstract: Embodiments of the invention are directed to bearing assemblies configured to effectively provide heat dissipation for bearing elements, bearing apparatuses including such bearing assemblies, and methods of operating such bearing assemblies and apparatuses. In an embodiment, a bearing assembly includes a plurality of superhard bearing elements distributed about an axis. Each superhard bearing element of the plurality of superhard bearing elements has a superhard table including a superhard surface. The bearing assembly includes a support ring structure coupled to the plurality of superhard bearing elements. One or more of the superhard bearing elements includes a superhard table, which may improve heat transfer from such superhard bearing elements.

Abstract: Among other things, a bearing assembly comprising a hybrid coating is provided. A bearing assembly may comprise a substrate having a surface and a hybrid wear resistant coating over the surface of the substrate. In an example, the substrate may be an inner radial bearing and/or and outer radial bearing within a bearing assembly. The hybrid wear resistant coating may comprise a high wear resistant coating and a low wear resistant coating. The high wear resistant coating may comprise a wear resistant matrix over the surface and a set of wear resistant elements within the wear resistant matrix. In an example, wear elements within the set of wear elements may comprise tungsten carbide. The low wear resistant coating may be over a low wear area of the surface. In an example, the low wear resistant coating may be positioned between the first high wear resistant coating and a second high wear resistant coating.

Abstract: A synthetic resin retainer includes two annular members having opposed surfaces opposed to each other and each formed with a plurality of pockets which are circumferentially spaced apart from each other, and in which the balls are received. Each annular member includes axially concave, arc-shaped pocket wall portions defining the inner surfaces of the pockets, and flat plate-shaped coupling plate portions coupling together the adjacent pairs of the pocket wall portions. The coupling plate portions have axial thicknesses of 30% or less of the diameters of the balls, and the pocket wall portions have, at deepest points of the pockets, thicknesses of 10% or less of the diameters of the balls.

Abstract: A thrust roller bearing cage (11) of the present invention is included in a thrust roller bearing (20) and includes a plurality of pockets (21) accommodating rollers (13). The thrust roller bearing cage (11) includes: a first cylindrical portion (36) extending in a direction of a rotation axis (12); a first disc portion (31) continuous with the first cylindrical portion (36) and extending in a radially outward direction; and a second cylindrical portion (37) continuous with the first disc portion (31) and extending in the direction of the rotation axis (12). The first cylindrical portion (36), the first disc portion (31), and the second cylindrical portion (37) are formed in an area located radially inside the pockets (21). The height (H36) of the first cylindrical portion (36) in the direction of the rotation axis is smaller than the height (H37) of the second cylindrical portion (37) in the direction of the rotation axis.

Abstract: A retainer is rotationally driven about a axis of a ball bearing, and convex areas having pockets provided therein along a ball pitch circle of the retainer and concave areas between adjacent pockets is detected by a sensor. Grease is discharged according to phases of the convex areas and concave areas in the rotationally driven retainer from a dispenser having grease discharge ports arranged to face an annular space.

Abstract: A plurality of balls inserted in the gap space between an outer ring raceway surface and an inner ring raceway surface are arranged at equally spaced intervals in a circumferential direction. The procedure of this ball arranging method for a ball bearing includes a ball holding step of holding any ball in the gap space by a ball holding mechanism provided at a tip of a robot arm and a ball moving step of moving the ball held by the ball holding mechanism along a pitch circle, and these steps are repeatedly performed for the plurality of balls based on a control program. Accordingly, the plurality of balls are arranged at equally spaced intervals on the pitch circle.

Abstract: An input arrangement for a drive axle system and a drive axle system are provided. The input arrangement comprises a splined sleeve and an input shaft. The splined sleeve has a first end drivingly engaged with a portion of a driveshaft and a second end which defines a splined recess. The input shaft has a first splined portion on an end of the input shaft. The first splined portion is complimentary to and axially slidably engageable with the splined recess of the splined sleeve. The input arrangement for a drive axle drive system eliminates a need for a companion flange, reduces a weight of the drive axle system, and reduces noise, vibration and harshness.

Abstract: A friction clutch assembly includes a friction clutch having at least two coupling elements coupled to each other and disposed axially movable with respect to each other. Immediately adjacent coupling elements are each assigned to two sides of a power path defined by the coupling of the at least two coupling elements. An intermediate element is provided on which the coupling elements of one side of the power path are held movably in an axial direction of the coupling elements. The intermediate element is switchable between a locked state and a free-running state. An actuator element opens and closes the friction clutch. In a free-running state, a free rotation of the held coupling elements with respect to the assigned side of the power path is permitted, and in a locked state the held coupling elements are blocked from free rotation.

Abstract: A clutch for a lift fan comprising at least one output shaft lug key positioned in a keyway of at least two output clutch plates and extending axially from one to the other of the two output clutch plates. The output shaft lug key couples the rotation of the output clutch plates to the rotation an output shaft and allows axial movement of the two output clutch plates relative the output shaft lug key. The output shaft has an outer radial surface and an oppositely disposed inner radial surface, and the inner surface of the output shaft lug key extends radially to the seat of the keyway.

Abstract: A clutch for a lift fan comprises at least one output shaft lug key positioned in a keyway of at least two output clutch plates and extending axially from one to the other of the two output clutch plates. The output shaft lug key couples the rotation of the output clutch plates to the rotation an output shaft and allows axial movement of the two output clutch plates relative the output shaft lug key. The width of an inner surface of the output shaft lug key varies along the axial length as a function of the proximity to a home axial position of each of the output clutch plates when in the disengaged position.

Abstract: An electromechanical brake is capable of quickly releasing braking force and improving braking performance of a vehicle even when a power source breaks down. The electromechanical brake includes a drive unit including: a nut member which is coupled to a piston and moves in an axial direction to allow the piston to move forward and backward; a spindle which is thread-coupled to the nut member and rotates to move the nut member in the axial direction; an electric motor which provides power for rotating the spindle; a friction member which rotates together with the spindle; and an elastic member which stores elastic energy by being deformed when the friction member rotates during the braking operation, and provides elastic restoring force as backward torque to the spindle through the friction member when the braking operation is released.

Abstract: A subassembly for an electromechanical brake actuator and electromechanical brake actuator comprising the subassembly, wherein the subassembly comprises a drive device for generating a torque and a gear mechanism for transmitting the torque, the gear mechanism comprising, one behind the other, a first, a second and a third gear stage. The second gear stage is configured as a planetary gear set.

Abstract: The invention relates to a method for applying sand to the inner radius of drum brake linings comprising the following steps: a) rolling a UV-curing adhesive onto the inner radius of a drum brake lining, b) applying a frictional grain, such as zircon sand, to the adhesive layer, c) removing the frictional grain not retained by the adhesive from the lining surface, and d) curing the coating by means of UV radiation.

Abstract: A vehicle spring for a spring system, includes a spring body (20) and is produced, in particular rolled, from a profiled bar (1) made of a flat steel bar, in particular spring steel, in a hot deformation process. The profiled bar (1) or the spring body (20) has at least one material recess (6) which is provided over the length of the profiled bar or the spring body at least in some regions. The cross-sectional shape of the profiled bar (1) can be the same over the entire length of the profiled bar, whereas the cross-sectional shape in the spring body (20) can vary over the length of the spring body.