A spring device (100) for a wheel suspension (200) for a vehicle (300) is described. The spring device (100) comprises an elongated elastic torsion device (102) configured to rotate about a central longitudinal axis (R) at a load (L). The torsion device (102) comprises elongated elastic elements (130) that comprise an internal cavity (132).

An independent suspension assembly for a vehicle, said assembly including: a suspension arm pivotally attachable at a first end to a point fast with the vehicle; a support member for rigid attachment of a lower end of a resilient member at a remote end of the suspension arm the resilient member having a remote side and a near side, the remote side being further from said point than the near side; and a pivoting mounting assembly attachable to the vehicle for attachment of an upper end of the resilient member; wherein pivoting of the suspension arm causes the resilient member to elicit pivoting of the pivoting assembly for minimizing a difference in lengthening between the remote and near sides of the resilient member.

An apparatus and methods are provided for a rear portal trailing arm assembly for a vehicle rear suspension. The trailing arm assembly comprises a CV joint hub for coupling with a transaxle and a wheel hub for coupling with a rear wheel. A gear transfer case extends rearward from the CV joint hub to an axle case and functions similarly to a rear trailing arm. Forward mounts facilitate coupling the gear transfer case to the chassis such that the trailing arm assembly pivots vertically with respect to the chassis. A rearward mount facilitates coupling a strut with the gear transfer case to control the vertical motion of the rear wheel. Multiple gear assemblies are meshed within the gear transfer case. An axle is coupled with the meshed gear assemblies and housed within the axle case, such that torque applied to the CV joint hub is communicated to the wheel hub.

A suspension axle for a farm equipment is provided. The suspension axle includes an axle beam having two ends. The two ends are configured to be simply supported to the farm equipment. The suspension axle also includes a first mounting arm coupled to the axle beam between the two ends and extending outwardly from the axle beam. The suspension axle also includes a first mounting bracket pivotably coupled to the first mounting arm at a first horizontal pivot axis. The suspension axle also includes a first suspension member coupled to at least one of the axle beam and the first mounting arm.

A mobility vehicle may comprise a frame, a first pivot arm, a second pivot arm, and a suspension assembly. The first pivot arm may be coupled to the frame and coupled to a drive wheel. The second pivot arm may be coupled to the frame and coupled to a ground engaging caster wheel. The suspension assembly may be coupled to the frame. The suspension assembly may include a first spring assembly and a second spring assembly. The first spring assembly may be disposed about a first spring axis and coupled to the first pivot arm. The second spring assembly may be disposed about a second spring axis and coupled to the second pivot arm. The first spring axis and the second spring axis may be disposed relative to each other at an angle of no greater than about 150° when the mobility vehicle is operating on horizontal ground.

An apparatus for pivotally fixing a non-driven wheel assembly to a vehicle frame is disclosed. The apparatus provides a trough through which non-driven wheel assembly components can be passed and protected. In one embodiment, the trough is circular in shape and is fully enclosed by the apparatus. In other embodiments, the trough has various shapes and comprises retaining members to secure and protect non-driven wheel assembly components. A suspension system interface is provided that allows the apparatus to suspend the non-driven wheel assembly. Openings used to pivotally and rigidly fix a mounting plate, suspension system, pivotal axes, and fender assemblies are also disclosed and claimed herein.

A trailer frame including an axle section having two spaced longitudinal frame members connected by at least one cross member, the longitudinal frame members each having a first end and a second end; a rear section attachable to the axle section; and a dimple assemble joining the axle section to the rear section, the dimple assembly including a dimple pattern formed on each frame member of the axle assembly, the dimple pattern on the axle assembly defining a first dimple axis, and a dimple pattern formed on one end of the rear section and nestable within the dimple pattern formed on the axle section, the dimple pattern on the rear section defining a second dimple axis offset relative to the first dimple axis to create a camber between the axle section and the rear section when the first dimple is nested within the second dimple pattern.

A wheel suspension (1) for a wheel (23) of a vehicle, in particular the rear wheel of a utility vehicle, driven by an electric or pneumatic motor (2), having a swing arm (3) which is mounted pivotably around a pivot axis (7) on the vehicle in a first region (4) and is supported on the vehicle in a second region (8), wherein a third region (10) of the swing arm (3) carries a part of the motor (2) which is rotationally fixed in relation to the swing arm (3) in order to transmit a torque to the wheel using a rotating part of the motor (2).

A universal wishbone trailing arm and methods are provided for coupling a wheel to a vehicle chassis. The universal wishbone trailing arm comprises a wheel hub that fastenably receives the wheel. A cylindrical axle support supports one or more roller bearings whereby the wheel hub is rotatable. A first swing arm and a second swing arm extend forwardly from a joined swing arm. The cylindrical axle support is coupled to a rear of the joined swing arm. A first chassis mount hingedly couples the first swing arm to the vehicle chassis. A second chassis mount hingedly couples the second swing arm to an articulated mount which is configured to couple the second swing arm to the vehicle chassis. The articulated mount cooperates with the first second swing arms to change camber of the wheel, such that a tracking of the wheels remains substantially unchanged during traveling over rough terrain.

The invention relates to a load-carrying vehicle part with a first and a second wheel pair (10, 11), which are suspended in a respective bogie element (20) on each side of a frame member (14), a suspension (15) between each bogie element (20) and the frame member (14) on each side of the vehicle part to manipulate the frame member relative to the respective wheel pairs (10, 11), or support the frame member in a springing manner, each suspension (15) comprises a first and a second rocker arm (26A, 26B), wherein the first rocker arm is located in front of the second rocker arm viewed in the normal forward direction of driving of the vehicle part, that each rocker arm (26A, 26B) with its one end is pivotably in a joint (27, 27) in the frame member (14) and with its other end is pivotably in a joint (28, 28) in the bogie element (20) a first spring leg (25A) and a second spring leg (25B), wherein each spring leg with its one end (30) is articulately fastened to the frame member (14) and with its other end (31) is articulately fastened in a rocker arm (26A, 26B), a motion conversion arrangement (29) capable of converting a rotary motion in a joint (27, 28) for one of the rocker arms (26A, 26B) to a forward and backward translation motion.