The present invention relates to a novel design for quick tyre change in rear dual wheel assembly in a heavy transport vehicle. The invention provides a safe design that comprises a two-piece segmented saddle lock ring retained in position by an endless ring. A self-locking taper provided on the inside of endless ring can be pressed against the taper provided on the two-piece segmented saddle lock ring. The endless ring retaining the two-piece segmented saddle lock rings due to wedge action of self-locking taper cannot move from its position until an external force is applied on the endless ring towards the direction of the tyre position. The endless ring acts as a hood over the two-piece segmented saddle lock rings and prevents any loose parts flying off the rim during the tyre burst. Further in this safe design both inboard and outboard rim tyre support components are identical as both rims are of same diameter.

A wheel cover unit for rear wheels of trucks or buses comprises: a wheel cover, two bearing members and a cover. The wheel cover is provided with an inner concave portion having a central hole. The inner edge of the central hole is vertically and backwardly provided with a hole ring having corresponding two pairs of slots, and each slot extends to the central hole with a lock sheet. Each bearing member is provided with a connecting rod and an engaging rod. The connecting rod is formed with a connecting portion for passing through the bolts of the wheel rim. The engaging rod is formed with two connecting pieces. Each connecting piece is locked with the lock sheet via a screwed element, so as to assemble the wheel cover to the rear wheel of the truck or bus.

The present invention concerns a wheel construction as well as a method for making such a wheel construction for e.g. a construction or agricultural machine, such as a tractor, wherein the wheel construction at least includes a wheel rim made up of a rim ring for mounting a first tire and further includes a hub plate which at its outer periphery is fixed to the rim ring at a distance X1 from an annular edge thereof, and extending internally in the first rim ring between the rim ring and the central axis of the first wheel rim (rotary axis of the wheel rim), the first hub plate at an inner periphery including a number of holes and a contact face for mechanical and detachable fixing to either a central hub plate or directly to a hub of a vehicle.

The present invention concerns a wheel construction as well as a method for making such a wheel construction for e.g. a construction or agricultural machine, such as a tractor, wherein the wheel construction at least includes a wheel rim made up of a rim ring for mounting a first tire and further includes a hub plate which at its outer periphery is fixed to the rim ring at a distance X1 from an annular edge thereof, and extending internally in the first rim ring between the rim ring and the central axis of the first wheel rim (rotary axis of the wheel rim), the first hub plate at an inner periphery including a number of holes and a contact face for mechanical and detachable fixing to either a central hub plate or directly to a hub of a vehicle.

A heavy goods vehicle (10) having a vehicle frame (12) and at least one driving axis (A), which has on either longitudinal side (10a) of the vehicle (10) a bogie (22) comprising a wheel assembly (14), each wheel assembly (14) comprising at least two wheels arranged symmetrically in relation to a central axis (S), and a wheel suspension (18) by means of which said wheel assembly is fastened to a rotary plate (28) of the bogie (22), this rotary plate (28) being mounted on a rotary bearing (24) of the bogie (22) which is engaged with the vehicle frame (12) so as to be rotatable about a steering swivel axis (X). According to the invention, the rotary bearing (24) of the bogie (22) can be adjusted in the width direction (B) of the vehicle relative to the vehicle frame (12) and can be detachably connected to the vehicle frame (12) in an operationally stable manner.

An automatic cleaner is provided. The automatic cleaner may include a main body, and a wheel assembly disposed in the main body to allow the main body to move. The wheel assembly may include a drive, a first wheel rotated by a power of the drive, and a second wheel rotated by the power of the drive. The second wheel may include a plurality of contact protrusions on an outer circumferential surface thereof.

An automatic cleaner is provided. The automatic cleaner may include a main body, and a wheel assembly disposed in the main body to allow the main body to move. The wheel assembly may include a drive, a first wheel rotated by a power of the drive, and a second wheel rotated by the power of the drive. The second wheel may include a plurality of contact protrusions on an outer circumferential surface thereof.

An air maintenance tire system and method in accordance with the present invention includes an air pumping mechanism configured to maintain air pressure within a first tire and a second tire in a dual tire arrangement. The system includes a control valve assembly attached to an elongate valve stem projecting from a rim of a first tandem tire, and a one-way valve carrying connecting tube from a sidewall air pumping passageway within a sidewall of the first tire. The control valve assembly further includes first and second outlet tubes connected to the elongate valve stem to selectively pass pressurized air into the tire cavities of both tandem mounted tires on an as-needed basis.

An air maintenance tire system and method in accordance with the present invention includes an air pumping mechanism configured to maintain air pressure within a first tire and a second tire in a dual tire arrangement. The system includes a control valve assembly attached to an elongate valve stem projecting from a rim of a first tandem tire, and a one-way valve carrying connecting tube from a sidewall air pumping passageway within a sidewall of the first tire. The control valve assembly further includes first and second outlet tubes connected to the elongate valve stem to selectively pass pressurized air into the tire cavities of both tandem mounted tires on an as-needed basis.

Wheel assemblies and strollers comprising wheel assemblies are provided. The wheel assembly can comprise a standard wheel and a modular wheel, where the standard wheel has a first diameter that is greater than the diameter of the modular wheel. The modular wheel can be fixedly or removably attached to the standard wheel. The stroller can comprise at least one rear wheel assembly located proximate to a rear of the base. The stroller can also comprise at last one front wheel assembly located proximate to a front of the base. The stroller can also comprise a pulling and/or steering mechanism.