An attachment for a vehicle wheel allows operation when the tire is flat. The attachment may include a main body which is circular or substantially annular when seen in an axial direction, a positioning device for positioning the attachment on a rim of the vehicle wheel, and a fastening device for fastening the attachment to the rim of the vehicle wheel. The fastening device may be adapted to be actuated independently of the positioning device.

The invention relates to an emergency wheel attachment (10) for a vehicle wheel (12), the emergency wheel attachment having a substantially annular mounting unit (18), which is used to mount the emergency wheel attachment to the vehicle wheel, and an annular tread unit (20), which in the operating state contacts a road, the mounting unit being provided with at least two retaining claws (22) which are designed to fasten the mounting unit to the rim (14) of the vehicle wheel by engaging behind the rim flange (26), at least one of the retaining claws being radially movable in order to change its distance from the center point of the mounting unit, the mounting unit having an annular actuating element (46) which is rotatable about an axis of rotation (A) coinciding with the vehicle wheel axis in the operating state of the emergency wheel attachment and forms part of a gear mechanism which converts a rotation of the actuating element (46) into a radial movement of the or all radially movable retaining claws (22), and the mounting unit (18) comprising a drive device which is coupled or can be coupled to the actuating element (46).

A wheel hub assembly assembly having a central axis (X) and covers therefore. An outer ring provided with a tubular mounting portion, and a cover having a keying portion which is inserted inside the tubular mounting portion. The cover is made of plastic material, the keying portion comprises an annular seat made of plastic and a sealing element made of rubbery elastic material. The sealing element is defined by a solid of rotation mounted inside the annular seat over a whole of an axial length of the annular seat so as to project radially outside of the annular seat to make contact with the tubular mounting portion of the outer ring thereby sealingly closing the wheel hub assembly.

An attachment for a vehicle wheel allows the vehicle to be driven when the tire is flat. The attachment includes a main body having a mounting portion and a running surface portion. When ready to be mounted, the mounting portion has a closed circumference.

The invention relates to an attachment (14) for a vehicle wheel (1) for enabling a driving operation with restricted tyre functions and to a system comprising an attachment (14) and a rim (2) of a vehicle wheel (1).

Robotic devices that can be utilized on pipes of any material and of a variety of pipe diameters are provided. The robotic device utilizes a ducted fan to create the normal forces needed to adhere to any part of a pipe. The chassis of the device can be segmented to allow for application on various diameter pipes.

A protective covering is provided for covering an axle of a caster assembly including an exterior side that has an outer wall and an outer sidewall about a perimeter of and extending from the outer wall, and an interior side that has an inner wall recessed within the outer side and an inner sidewall extending from the inner sidewall. A main channel is defined within the recess of the interior side is configured to receive a leg of a bracket of the caster assembly and releasably retain the leg therein such that the protective covering is coupled to a side of the caster assembly. The exterior side preferably partially or entirely covers a hub of a wheel of the caster assembly and thereby reduces the likelihood of debris entering a cavity defined between the hub and the leg thereof.