A spacing bar of a wheelchair frame comprising an elongated structural body having a pair of opposite ends, each of the opposite ends having a C-shaped clamp configured for being clamped to respective lateral frame members of the wheelchair frame, wherein the elongated structural body and the C-shaped clamps are integrally made of a monocoque composite construction, and a tightening assembly for each of the C-shaped clamps, the tightening assemblies being arranged in the spacing bar to loosen and tighten the C- shaped clamps to the respective lateral frame members. A wheelchair frame comprising: a pair of lateral frame members configured to support at least a seat, and front and rear wheel units, the lateral frame members each having an elongated frame portion in a seating zone of the wheelchair frame, and a spacing bar having an elongated structural body and a pair of opposite ends, each of the opposite ends having a connector configured for being clamped to a respective one of the lateral frame member of the wheelchair frame, wherein each of the connectors forms a joint with the respective one of the elongated frame portions constraining the spacing bar to movement of the spacing bar axially along the pair of the elongated frame portion, a tightening assembly for each of the connectors, the tightening assemblies being arranged in the spacing bar to loosen and tighten the connectors to block or allow movement of the spacing bar along the pair of the lateral frame members

A caster assembly for a wheelchair comprises a stem having a frame clamp at a first end and a fork clamp at a second end, the frame clamp configured to form a frame joint with at least one rotational degree of freedom with a frame portion of the wheelchair, a tightening of the frame clamp securing the stem to the frame portion, the frame joint having a frame rotational axis. A fork unit has a fork portion and a caster rotatably supported by the fork portion, the fork unit having swivel mechanism, and a joint portion forming a rotational joint with the fork clamp of the stem, a tightening of the fork clamp blocking rotation of the rotational joint, the rotational joint having a fork rotational axis. A vector of the fork rotational axis is normal to a fork rotational plane in which the fork rotates relative to the stem, and further wherein the frame rotational axis is not parallel to the fork rotational plane.

A spindle sleeve and washer for adjusting the camber, toe, or thrust angle of a vehicle wheel to a desired predetermined angle which allows for use of existing hub and spindle assembly without permanent modification to the vehicle.

The present utility model refers to a rolling device and, more particularly, an improved multi-directional ball caster-type device having an increased slope, which means a smaller angular slope level, or a more acute inclination angle between the central vertical axis of the device and the surface upon which it rolls. The slope, or inclination angle of the present improved device is from 62 to 50, or less. As the inclinations angle can be more acute, the object supported on the rolling system, e.g. a luggage case, can be more sloped without having friction between the main ball involving structure and the ground.

Wheel suspension comprising a frame suitable for connection to a body of a vehicle and comprising a first and second wheel which together define a track width, and wherein the first wheel is connected to the frame via a first set of actuators and wherein the second wheel is connected to the frame via a second set of actuators such that by means of operating the actuators the track width is adjustable between a narrow track, characterized in that the first set of actuators overlaps in the transverse direction of the vehicle with the second set of actuators.

An apparatus for adjusting the toe and camber of a wheel including a spindle, a spindle sleeve, the spindle disposed inside the spindle sleeve, a spindle sleeve bolt, disposed through the spindle through hole and the spindle sleeve through hole, an alignment cam, including an eccentric cam through hole, a cam bolt head, a spindle cup, the eccentric cam through hole offset from an alignment cam constant center of the alignment cam, and a spindle bolt, securely connecting the alignment cam to the spindle. The alignment cam is connected to a first end of the spindle, with the alignment cam and the spindle disposed inside the spindle sleeve.

An apparatus and method detach a crawler having a magnetic wheel from a surface of a structure using a wheel tilting wire mechanism. A portion of the magnetic wheel magnetically adheres to the surface of the structure. The apparatus includes a platform engaging the crawler. Movement of the wire by the platform pivots or tilts an axle of the magnetic wheel to lift a portion of the wheel away from the surface of the structure, thereby reducing the magnetic adhesion of the wheel to the surface of the structure. Based on the reduced magnetic adhesion, the platform detaches the magnetic wheel from the surface of the structure, and detaches the crawler from the platform. The method implements operation of the apparatus.

An axle arrangement having an outer bevel gear arrangement and an inner bevel gear arrangement. Each bevel gear arrangement allowing large rotation of the axle shaft around a respective swing axis through the bevel gear arrangement, perpendicular to the axle shaft to permit the axle to swing through large angles with negligible impact on transmission of torque. The axle shaft having multiple portions connected in series between the bevel gear arrangements. Between two of the shaft portions is a slidable connection. Between two of the shaft portions is an inner rotatable coupling and between two of the shaft portions is an outer rotatable coupling. Both couplings are stabilised by hinged casings located relative to the bevel gear arrangements with a hinge axis through the rotatable coupling. Each hinge axis is perpendicular to the primary axis of the shaft portion(s) between the rotatable couplings and perpendicular to the respective swing axis.

An axle arrangement having an outer bevel gear arrangement and an inner bevel gear arrangement. Each bevel gear arrangement allowing large rotation of the axle shaft around a respective swing axis through the bevel gear arrangement, perpendicular to the axle shaft to permit the axle to swing through large angles with negligible impact on transmission of torque. The axle shaft having multiple portions connected in series between the bevel gear arrangements. Between two of the shaft portions is a slidable connection. Between two of the shaft portions is an inner rotatable coupling and between two of the shaft portions is an outer rotatable coupling. Both couplings are stabilised by hinged casings located relative to the bevel gear arrangements with a hinge axis through the rotatable coupling. Each hinge axis is perpendicular to the primary axis of the shaft portion(s) between the rotatable couplings and perpendicular to the respective swing axis.