A conductive caster wheel is adapted to be mounted on a cart The conductive caster wheel includes a caster hub adapted to be sleeved on a bearing of the cart, a wheel body sleeved on the caster hub, and a conductive plate disposed inside the caster hub and the wheel body. The conductive plate has an inner conductive section. and an outer conductive section. The inner conductive section is exposed from an inner surrounding surface of the caster hub, and is adapted to be electrically connected. to the bearing. The outer conductive section is electrically connected to the inner conductive section, is exposed from an outer surrounding surface of the wheel body, and is adapted to be in contact with a ground surface.

An autonomous mobile device may use a pair of main wheels and a caster assembly to provide mobility. The main wheels are driven by motors, providing steering and movement. Each main wheel may include a cover that conceals and protects a hub of the main wheel from the external environment. The covers may be held in place by elastomeric posts, allowing easy changeout. The caster assembly has a minimal overall height and a field replaceable caster wheel. The caster wheel may include a target that is detectable by a non-contact sensor to detect caster wheel rotation. The caster wheel may comprise an axle, caster wheel hub, and a pair of caster wheel endcaps on each end of the axle. A set of features on the caster wheel hub and each of the caster wheel endcaps provide a labyrinthian path that prevents debris from fouling around the axle.

An omnidirectional wheel includes a hub and a number of driven wheels. The hub defines a number of mounting grooves. Each mounting groove includes an axle provided therein. Each driven wheel includes a driven roller and a cover layer. Each of two ends of the driven roller defines a fixing hole. Each of the two holes receives the axle. The cover layer is sleeved on an outer side of the driven roller.

A caster wheel assembly for an outdoor power equipment machine includes a wheel mount and provides a double bell-shaped caster wheel including two bell-shaped halves, each bell-shaped half includes a central hub, a smooth transition portion, an outer circumferential rim, and a planar face. A ground contacting tread can be provided by the outer circumferential rims. A ground contacting tread can be provided by a resilient tread ring positioned between the two bell-shaped halves.

An autonomous floor cleaning robot includes a transport drive and control system arranged for autonomous movement of the robot over a floor for performing cleaning operations. The robot chassis carries a first cleaning zone comprising cleaning elements arranged to suction loose particulates up from the cleaning surface and a second cleaning zone comprising cleaning elements arranged to apply a cleaning fluid onto the surface and to thereafter collect the cleaning fluid up from the surface after it has been used to clean the surface. The robot chassis carries a supply of cleaning fluid and a waste container for storing waste materials collected up from the cleaning surface.

A castor with a brake pad is disclosed, wherein the fixing sections and the pressing sections of the brake pad press against the two wheel-side portions of the wheel body, so in addition to providing friction, it can also provide clamping function, as a result, the braking effect can be achieved more easily, and the braking force tends to be even. Furthermore, because the fixing sections and the pressing sections of the brake pad press against the two wheel-side portions instead of pressing against the center of the wheel body, so no extra resistance is generated, and there is no excess wear, thereby extending the service life of the wheel body.

An auxiliary drive device for a wheelchair has at least one freely pivotable electrically driven drive wheel and a coupling mechanism for coupling the auxiliary drive device to the wheelchair. The coupling mechanism includes a movable locking element which is movably supported in the coupling mechanism. The movable locking element can be in a locking position in which it causes locking in a positive-locking manner so that the auxiliary drive device is coupled to the wheelchair and, by operation of a handle, the locking element can be moved in a release position in which uncoupling of the auxiliary drive device from the wheelchair is possible.

An auxiliary drive device for a wheelchair has at least one freely pivotable electrically driven drive wheel and a coupling mechanism for coupling the auxiliary drive device to the wheelchair. The coupling mechanism includes a movable locking element which is movably supported in the coupling mechanism. The movable locking element can be in a locking position in which it causes locking in a positive-locking manner so that the auxiliary drive device is coupled to the wheelchair and, by operation of a handle, the locking element can be moved in a release position in which uncoupling of the auxiliary drive device from the wheelchair is possible.

An omnidirectional wheel includes a hub and a number of driven wheels. The hub defines a number of mounting grooves. Each mounting groove includes an axle provided therein. Each driven wheel includes a driven roller and a cover layer. Each of two ends of the driven roller defines a fixing hole. Each of the two holes receives the axle. The cover layer is sleeved on an outer side of the driven roller.

A conductive caster wheel is adapted to be mounted on a cart. The conductive caster wheel includes a caster hub adapted to be sleeved on a bearing of the cart, a wheel body sleeved on the caster hub, and a conductive plate disposed inside the caster hub and the wheel body. The conductive plate has an inner conductive section and an outer conductive section. The inner conductive section is exposed from an inner surrounding surface of the caster hub, and is adapted to be electrically connected to the bearing. The outer conductive section is electrically connected to the inner conductive section, is exposed from an outer surrounding surface of the wheel body, and is adapted to be in contact with a ground surface.