A spring-force adjustable, height-adjustable industrial caster assembly including a mounting plate, a swivel housing that swivels relative to the mounting plate, and a spring assembly having components that are moveable relative to the swivel housing to controllably alter spring deflection and/or caster wheel height, which components can be adjusted by accessing the height-adjustable industrial caster assembly from above, eliminating the need to raise a pallet truck or other moveable assembly to which the caster assembly is coupled, away from the floor to be able to access and adjust the industrial caster assembly.

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.

In a method for monitoring an electromagnetically actuable brake, which has an energizable coil that interacts with a tractive electromagnet situated so as to be linearly movable, and a vehicle having an electromagnetically actuable brake, the current flowing through the coil is acquired, the acquired current value in particular being conveyed to an evaluation unit, the voltage applied at the coil is intermittently increased, and a relative position of the tractive electromagnet with respect to the coil is determined from the thereby induced current characteristic, in particular the characteristic of the current rise, it is particularly determined from the ascertained position whether the brake is in the applied state or in the released state, the tractive electromagnet in particular is arranged as a permanent magnet or has a permanent magnet.

The present disclosure relates to a robot cleaner, more particularly, to a robot cleaner that may rotate auxiliary wheels to run over a tilted route or an obstacle, when cannot run over a tilted route or an obstacle because main wheels are not contacting with the floor.

A system for sensing the angular position of a caster wheel includes a sensor mounted on a bearing which supports a shaft aligned with the rotational axis of the caster. A target on the shaft is detected by the sensor which generates signals indicative of the presence or absence of the target. The position of the target is coordinated with the position of the caster wheel such that the signals are indicative of the angular position of the caster wheel. The target may be a groove extending partially around the shaft and a remaining ungrooved portion of the shaft.

An anti-shimmy device (200A,200B,200C,200D,200E,200F,200G,200H) is adapted for a wheel (102A,102B,102C,102D,102E,102F,102G,102H) of a child carrier (100A,100B,100C,100D,100E,100F,100G,100H). The anti-shimmy device (200A,200B,200C,200D,200E,200F,200G,200H) includes a connecting base (210A,210B,210C,210D,210E,210F,210G,210H), a wheel base (220A,220B,220C,220D,220E,220F,220G,220H), a spindle component (230A,230B,230C,230D,230E,230F,230G,230H) and a restraining mechanism (240A,240B,240C,240D,240E,240F,240G,240H). The connecting base (210A,210B,210C,210D,210E,210F,210G,240H) is connected to a frame (101A,101B,101C,101D,101E,101G,101H) of the child carrier (100A,100B,100C,100D,100E,100F,100G,100H). The wheel base (220A,220B,220C,220D,220E,220F,220G,220H) is connected to the wheel (102A,102B,102C,102D,102E,102F,102G,102H) of the child carrier (100A,100B,100C,100D,100E,100F,100G,100H). The spindle component (230A,230B,230C,230D,230E,230F,230G,230H) is fixedly connected to one of the connecting base (210A,210B,210C,210D,210E,210F,210G,210H) and the wheel base (220A,220B,220C,220D,220E,220F,220G,220H) and rotatably connected to another one of the connecting base (210A,210B,210C,210D,210E,210F,210G,210H) and the wheel base (220A,220B,220C,220D,220E,220F,220G,220H). The restraining mechanism (240A,240B,240C,240D,240E,240F,240G,240H) is configured to restrain a shimmy movement of the wheel base (220A,220B,220C,220D,220E,220F,220G,220H) relative to the connecting base (210A,210B,210C,210D,210<