A mobile component having a roller bearing unit, in particular a mobile component having a steering roller, a roller, in particular a drive roller, being rotationally braced in a pivot unit, which is supported via a pivot bearing on the frame of the mobile component, the axes of rotation of the two pivot bearings in particular being aligned perpendicularly with respect to each other, the axis of rotation of the pivot bearing for pivoting parallel to the direction of the normal of the normal of the driving surface of the mobile component touched by the roller, a drum brake being developed on the roller, the actuation of the drum brake being able to be brought about by an electromagnet, which is connected on the frame of the mobile component, the drum brake being able to be actuated by the electromagnet via a wedge gear.

Provided is an ultrasound diagnostic apparatus including a plurality of casters allowing the ultrasound diagnostic apparatus to be moved according to a control signal, a detection sensor configured to detect a motion of the ultrasound diagnostic apparatus, an input configured to receive a control command of the ultrasound diagnostic apparatus from a user, and a controller configured to determine whether a user desires to use the ultrasound diagnostic apparatus on the basis of at least one of the detected motion or the received control command, and upon determining that the user desires to use the ultrasound diagnostic apparatus, transmit a control signal for locking at least one of the plurality of casters.

The invention provides a caster having a wheel and a wheel lock assembly that is configured to lock the wheel against rotation about a first axis. The wheel lock assembly allows the caster to move between a locked configuration, in which the wheel is engaged by a detent of the wheel lock assembly, and an unlocked configuration, in which the detent is spaced from the wheel. In certain embodiments, the caster moves between its locked and unlocked configurations in response to rotation of a rotatable cam. Other embodiments provide a wheel lock assembly including a rotatable track wall, which comprises a generally cylindrical wall configured to rotate about a second axis. In such embodiments, the caster is configured such that the rotatable track wall rotates about the second axis when the caster moves between locked and unlocked configurations.

A running wheel for a patient positioning device (30) is provided. The running wheel has a wheel (1) and a receiving device (4) for rotatably receiving the wheel (1) around a first rotational axis (5), which is arranged centrally with respect to a circumference of the wheel (1). The wheel (1) has a wheel body (3), and multiple circumferential castors (7), each having a second rotational axis (8) arranged in a direction tangential to a circumference of the wheel (1), wherein the circumferential castors (7) form a bearing surface of the wheel (1).

Provided is an ultrasound diagnostic apparatus including a plurality of casters allowing the ultrasound diagnostic apparatus to be moved according to a control signal, a detection sensor configured to detect a motion of the ultrasound diagnostic apparatus, an input configured to receive a control command of the ultrasound diagnostic apparatus from a user, and a controller configured to determine whether a user desires to use the ultrasound diagnostic apparatus on the basis of at least one of the detected motion or the received control command, and upon determining that the user desires to use the ultrasound diagnostic apparatus, transmit a control signal for locking at least one of the plurality of casters.

A patient transport apparatus includes a base, a patient support deck, a plurality of wheels, a plurality of brakes, and an electro-mechanical braking system. The electro-mechanical braking system includes a linkage, a manual actuator, and an electrical braking assembly. The linkage is operatively coupled to the brakes to place the brakes in a braked state, a released state, or other state. The manual actuator moves the linkage manually to place the brakes in one of the states. The electrical braking assembly includes an actuator assembly that moves the linkage with electrical power to place the brakes in one of the states.

A support foot where the support foot main body is composed of a ground face, support slot and long groove. The support slot is situated on the opposite side of the grounded face and the mouth is upward-opening, and a support arm is situated above the support slot. The long groove is cut through the support arm and runs parallel to the axis of the support slot, and a rivet inserted through the long groove is used to attach the support foot to the rack. This invention consists of a support foot designed as a single unit. It is attached by a single rivet and can be folded either inward for storage or outward to form a support structure by means of the connection at the support slots.

A pressured braking wheel includes a wheel seat, an axle sleeve, a first wheel rim and a second wheel rim. The wheel seat has an accommodation space and a braking tenon. The axle sleeve is arranged in the accommodation space and sleeves a wheel axle. Inner sides of the first wheel rim and the second wheel rim are respectively annularly provided with first tenon grooves and second tenon grooves. The first wheel rim and the second wheel rim pivotally connect with the axle sleeve through the wheel axle. The first tenon groove and the second tenon groove are arranged under the braking tenon. When the wheel seat is pressed down, the wheel seat inserts the braking tenon into the first tenon groove and the second tenon groove, so as to prevent the first wheel rim and the second wheel rim from rotating with respect to the wheel seat.

A caster includes a caster unit and at least one braking unit. The caster unit includes a receptacle, a wheel shaft disposed through the receptacle, a wheel assembly sleeved on the wheel shaft and rotatable relative to the receptacle, and a spring assembly which acts on the receptacle and the wheel shaft. The receptacle is movable relative to the wheel assembly in a vertical direction. The braking unit includes a surrounding teeth structure formed on the wheel assembly and having a hardness ranging from 65 to 75 on a Shore D scale, and a braking piece mounted on the receptacle. The braking piece includes a braking surface in form of a curve surface having a hardness ranging from 40 to 46 on the Shore D scale to be engaged with the surrounding teeth structure to retard rotation of the wheel assembly.

An electrical brake mechanism for a caster can reliably brake a caster. A switch is mounted on a target to which a caster is attached and outputting an instruction signal to a brake device, a detector is provided on a rotating shaft of the cam and arranged in correspondence with each of positions of a plurality of cam surfaces, a sensor is provided for detecting abutment between each of the cam surfaces and an operation shaft by the detector, a motor is provided for rotating by an input of the switch and for stopping if the sensor detects the position of the predetermined cam surface, and a gear train is provided for transmitting rotation of the motor to the rotating shaft of the cam.