Wheel assembly (200) a self-propelling trolley (100), comprising a wheel (111,112); an electric motor (151,152) arranged to perform a rocking drive pattern; an electric connector (220), arranged to connect the motor (151,152) to a battery (156); and a mechanical brake (230) activatable so that a rotational movement of the wheel (111,112) is limited, The invention is characterised in that the mechanical brake (230) is arranged so that, in an engaged state, the wheel (111,112) can turn freely in relation to the trolley (100) across a ground distance of between 5 and 20 cm between a first rotary limit position and a second rotary limit position. The movement limitation is provided by several elongated concentric tracks interacting with a pin.

A caster wheel brake system for carts and other wheeled articles is operable to secure caster wheels against rolling rotation along their horizontal rotation axes. The system includes a pivotable parking brake lever, an actuator arm, and a torque shaft extending between the brake lever and actuator arm. The brake lever includes a distal end portion for selectively engaging a caster wheel, a proximal end portion opposite the distal end portion, and a pivot coupling, the latter being pivotably secured to the cart or wheeled article. An actuator arm extends outwardly from a distal end portion of the torque shaft, with the actuator arm slidably engaging the proximal end portion of the brake lever. The torque shaft and the actuator arm are rotatable together to urge the brake lever toward the braking or non-braking position

Disclosed is a braking mechanism for locking a wheel of a baby carriage. The braking mechanism includes a driving member and a locking member. The driving member is pivotally connected to a wheel seat of a frame of the baby carriage, a guiding opening is arranged in the wheel seat, an engaging part is arranged on a side surface of a hub of the wheel, a driving slot is arranged in the driving member, one end of the locking member is slidably arranged in the driving slot, and another end of the locking member is configured to slidably pass through the guiding opening, so that when the driving member rotates, the driving member drives the locking member to engage with the engaging part or disengage from the engaging part. In addition, the present invention further discloses a baby carriage.

A cart has a folded configuration and a deployed configuration. The cart includes two side frames arranged opposite to each other; and a plurality of support members connected between the two side frames. Each side frame includes a vertical synchronization rod with a front foot assembly and a rear foot assembly arranged on two sides of the vertical synchronization rod. The front foot assembly includes a front foot rod with an upper front oscillating rod and a lower front oscillating rod hinged between the vertical synchronization rod and the front foot rod. A bottom of the front foot rod is hinged to a front wheel. The rear foot assembly includes a rear foot rod with an upper rear oscillating rod and a lower rear oscillating rod hinged between the vertical synchronization rod and the rear foot rod. A bottom of the rear foot rod is hinged to a rear wheel.

A braking mechanism for a hand truck or dolly that, when installed on the hand truck, slows the movement of the hand truck when the hand truck is tilted rearwardly. The more the hand truck is tilted rearwardly, the greater the braking force applied by the braking mechanism against the wheels.

A robotic surgery cart has a pair of rear wheel assemblies and a pair of front wheel assemblies. A brake assembly for the robotic surgery cart includes a gearbox interposed between and connected to the pair of rear wheel assemblies by rotatable shafts. Elongate actuators extend between and interconnect the rotatable shafts and brake mechanisms for the front wheel assemblies. A pedal lever is rotatably coupled to the gearbox and can rotate clockwise by pressing one portion of the pedal lever and can rotate counterclockwise by pressing another portion of the pedal lever. Rotation of the pedal lever causes the gearbox to rotate the rotatable shafts to substantially lock the pair of rear wheel assemblies, and substantially simultaneously causes a translation of the elongate actuators to actuate the brake mechanisms of the front wheel assemblies, such that the wheels of the front and rear wheel assemblies brake substantially simultaneously.

A chair caddie, comprises a central hub and four arms. Each of the four arms is coupled to and extends outwardly from the central hub and is adapted to support a chair leg. Each arm is supported by a surface-engaging roller. The surface-engaging rollers cooperate to elevate the arms and the central hub above a planar surface engaged by the surface-engaging rollers. Each arm carries a chair foot receptacle adapted to receive and support a chair foot, and each roller is positioned inboard of the chair foot receptacle on its respective arm. The chair foot receptacles define a notional chair footprint circumscribing the chair foot receptacles, and the surface-engaging rollers have centers of rotation that are inside the chair footprint.

A foldable shopping cart is disclosed herein. The cart includes a folding frame that supports a fabric container in a basket-like configuration. Additionally, the cart frame includes four wheels of which, the two front wheels are swiveling castor-type wheels and the two rear wheels are fixed and include a braking system. The braking system consists of a friction rod that presses against the wheel via a spring which is connected to a trigger-like mechanism mounted to a foldable bar located between the rear wheels. The cart includes two posts that extend diagonally upward and proximally are vertically adjustable.

A robotic surgery cart has a pair of rear wheel assemblies and a pair of front wheel assemblies. A brake assembly for the robotic surgery cart includes a gearbox interposed between and connected to the pair of rear wheel assemblies by rotatable shafts. Elongate actuators extend between and interconnect the rotatable shafts and brake mechanisms for the front wheel assemblies. A pedal lever is rotatably coupled to the gearbox and can rotate clockwise by pressing one portion of the pedal lever and can rotate counterclockwise by pressing another portion of the pedal lever. Rotation of the pedal lever causes the gearbox to rotate the rotatable shafts to substantially lock the pair of rear wheel assemblies, and substantially simultaneously causes a translation of the elongate actuators to actuate the brake mechanisms of the front wheel assemblies, such that the wheels of the front and rear wheel assemblies brake substantially simultaneously.

A roller component and trolley. The trolley component includes the positioning seat, braking part, and roller that are respectively installed on the guiding shaft. The end of the shaft ring is cam surface, putting or relieving pressured to the end of the rollers when bring rotated, forming the braking structure; the trolley includes front bar, rear bar, bottom bar, handle bar, and flexible bag. The roller components are installed on the two sides of the guiding shaft under the rear bar, providing support and facilitating braking of the trolley.