A walking-type electric carrier, comprising a handlebar, a driving mechanism, and a carrier frame that is connected to the driving mechanism; the handle bar comprises an armrest cross-bar, a vertical post that is vertically connected to the armrest cross-bar; the vertical post is connected to the driving mechanism; the vertical post is provided with a lifting handle, and the armrest cross-bar is provided with a detachable handle component; the handle component comprises a handle base and a handle body; the handle base and the handle body are detachably connected; the driving mechanism is controlled by the handle body to propel the carrier to move.

Examples provides one or more rolling pallet trays capable of interlocking together to form a modular rolling platform. A rolling pallet tray includes a rectangular base member with a top surface, a bottom surface, and a set of four sides. The top surface may have a lip extending upward along at least a portion of the circumference of the top surface. A set of rollers are pivotally mounted to the bottom surface. A floor-lock brake may be activated to stop movement of at least one roller to lock the rolling pallet tray in place. A set of linking mechanisms is attached to one or more of the sides for linking the individual rolling pallet tray to one or more other rolling pallet trays in a variety of different configurations. The linked rolling pallet trays in the modular rolling pallet tray pivot together as a single unit for greater stability.

A utility handcart for transporting equipment, materials, goods, supplies, animals, and people during or after a natural or man made disaster. The handcart includes a solid body and integrated body/frame design increasing durability to withstand constant use over long distances on rough terrain. An ergonomic placement of side-rails, adjustable height, and low rolling resistance through use of modern no-flat wheels with precision bearings, eases burdens and energy demands which are placed on humans when transporting various items. Materials are selected to reduce or eliminate regular service or maintenance. A kickstand aids the loading and unloading of the handcart, and positions the handcart ready for use. A ratcheting uphill assist prevents rolling backwards. The handcart may be assembled or disassembled without tools and components compactly arranged for storing and transporting.

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.

Self-propelling trolley assembly (100), comprising a battery (156); at least one wheel (111,112) which is driven by an electric motor (151,152;1), which electric motor is powered by said battery; a rotation position or velocity sensor (9) arranged to sense a rotation position or rotation velocity of at least one trolley wheel (111,112); a user interface (153); and a control unit (150) arranged to regulate the electric motor based upon input from said user interface so as to affect a rotation of said wheel according to particular drive patterns. The invention is characterised in that the control unit is arranged to implement at least a feedback assisted propulsion drive pattern, based upon information read from said position or velocity sensor; a free-wheeling drive pattern; and a rocking drive pattern, in that all of said drive patterns are implemented using different drive voltage patterns to said electric motor, and in that the electric motor is of a type in which the stator (2) comprises a number of stator (2) poles (7) which is not an integer multiple of a corresponding number of rotor (3) poles and in which the stator poles are subdivided into at least three magnetically and electrically identical subsets (8) that are mounted one after the other around the angular direction of the electric motor.

Examples of systems and methods for locating movable objects such as carts (e.g., shopping carts) are disclosed. Such systems and methods can use dead reckoning techniques to estimate the current position of the movable object. Various techniques for improving accuracy of position estimates are disclosed, including compensation for various error sources involving the use of magnetometer and accelerometer, and using vibration analysis to derive wheel rotation rates. Various techniques utilize characteristics of the operating environment in conjunction with or in lieu of dead reckoning techniques, including characteristic of environment such as ground texture, availability of signals from radio frequency (RF) transmitters including precision fix sources. Navigation techniques can include navigation history and backtracking, motion direction detection for dual swivel casters, use of gyroscopes, determining cart weight, multi-level navigation, multi-level magnetic measurements, use of lighting signatures, use of multiple navigation systems, or hard/soft iron compensation for different cart configurations.

Some embodiments include a utility cart. In some embodiments, the utility cart includes an insulated cold storage compartment; a dry storage compartment, the dry storage compartment configured to retract-ably extend horizontally; a base and front and rear wheels connected to the base.

An electric push cart includes a motor; a drive wheel that is rotationally driven by the motor; a cart frame that rotatably supports the drive wheel and includes left and right handles for a user to hold; a controller that drives the motor and issues a warning. The controller issues a warning when a motor-stop condition is fulfilled as a result of an increase in load on the motor when driving the motor and stops the drive of the motor after a given time has elapsed.

Devices, assemblies, systems, and methods are disclosed for stabilizing a cart. An example cart is a surgical cart having a robotic arm thereon. A stabilizer system may be part of or used with the cart to stabilize the cart at a location. The stabilizer system may include a stabilizer and an actuator. The stabilizer may have a foot and a biaser configured to bias the foot to a retracted position and contribute to an amount of force applied to a floor supporting the cart when the foot is in a deployed position. The actuator acts on the stabilizer to overcome a bias force biasing the stabilizer to the retracted position and cause feet of the stabilizer to contact the floor. Once the feet of the stabilizer contact the floor, a spring of the biaser causes the foot to apply a predetermined force amount to the floor.

Some embodiments include a utility cart. In some embodiments, the utility cart includes an insulated cold storage compartment; a dry storage compartment, the dry storage compartment configured to retract-ably extend horizontally; a base and front and rear wheels connected to the base.