A motor-driven trailer and towbar system includes a towbar having a vehicle side end configured to connect with the vehicle and a trailer side end configured to connect with a trailer coupling. The towbar is pivotably coupled to the trailer and configured to pivot along a pivoting path (P) between a lowered position (L) and a raised position (R) with respect to the trailer. At least one first sensor element is configured to detect a position of the towbar along the pivoting path (P). A control unit (TCU) is in communication with the at least one first sensor element and is configured to switch the system between an operating mode and a parking mode. The system is switched into the parking mode when the towbar is in a raised position (R) and is switched into the operating mode when the towbar is in a lowered position (L).

A sensor zeroing apparatus for a handlebar including a drop bar moveably coupled to a handlebar of a wheeled transport device, wherein the drop bar is moveable relative to the handlebar between a pressed position and rest position, a drop bar position sensor located on or adjacent the handlebar, a controller is operatively coupled to the drop bar position sensor and one or more sensors, wherein the one or more sensors are positioned on the handlebar and/or a wheeled transport device comprising the handlebar, wherein the controller is configured to a sensor zeroing process if the drop bar is determined to be in the rest position.

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.

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.

A wheel pack assembly includes a pack portion wearable by a user, a wheeled portion removably coupled to the pack portion, and a power assist system. The pack portion includes a first interfit element. The wheeled portion includes a frame, a second interfit element coupled to frame and configured to removably couple with the first interfit element of the pack portion, and a first wheel set coupled to the frame and disposed at a location spaced apart from a rear end of the wheeled portion. The power assist system includes a motor mechanically coupled to the first wheel set, at least one sensor coupled to the at least one of the first interfit element and the second interfit element, and a controller configured to operate the motor based on feedback from the at least one sensor.

A shopping cart is configured to roll along a supporting surface and includes a chassis, a basket, a rear leg, a rear wheel, and a rotational brake. The basket is supported above the chassis. The rear leg extends downwardly from the chassis. The rear wheel is rotatably coupled to the rear leg and is configured to rotate about a rotational axis. The rear wheel defines an outside perimeter configured to contact and roll along the supporting surface. A rotational brake is coupled to the rear leg and extending radially away from the rotational axis in a rearward and downward direction beyond an outside perimeter of the rear wheel. The rotational brake is configured to impede rotation of the chassis and the basket about the rotational axis.

A method and system for dealing with obstacles in an industrial truck during a driving operation. The surroundings of the industrial truck are detected on at least one side perpendicular to the locomotion direction using at least one sensor unit. A traveled path is detected using a routing unit. When an object is detected, its lateral distance and position relative to the path are stored. A respective admissible maximum steering angle to the stored objects is determined based on the stored lateral distances and a predetermined movement model of the industrial truck. The smallest steering angles is selected as a critical steering angle. The critical steering angle is compared with a current steering angle, and if the current steering angle is larger than the critical steering angle, a predetermined measure is triggered.

Stroller or stroller frame, comprising at least one motor, in particular an electric motor, for in particular assisted driving of the stroller or stroller frame, at least one pusher for pushing the stroller or stroller frame, at least one force sensor device for detecting a force-related variable, in particular a force or a force component which acts on the pusher, or a variable derived from this force or force component, for example a torque or a change over time of the force or force component, and at least one control unit which is configured to initiate a calibration of the force sensor device depending on a result of at least one detection of the force-related variable, in particular depending on the result of a plurality, of preferably at least 3, in particular successive, detections of the force-related variable.

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 cart-borne ultrasonic imaging system has a cart housing; a control panel or a support for a portable ultrasound unit; and an articulating arm assembly to which the control panel, or the support is connected. The articulating arm assembly has arms pivotally connected with a first joint rotatably mounted on the cart and a second joint rotatably mounted on the control panel, or the support. At least one of the arms includes a 4-bar linkage,

A locking mechanism restricts motion of the articulating arm assembly and comprises electromagnetic elements controllable to exert magnetic force on movable actuating elements. The moveable actuating elements have a friction mass with corresponding braking element to restrict rotation of the first joint and/or of the second joint and/or a locking member kinematically coupled with main damping member to restrict its movement and that of the 4-bar linkage.