A movable lifting device has a lifting and fixing device (10) and a moving device (20). One end of the lifting and fixing device is connected to the moving device, and the other end thereof is connected to a cargo to be shifted (30). The free rotation of the lifting and fixing device converts rotary motion into linear motion for lifting the cargo to-be-shifted. The movable lifting device has a simple and flexible structure, is easy to operate, and combines the functions of shifting and lifting. It can be operated anytime and anywhere, and is suitable for a wide range of applications. The movable lifting device reduces labor intensity, saves manpower and material resources, is cheaper to build, and easy to operate.

Luggage with retractable wheels is described, specifically pivoting caster wheels. A telescopic handle is provided on the luggage bag which actuates the retractable wheels using a unique linear mechanism. Pushing the telescopic handle down to the stowed position allows the wheels to retract inside the bag, making the bag easier to stow in the restricted storage space available in the passenger cabin of a commercial aircraft Pulling the telescopic handle out into an extended configuration allows the wheels to deploy into an operable position.

Disclosed is a level castor including: a castor main body which has a socket shape having an opening, and in which a wheel contacting the ground is mounted therein and rotatably hinge-coupled to one portion of the lower side thereof; a connection frame which is rotatably connected to the castor main body and fixedly mounted to a weight disposed thereabove, thereby connecting the castor main body to the weight such that the castor main body can rotate with respect to the weight; a support body provided to the castor main body through the opening in a retractable manner so as to contact the ground; and an adjustment unit which is provided in an inner accommodation space of the castor main body, and which retracts the support body through a rotation operation of a rotation handle.

A rolling device for a device that is to be moved along a surface is described. The rolling device comprises a cylinder with an opening at one end and a piston that is arranged reciprocally movably in the cylinder such that the piston can be moved between an upper position in the cylinder and a lower position in the cylinder. The piston comprises a rolling element that is arranged in a first end portion of the piston that faces the cylinder opening and that rolls on the surface when the device is to be moved. The rolling device further comprises an actuator system for movement of the piston between the upper position and the lower position in the cylinder.

A caster assembly for use with varies structures, including ladders and elevated platforms is provided. In one embodiment, the caster assembly includes a first wheel coupled with a first bracket and configured to rotate about a first axis relative to the first bracket. A shaft is coupled to the first bracket as well as to a second bracket. The first bracket is rotatable relative to the second bracket about a second axis, which may be coincident with, or parallel to, an axis of the shaft. A third bracket is coupled with the shaft and is rotatable about the second axis, the third bracket being selectively locked in at least two positions relative to the second bracket. A second wheel is coupled with the third bracket, the second wheel being rotatable relative to the third bracket about a third axis.

A caster apparatus is provided. In one embodiment, there is provided a caster apparatus including a caster wheel and a first driving wheel disposed on a first side of the caster wheel. The first driving wheel is configured to be driven by a first motor. A second driving wheel is disposed on a second side opposite to the first side of the caster wheel. The second driving wheel is configured to be driven by a second motor different from the first motor. A first actuator is configured to move the first driving wheel in a vertical direction to a ground according to a curvature of the ground. A second actuator is configured to move the second driving wheel in a vertical direction to the ground according to a curvature of the ground, wherein the first and second driving wheels are configured to steer the caster wheel.

An adjustable caster assembly includes a body having a top surface and a base, and an opening within the base. A wheel is connected to the body, where the wheel is configured to extend beyond the base of the body to engage a supporting surface. A foot is positioned within the opening in the base and configured to move between an expanded position and a contracted position. The foot may be actuated by an actuation shaft that engages a gear. The actuation shaft may be movable between an engaged position and a disengaged position.

A telescoping wheel assembly includes a base body, a wheel set and an elastic member. The base body includes a receiving groove. The wheel set is connected to the receiving groove and selectively positioned at an outward position or an inward position relative to the receiving groove. The wheel set includes a wheel axle and a wheel body. The wheel body is connected to an outside of the wheel axle. The elastic member is disposed in the receiving groove and abutted against the base body and the wheel set. When the wheel set is positioned at the outward position, the elastic member provides a buffering elastic force to the wheel set. When the wheel set is positioned at the inward position, the elastic member provides a pushing elastic force to the wheel set.

Several solutions are described for making it easier to move a surgical robotics patient table, either from rest or to turn it. The table has a base, a support, and a table top on which the patient is supported. A number of casters are mounted to a body of the base. In one case, controllable jacks lift the body to release the casters thereby allowing them to swivel to a desired orientation. In another case, a drive assembly is rotatably coupled to the body of the base and includes an electric drive motor and a drive wheel to drive the table across the floor. Other aspects are also described and claimed.

A stabilizing device for a piece of furniture including a housing with a piston opening, and a piston element mounted movably within the housing and moveable at least partly out of the piston opening for engagement with a supporting surface. The stabilizing device further includes an actuator, including a motor, connected to the piston element for actuating a movement of the piston. A control unit connected to the actuator for control of the actuation of the piston element, and at least one first sensor capable of measuring the load on the motor. The at least one first sensor device is connected to the control unit such that the movement of the piston element can be controlled based on input from the first sensor.