A trailer for a motor vehicle includes a bed, a trailer tongue, a tongue frame, and a plurality of swivel frames. The bed has a front end and a rear end, and is configured to receive a load to be transported by the trailer. The trailer tongue is configured to be rigidly coupled to a hitch, wherein the hitch is rigidly affixed to a motor vehicle. The tongue frame operable couples the trailer tongue to the bed proximate the front end in a laterally rigid manner, such that the bed is substantially inhibited from lateral movement with respect to the hitch. Each of the plurality of swivel frames is operably rotatably coupled to the bed, and includes at least one wheel rotatably attached thereto.

An autonomous floor cleaning robot includes a transport drive and control system arranged for autonomous movement of the robot over a floor for performing cleaning operations. The robot chassis carries a first cleaning zone comprising cleaning elements arranged to suction loose particulates up from the cleaning surface and a second cleaning zone comprising cleaning elements arraigned to apply a cleaning fluid onto the surface and to thereafter collect the cleaning fluid up from the surface after it has been used to clean the surface. The robot chassis carries a supply of cleaning fluid and a waste container for storing waste materials collected up from the cleaning surface.

A folding type collapsible wagon comprises a frame assembly, a tow bar assembly and wheels, wherein the tow bar assembly is arranged in front of the frame assembly, and each side frame comprises coplanar X-shaped cross tube assemblies. Each coplanar X-shaped cross tube assembly comprises a first oblique tube, two second oblique tubes and a hollow seat, wherein a first strip opening is formed in the middle of the hollow seat in the front-back direction, tube connectors are oppositely arranged at the front end and the rear end of the hollow seat in the vertical direction respectively, the first oblique tube penetrates through the first strip opening and is hinged to the middle of the first strip opening at the center through a hinge shaft, the two second oblique tubes are mounted in the tube connectors at the front end and the rear end of the hollow seat respectively, the two second oblique tubes are arranged in parallel and intersect with the first oblique tube in an X shape, and the first oblique tube, the two second oblique tubes and the hollow seat are all located on the same plane. The folding type collapsible wagon provided by the present disclosure is high in space utilization rate and attractive.

A folding type collapsible wagon comprises a frame assembly, a tow bar assembly and wheels, wherein the tow bar assembly is arranged in front of the frame assembly, and each side frame comprises coplanar X-shaped cross tube assemblies. Each coplanar X-shaped cross tube assembly comprises a first oblique tube, two second oblique tubes and a hollow seat, wherein a first strip opening is formed in the middle of the hollow seat in the front-back direction, tube connectors are oppositely arranged at the front end and the rear end of the hollow seat in the vertical direction respectively, the first oblique tube penetrates through the first strip opening and is hinged to the middle of the first strip opening at the center through a hinge shaft, the two second oblique tubes are mounted in the tube connectors at the front end and the rear end of the hollow seat respectively, the two second oblique tubes are arranged in parallel and intersect with the first oblique tube in an X shape, and the first oblique tube, the two second oblique tubes and the hollow seat are all located on the same plane. The folding type collapsible wagon provided by the present disclosure is high in space utilization rate and attractive.

A caster with an elastic member that absorbs impact forces during use. The elastic member can be placed between first and second portions pivotable with respect to each other about a pin. The elastic member can absorb impact forces between the first and second portions when in use. The elastic member can further include grooves that allow portions of the elastic member adjacent the grooves to flow into the grooves during impact, further absorbing impact forces.

A translational collapsible wagon includes a frame assembly, a tow bar assembly and wheels. The frame assembly includes a bottom frame, a front frame, a rear frame and collapsible side frames arranged on the left side and the right side of the bottom frame. Each side frame includes coplanar X-shaped cross tube assemblies. Each coplanar X-shaped cross tube assembly includes a first oblique tube, two second oblique tubes and a hollow seat. A strip opening is formed in the middle of the hollow seat in the front-back direction. Tube connectors are oppositely arranged at the front end and the rear end of the hollow seat in the vertical direction respectively. The first oblique tube penetrates through the strip opening and is hinged to the middle of the strip opening at the center through a hinge shaft. The two second oblique tubes are mounted in the tube connectors at the front end and the rear end of the hollow seat respectively and arranged in parallel and intersect with the first oblique in an X shape. The first oblique tube, the two second oblique tubes and the hollow seat are all located on the same plane.

A medical apparatus according to an embodiment of the present invention includes: a medical device; and a plurality of caster units, disposed below the medical device, for supporting the medical device to be movable, wherein each of the plurality of caster units includes: a wheel part; and a shock absorbing member which is configured to support the wheel part and to absorb the shock applied to the wheel part, wherein the shock absorbing member includes: a wheel fixing member for fixing the wheel part; a body fixing member which surrounds the wheel fixing member and is fixed to the medical device; and a cushioning member which is disposed between the wheel fixing member and the body fixing member and is capable of elastic deformation, wherein the shock absorbing member includes: a first deforming part extending in the vertical direction; and a second deformation part extending, from an end of the first deformation part, in a direction different from the extending direction of the first deformation part.

Removable work box casters for a job site work box having support skids comprised of an open polygonal shaped frame having a skid base plate and skid side plates. Each caster has an upper plate segment, a closed end section, a lower plate segment that creates a sleeve between the upper and lower plate segments, and a wheel assembly. The skid base plates of the skids are positioned within the sleeve of a selected removable work box caster. A security device may be included to assist in retaining the skid base plate within the sleeve of the removable work box caster.

A payload platform includes a platform and a castor assembly coupled to the platform. The castor assembly includes a body, a first wheel coupled to the body, and a second wheel coupled to the body. The first wheel and the second wheel are individually actuatable. A sensor is coupled to the body. A control unit is operably coupled to the sensor and operably coupled to the first wheel and to the second wheel. The sensor detects an area surrounding the platform, determines presence of obstacles, and transmits a signal to the control unit corresponding to the area surrounding the platform. The control unit directs the first wheel and the second wheel to rotate in a prescribed manner so as to achieve a prescribed movement of the platform.

A connective unit to connect a roller with a seat's leg is disclosed. The connective unit comprises a supportive arm, a plastic cylindrical member, a pivotally connective member and a roller. The plastic cylindrical member may engage with a cylindrical hole provided in the supportive arm. The upper end of the pivotally connective member may engage with a first connective hole and the lower end of the pivotally connective member may engage with a second connective hole of the roller. Thanks to presence of the plastic cylindrical member, when the pivotally connective member rotates and causes the roller to rotate with it, the supportive arm doesn't have any contact with the pivotally connective member and thus noisy friction and impacts between them as in the prior art may be avoided. Therefore, the plastic cylindrical member is difficult to wear out as the pivotally connective member rotates.