Abstract: A display device includes a base holder having a cavity and a roller assembly. The roller assembly can include an upper cylindrical roller, a lower cylindrical roller, a framework arranged and constructed to maintain the upper cylindrical roller and the lower cylindrical roller a predetermined distance away from each other, and a conveyor belt wrapped around the upper cylindrical roller and the lower cylindrical roller. At least one or more rotating mechanisms can be attached to one or more of a left side of the upper cylindrical roller, a right side of the upper cylindrical roller, a left side of the lower cylindrical roller, or a right side of the lower cylindrical roller, where the one or more rotating mechanisms drive the lower cylinder to rotate and cause the conveyer belt to move around the upper cylinder and the lower cylinder.

Abstract: A display device includes a base holder having a cavity and a roller assembly. The roller assembly can include an upper cylindrical roller, a lower cylindrical roller, a framework arranged and constructed to maintain the upper cylindrical roller and the lower cylindrical roller a predetermined distance away from each other, and a conveyor belt wrapped around the upper cylindrical roller and the lower cylindrical roller. At least one or more rotating mechanisms can be attached to one or more of a left side of the upper cylindrical roller, a right side of the upper cylindrical roller, a left side of the lower cylindrical roller, or a right side of the lower cylindrical roller, where the one or more rotating mechanisms drive the lower cylinder to rotate and cause the conveyer belt to move around the upper cylinder and the lower cylinder.

Abstract: A traction table (200) include a frame having a base-frame portion (202) rotabably coupled to a top-frame portion (250) at a pivot point 214, a seat back portion (208) coupled to the top frame portion, and a seat-bottom (204) slidably coupled to the frame top portion. The seat-bottom can rotate about a pivot point (262) and tilt about at least one axis (260 and/or 264). The seat-bottom can further slide forwards or backwards relative to the top frame portion. The traction table can include an optional neck piece (210) coupled to the top frame portion that can move parallel relative to the seat back portion and constructed to rotate, tilt side to side or forward and backward. The traction table can include at least one actuator motor (245 or 244) for moving the seat-bottom or neck piece relative to the top-frame portion and a controller (212) for controlling such actuator(s).