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A travelator, moving ramp or escalator comprises a conveyor having a driven end driven by a power machine and a non-driven end. At the driven end, a first drive element, in the form of an endless loop, is passed over a first driving pulley rotated by the power machine, and at the non-driven end the

A travelator, moving ramp or escalator comprises a conveyor having a driven end driven by a power machine and a non-driven end. At the driven end, a first drive element, in the form of an endless loop, is passed over a first driving pulley rotated by the power machine, and at the non-driven end the first drive element is passed over a first diverting pulley. A second drive element, in the form of an endless loop, is passed over a second driving pulley at the driven end rotated by the power machine, and over a second diverting pulley at the non-driven end. A first synchronizing device at the driven end provides mutual synchronization of the first and second driving pulleys. The conveyor additionally comprises a second synchronizing device arranged at the non-driven end for mutual synchronization of the first and second diverting pulleys.

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What is claimed is: 1. A travelator, moving ramp or escalator, comprising: a power machine; a conveyor having a driven end driven by the power machine, and a non-driven end, the conveyor comprising: a first drive element and a second drive element at a distance from and parallel to the first drive

What is claimed is: 1. A travelator, moving ramp or escalator, comprising: a power machine; a conveyor having a driven end driven by the power machine, and a non-driven end, the conveyor comprising: a first drive element and a second drive element at a distance from and parallel to the first drive element, each drive element comprising an endless loop; a plurality of transport platforms arranged one after the other and secured to the first and second drive elements; a first driving pulley disposed at the driven end and over which the first drive element is passed, the first driving pulley being arranged to be rotated by the power machine; a first diverting pulley disposed at the non-driven end and over which the first drive element is passed; a second driving pulley disposed at the driven end and over which the second drive element is passed, the second driving pulley being arranged to be rotated by the power machine; a second diverting pulley disposed at the non-driven end and over which the second drive element is passed; a first synchronizing device arranged at the driven end for mutual synchronization of the first driving pulley and the second driving pulley; a second synchronizing device arranged at the non-driven end for mutual synchronization of the first diverting pulley and the second diverting pulley; and wherein the first synchronizing device at the driven end comprises: a first synchronizing shaft connected to the power machine for rotation; a third driving pulley mounted on the first synchronizing shaft; a third diverting pulley mounted on the same shaft with the first driving pulley; a third drive element comprising an endless loop passed over the third driving pulley and the third diverting pulley; a fourth driving pulley mounted on the first synchronizing shaft at a distance from the third driving pulley; a fourth diverting pulley mounted on the same shaft with the second driving pulley; and a fourth drive element comprising an endless loop passed over the fourth driving pulley and the fourth diverting pulley. 2. A travelator, moving ramp or escalator as defined in claim 1 wherein the second synchronizing device at the non-driven end comprises: a second synchronizing shaft; a fifth diverting pulley mounted on the second synchronizing shaft; a sixth diverting pulley mounted on the same shaft with the first diverting pulley; a fifth drive element comprising an endless loop and passed over the fifth diverting pulley and the sixth diverting pulley; a seventh diverting pulley mounted on the second synchronizing shaft at a distance from the fifth diverting pulley; an eighth diverting pulley mounted on the same shaft with the second diverting pulley; and a sixth drive element comprising an endless loop over and passed over the seventh diverting pulley and the eighth diverting pulley. 3. A travelator, moving ramp or escalator according to claim 2, wherein the first and second diverting pulleys have coincident axes of rotation and the second synchronizing shaft is at a distance from the coincident axes of rotation of the first and second diverting pulleys. 4. A travelator, moving ramp or escalator according to claim 3, wherein the transport platforms have a track of motion and the second synchronizing shaft is outside the track of motion of the transport platforms. 5. A travelator, moving ramp or escalator according to claim 3, wherein the transport platforms have a track of motion which includes an upper transport portion and a lower return portion; and the second synchronizing shaft is inside the track of motion of the transport platforms, arranged between the upper transport portion and the lower return portion. 6. A travelator, moving ramp or escalator according to claim 2, wherein the first and second driving pulleys have coincident axes of rotation and the first synchronizing shaft is at a distance from the coincident axes of rotation of the first and second driving pulleys. 7. A travelator, moving ramp or escalator according to claim 6, wherein the transport platforms have a track of motion and the first synchronizing shaft is outside the track of motion of the transport platforms. 8. A travelator, moving ramp or escalator according to claim 6, wherein the transport platforms have a track of motion which includes an upper transport portion and a lower return portion; and the first synchronizing shaft is inside the track of motion of the transport platforms, arranged between the upper transport portion and the lower return portion. 9. A travelator, moving ramp or escalator according to claim 1, wherein the first drive element and the second drive element comprise link chains. 10. A travelator, moving ramp or escalator according to claim 1, wherein the first drive element and the second drive element comprise toothed belts. 11. A travelator, moving ramp or escalator according to claim 1, wherein the travelator, moving ramp or escalator has a low construction height mounted on a fixed base including one of a floor or other support.