Element for a transporter having a variable speed

Claim 2

A transporter having a variable speed comprising variable units providing said variable speed and formed by displacement members adapted to move along a guide path, control members adapted to follow a cam and non-elastic linkages connecting the displacement members and the control members belonging to the same variable unit, the various variable units being connected by assembly elements, each linkage being formed by at least one chain only able to bend in a half-plane and formed of chainlinks, and carrying on its face turned towards the half-plane, a lining cooperation with a corresponding lining on each assembly element.

Claim 3

A transporter as claimed in claim 1 wherein the lining of the chain is longitudinally divided into elements corresponding to the length of the chain-links, these elements carrying grooves cooperating with ribs of the lining of assembly elements to allow combing of the one by the other.

Claim 4

A transporter as claimed in claim 1 wherein the ribs of the lining of an assembly element are in the form of blades slightly projecting above the upper surface of the ribs of the linings of the chain-links of the linkage.

Claim 5

A transporter as claimed in claim 1 wherein the linkage comprises a support element provided between the displacement members, the support element having a length corresponding to the spacing between the edges of the blades of two consecutive assembly elements, when the displacement members of the variable unit are at their minimum distance.

Claim 6

A transporter as claimed in claim 4 wherein the support element is formed in its upper part of blades having a section corresponding to the blades of the linings of the assembly elements and aligned with these blades so that in the region of a platform, the blades of the linings of the assembly element and the blades of the support elements are aligned with each other and form continuous ribs which are combed by the same combing member provided with teeth corresponding to the spacing of the blades.

Claim 7

A transporter as claimed in claim 5 wherein the leading edge of the blades of the assembly element is inclined downwardly in the direction of the support element and the corresponding edge of the blades of the support element is inclined complementarily so that the upper level of the blades of the support elements is level with the upper edge of the ribs of the linings of the linkages when the link is deployed (the displacement members being separated with respect to each other), this blade sliding by its front ends, against the corresponding ends of the blades of the assembly element when these displacement members of the variable unit approach each other so that the upper face of the blade of the support element is level with the upper faces of the blades of the assembly element.