Patent ID: 8439186

Claim:
An endless carrier belt for a conveyor device, said endless carrier belt ( 1 ) comprising: a flat body of flexible material and in a flat form, the flat body ( 2 ) having a width (L), a longitudinal central plane (X) and a thickness (e), a bottom face ( 3 ) intended to receive a product to be carried, and a lower face ( 4 ), a plurality of longitudinal reinforcing members ( 6 ) integrated into the thickness (e) of said flat body ( 2 ), the reinforcing members ( 6 ) adapted to restrict the longitudinal extension possibilities of the flat body ( 2 ), wherein said reinforcing members ( 6 ) are positioned only in two areas of the width (L) of said flat body ( 2 ), the two areas located at ¼ or approximately ¼ of said width (L), on either side of said central plane (X), single-piece studs ( 5 ) provided on the lower face ( 4 ), two end transmission structures ( 10 and 11 ), one of which is motorized, and on both of which said endless carrier belt ( 1 ) is rolled in a flat configuration, at least said motorized transmission structure ( 11 ) comprising driving elements that cooperate with said single-piece studs ( 5 ) provided on the lower face ( 4 ) of the endless carrier belt ( 1 ), to drive the latter, and means ( 19 - 20 ; 21 ) for shaping the upper strand of said endless carrier belt ( 1 ) into a tubular or substantially tubular transverse configuration, with the longitudinal edges raised up and coming side by side or practically side by side with each other, the two longitudinal reinforcing members ( 6 ) or groups of longitudinal reinforcing members ( 6 ) of said endless carrier belt ( 1 ) being then positioned on the horizontal diameter (P) of the cross section of said tubular structure ( 1 ) obtained, or substantially on this horizontal diameter, wherein the means for shaping the endless carrier belt into a tubular or substantially tubular transverse configuration are comprised, at least in part, of longitudinal guiding members ( 7 ) against which rests the lower face ( 4 ) of the upper strand of said endless carrier belt ( 1 ), said guiding members ( 7 ) cooperating with the driving studs ( 5 ) provided on the lower face ( 4 ) of said endless carrier belt ( 1 ), to avoid the lateral displacement of said endless belt ( 1 ), and wherein the longitudinal reinforcing members ( 6 ) are embedded in the mass of the flat body ( 2 ), each at the neutral fiber of said flat body ( 2 ), approximately in the middle of the thickness (e).