Patent ID: 7866359
Filing Date: 2011-01-11
Classification: B29D

Abstract:
1. An assembly drum of variable diameter D for the manufacture of a tire blank, the assembly drum comprising: a plurality of mechanical elements defining a substantially cylindrical laying surface of the assembly drum, the laying surface being provided with circular grooves arranged axially in a zone intended to receive profiled elements of a thickness (P a plurality of mechanical rods distributed circumferentially and the lengths of which are adjustable such that, when the drum D is moved to a first laying diameter, two ends of each said mechanical rods butt up respectively against a circumferential stop of a constant diameter and a radially inner surface of a respective elastic circumferential body of said elastic circumferential bodies, and move the respective elastic circumferential body radially apart from a bottom of the respective circular groove, so as to align a radially outer surface of the respective elastic circumferential body with the laying surface of the drum.