B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
B30B11/16—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using pocketed rollers, e.g. two co-operating pocketed rollers
B30B11/165—Roll constructions
B—PERFORMING OPERATIONS; TRANSPORTING
B30—PRESSES
B30B—PRESSES IN GENERAL
B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
B30B11/16—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using pocketed rollers, e.g. two co-operating pocketed rollers
Procede de fabrication d'un ressort helicoidal a spires plates, un ressort helicoidal obtenu par la mise en oeuvre de ce procede, ainsi qu'un ensemble de direction comportant un tel ressort