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
Piece annulaire, elastique et bombee, de conicite variable utilisable comme element de manoeuvre d'un embrayage a friction et embrayage a friction comportant une telle piece