The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 22, 2010
Filed:
Dec. 14, 2006
Stéphane Ravat, Clermont-Ferrand, FR;
Stéphane Ravat, Clermont-Ferrand, FR;
Michelin Recherche et Technique S.A., Granges-Paccot, CH;
Abstract
A shaping drum for a tire blank comprising bottom zones formed of a circular reinforcement ring which is moved in rotation about an axis XX', comprising bead-holding means () mounted opposite one another on a central spindle. Each of the bead-holding means comprises a support () mounted to be axially movably relative to the spindle. An assembly of return segments () is distributed circumferentially around the axis XX′, which circulate radially between two circular rings (, 6, 7) fixed on the support (), and comprises a bead-receiving seat (). A turn-up membrane () can slide over the bead-receiving seat, anchored in an airtight manner by its two ends () on the radially outer circumference of the circular rings () and anchored mechanically by appropriate means () on the return segments () along a circumferential anchoring line (). The section of the bead-receiving seat () is of essentially circular shape with a developed length L, and the circumferential anchoring line of the turn-up membrane () on the return segments () is axially offset towards the centre of the drum by a length Lrelative to the bead receiving seat (), the length Lbeing between 0.7 and 2 times the length L