IP Library › Granted Patent US 12697794
Granted Patent B2
US 12697794 · App. 18/021,848 · Granted Aug 4, 2026

Tire curing mold having a sealing element

Inventor: Thomas Lescur (Clermont-Ferrand, FR)
Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
B29D30/0606B29C33/0038B29C43/38B29D2030/0609B29K2905/02B29K2905/12
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12697794
App. No.
18/021,848
Granted
Aug 4, 2026
Kind
B2
Abstract

A tire curing mold ( 20 ) comprises two shells ( 21 ) that are each intended to mold a sidewall of the tire and a ring of sectors ( 22 ) that are intended to mold a tread of the tire, each sector ( 22 ) having a lining ( 23 ) and two arc-shaped segments ( 27 ). Each segment ( 27 ) is arranged so as to fill a clearance at an interface between the lining ( 23 ) and a shell ( 21 ), and so as to not be coincident with a molding surface ( 24 ) of the curing mold.

Claims (12)

1 . A tire curing mold comprising two shells that are each intended to mold a sidewall of a tire and a ring of sectors that are intended to mold a tread of the tire, each sector having a lining and two segments that are arc shaped,

wherein each segment is arranged so as to fill a clearance at an interface between the lining and one of the two shells, and is arranged so that spacing between each segment and a molding surface of the tire curing mold is 0.1 mm to 10 mm so as to not be coincident with the molding surface of the tire curing mold, including not being coincident with the molding surface of the tire curing mold during vulcanization of the tire such that the tire curing mold is capable of forming markings on a shoulder of the tire.

2 . The tire curing mold according to claim 1 , wherein each segment is housed in a recessed groove on a contact surface of the lining at the interface between the lining and one of the two shells.

3 . The tire curing mold according to claim 1 , wherein, in a closed position of the mold, the lining is in contact with one of the two shells only via one of the segments, and the sectors are in circumferential contact in a pairwise manner via the lining.

4 . The tire curing mold according to claim 1 , wherein, in a closed position of the mold, the lining is in contact with one of the two shells via one of the segments and via a contact surface of the lining at the interface between the lining and one of the two shells, and the sectors are in circumferential contact in a pairwise manner via the lining.

5 . The tire curing mold according to claim 1 , wherein each segment is spaced apart from the molding surface.

6 . The tire curing mold according to claim 1 , wherein a material of the lining has an admissible contact pressure greater than or equal to 350 MPa.

7 . The tire curing mold according to claim 1 , wherein a material of the lining is selected from a group of materials comprising ferrous alloys.

8 . The tire curing mold according to claim 1 , wherein the lining is obtained by way of a process of consolidation by selective melting.

9 . The tire curing mold according to claim 1 , wherein a material of one of the segments has an admissible contact pressure lower than 350 MPa.

10 . The tire curing mold according to claim 1 , wherein a material of one of the segments is selected from a group of materials comprising aluminium alloys.

11 . A method for manufacturing a tire comprising a step of curing a tire in the tire curing mold according to claim 1 .