Source: https://patents.justia.com/patent/10239270
Timestamp: 2020-08-10 19:57:32
Document Index: 360474788

Matched Legal Cases: ['art 32', 'art 32', 'art 32', 'art 32', 'arts 32', 'art.\n15']

US Patent for Segmented mold for a tire and related molding method Patent (Patent # 10,239,270 issued March 26, 2019) - Justia Patents Search
Justia Patents Including Sidewall Pressure PlatensUS Patent for Segmented mold for a tire and related molding method Patent (Patent # 10,239,270)
Each spacing part 32 also comprises an outer wall 32b which is radially on the opposite side from the inner wall 32a and mounted so as to bear radially against an inner end face of the associated sector 20. The inner end face radially faces the outer end face 16c, or 18c, of each shell, remaining at a distance from the latter. The outer wall 32b is mounted so as to bear radially against an axial inner end face 26a of the support 26 and against a frustoconical inner end face 28a of the mold fitting 28. The end faces 26a, 28a form the inner end face of the sector.
As illustrated more clearly in FIGS. 3 and 4, each spacing part 32 is delimited in the circumferential direction by two opposite end walls (not referenced). The end walls delimit the cavity 38 in the circumferential direction. In the closed position of the mold 10, each end wall of a spacing part 32 is mounted so as to bear against one of the end walls of the immediately adjacent spacing part 32. In this position, the spacing means 30 are positioned end-to-end in the circumferential direction and the spacing parts 32 delimit the lower and upper rings interposed between the sectors 20 and the shells 16, 18. In the closed position of the mold 10, there is a slight circumferential clearance between two adjacent supports 26 and the mold fittings 28 bear against one another in the circumferential direction.
first and second shells that are intended to mold the lateral sidewalls of the tire,
a plurality of sectors distributed in the circumferential direction that are intended to mold the tread of said tire, the plurality of sectors being radially movable between an open position and a closed position of the mold,
wherein a spacing is interposed between each sector and each of the first and second shells in order to keep said sector and the first and second shells spaced apart in the radial direction in the closed position of the mold, and
wherein the first and second shells and the sectors are in contact in the radial direction only by way of the spacing for, said spacing limiting the heat transfer from the first and second shells to the sectors and vice versa in said closed position of the mold.
3. The Mold according to claim 1, wherein each spacing comprises a spacing part made in the form of a section of a ring, the spacing being disposed such that the spacing parts form at least one ring between the sectors and each of the first and second shells.
7. The Mold according to claim 3, wherein the spacing comprises at least one fastening part extending substantially radially from the spacing part inside a hole formed in an associated one of the sectors or in an associated one of the shells.
8. The Mold according to claim 7, comprising a fastening that is mounted in said hole and extends inside said fastening part.
15. A Method for molding a tire with a mold,
providing the mold to mold a tire having a tread and two lateral sidewalls, the mold including:
a plurality of sectors distributed in the circumferential direction, the sectors being intended to mold the tread of said tire, the plurality of sectors being radially movable between an open position and a closed position of the mold,
wherein a spacing is interposed between each sector and each of the first and second shells in order to keep said sector and the first and second shells spaced apart in the radial direction in the closed position of the mold,
wherein the first and second shells and the sectors are in contact in the radial direction only by way of the spacing,
said spacing limiting the heat transfer from the first and second shells to the sectors and vice versa in said closed position of the mold, and
wherein the first and second shells are heated to a temperature different from that to which the sectors of the mold are heated.
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Patent number: 10239270
Patent Publication Number: 20160318268
Current U.S. Class: Including Sidewall Pressure Platens (425/22)