<p>The present invention differs fundamentally from prior art because it provides for machining a substantial number of relatively thin annular tooling plates (10), fitting them together side-by-side in two opposed mold sides, and engraving the tread pattern into the interior face of the assembled plates in two or more complementary mold parts to form a unique tire mold (12). In one form of the disclosed construction two halves are built up and internally engraved to form a two-piece clamshell mold. This building up of annular plates (10) applies also to the construction of segmented molds, wherein there are multiple complementary mold sections which are joined to provide a complete circumferential mold. Thus, the invention applies to both two-piece clamshell molds and segmented molds. The invention encompasses an all engraved mold and all venting (22) in the circumferential direction.</p>
申请公布号
WO2004052589(A1)
申请公布日期
2004.06.24
申请号
WO2003US40153
申请日期
2003.12.08
申请人
COOPER TECHNOLOGY SERVICES, LLC;LAHR, NILE, A.;CORBIN, JOHN, D.;ARBAUGH, P., GLENN
发明人
LAHR, NILE, A.;CORBIN, JOHN, D.;ARBAUGH, P., GLENN