Venting apparatus for a tire vulcanizing mold
US6923629B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2003 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Oct 10, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/812
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to an improved venting apparatus installed in a tire vulcanizing mold. In the venting apparatus, an inner diameter of a center through hole formed in the casing is gradually increased in an upper direction and is gradually decreased in a lower direction for thereby forming a tapered shape. The angles of the slant surfaces of the valve head point-contacting with an upper corner portion of the center through hole are different, so that a discharging capability of air is enhanced, and it is possible to prevent a formation of a vent rubber in a finished tire which vent rubber is formed when a rubber flows into a venting apparatus. In addition, it is possible to prevent an error operation during vulcanization and to extend a life span of a venting apparatus. The maintenance is easier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.