Vent plug for a tire vulcanization mold, tire vulcanization...

Details Vent plug for a tire vulcanization mold, tire vulcanization... Vent plug for a tire vulcanization mold, tire vulcanization...

2009-03-04

2010-12-14

Wyrozebski, Kat (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

Reshaping, resizing or vulcanizing means for tire, tire...

C264S326000

Reexamination Certificate

active

07850439

ABSTRACT:
The invention relates to a vent plug for a tire vulcanization mold used for a vent hole of the mold, the tire vulcanization mold, and a manufacturing method for the tire using the mold. The vent plug includes a plug holder with a hollow ventilation portion and a plug head within the ventilation portion. The plug holder includes a tapered seat portion, an inside diameter of which becomes smaller toward a mold rear side, and a cylinder portion located at the mold rear side of the seat portion. The plug head includes a tapered head portion, an outer diameter of which becomes smaller toward the mold rear side, a base body portion located at the mold rear side of the head portion, and a slit portion communicating with the ventilation portion from an upper end face of the plug head.

REFERENCES:
patent: 5059380 (1991-10-01), Wise et al.
patent: 5922237 (1999-07-01), Green
patent: 5939101 (1999-08-01), Green
patent: 6206336 (2001-03-01), Espie et al.
patent: 10-146840 (1998-06-01), None
patent: 10-296735 (1998-11-01), None
patent: 2005-028589 (2005-02-01), None
patent: WO 2007/100308 (2007-09-01), None

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