Plastic article or earthenware shaping or treating: apparatus – Reshaping – resizing or vulcanizing means for tire – tire... – Toroidal or annular female shaping means and coacting means...
Reexamination Certificate
2006-04-11
2006-04-11
Mackey, James P. (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
Reshaping, resizing or vulcanizing means for tire, tire...
Toroidal or annular female shaping means and coacting means...
C425S812000
Reexamination Certificate
active
07025581
ABSTRACT:
There is provided a vulcanizing mold for a tire in which the capacity of venting air through between the molding pieces of the sector mold is significantly enhanced. A tread ring for vulcanizing and shaping a tread of the tire comprises plural sector molds which are separately formed in the circumferential direction so as to be brought into surface contact with each other. Each of the sector molds comprises segments and plural movable molding pieces circumferentially aligned and disposed on the inner surface side of the segment, and each of the movable molding pieces of each sector mold is urged away from each other.
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patent: 5-220748 (1993-08-01), None
patent: WO-A 00/20184 (2000-04-01), None
Bridgestone Corporation
Mackey James P.
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