TIRE VULCANIZATION MOLD AND METHOD FOR MANUFACTURING PNEUMATIC TIRE
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United States of America
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May 9, 2019
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May 9, 2019
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Abstract
The tire vulcanization mold includes a molding surface for molding a tire surface of a pneumatic tire set in a cavity, a concave portion provided on the molding surface, and a vent plug provided in the concave portion. The vent plug includes a housing having a cylindrical shape and including an exhaust passage, a stem that is inserted in the housing and configured to open and close the exhaust passage of the housing, and an urging member urging the stem toward the cavity side. The concave portion has a narrow portion having a width substantially equal to the outer diameter of the housing of the vent plug, and the vent plug is disposed in the narrow portion.
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