Bridgestone Corporation

Institute of Technology Precision Electrical Discharge Work's

Bridgestone Tire Company Limited

Seisuke Sueyasu

Shoji Futamura

Yasutada Yoda

Michihiro Orikawa

A tire manufacturing mold comprising a profile ring having a contour corresponding to the outer profile of a tire being molded, including at least the tread thereof, and a net ring having a faying surface for making contact with the contour surface and consisting of ribs and/or lugs for forming the grooves of the tire being molded. The net ring is disposed on the contour surface of the profile ring. The profile ring and/or the net ring has gas vent members embedded so as to form gas vent gaps on the periphery thereof; and the gas vent gaps formed on the periphery of the gas vent members being constructed as gas vent passages.

Tire manufacturing mold

A tire manufacturing mold comprises a mold body having an inner circumferential surface corresponding to the contour of a tire being molded, and includes at least the tread thereof. The body has a mold attachment for molding recesses of the tire being molded and a joint surface with the inner circumferential surface of the mold body. The mold attachment is detachably fitted to the inner circumferential surface of the mold body.

Vented tire molding mold

A tire molding mold comprising a profile ring having an inner circumferenl surface corresponding to the outer profile of a tire being molded, including at least the tread surface thereof, and a net ring having a faying surface fitted and joined to the inner circumferential surface of the profile ring and consisting of a network of ribs and/or lugs for forming the grooves of the tire being molded; the net ring being disposed on the profile ring wholly, or with the part thereof removed.

Growing community of inventors

Higashimurayama, Japan

Seisuke Sueyasu