Patent Number: 6,250,901

Title: Segmented mold for pneumatic tires

Abstract: A segmented mold for pneumatic tires includes a plurality of segmented tread mold pieces for forming an outer contour of a tire tread portion, a plurality of connector segments detachably connected to outer peripheral surfaces of the respective tread mold pieces, and a container ring slidably engaged with tapered portions of the connector segments such that an axial movement of the container ring causes radial movement of each tread mold piece. The connector segments are detachably connected with the respective tread mold pieces, by locking engagement of first latch members of the connector segments with second latch members of the tread mold pieces. A relative movement between the first and second latch members is caused by an actuating mechanisms so that the first and second latch members are engaged with each other upon relative movement of the first and second latch members in a predetermined direction thereby connecting the connector segments to the tread mold pieces, and the first and second latch members are disengaged from each other upon relative movement of the first and second latch members in an opposite direction thereby disconnecting the connector segments from the tread mold pieces.

Inventors: Nagata; Masami (Kodaira, JP)

Assignee: Bridgestone Corporation

International Classification: B29C 33/30 (20060101); B29D 30/06 (20060101); B29C 035/02 ()

Expiration Date: 06/26/2018