Patent ID: 6113833
Filing Date: 2000-09-05
Classification: B29C,B29D

Abstract:
A segmented core for manufacturing pneumatic tires, comprising:a substantially toroidal core body that includes a plurality of core segments which, when the core body is assembled, are circumferentially arranged side by side, in tight contact with each other, each of the core segments having a radially inner portion, the radially inner portion having one side and another side that is axially opposite to the one side, each core segment defining an arcuate groove in the one and the other side of the radially inner portion, so as to form continuous circumferential grooves when the core body is assembled;a substantially cylindrical sleeve which can be axially inserted into said core body in a coaxial relationship with respect to each other, said sleeve having first and second axial ends and an outer peripheral surface;a first connector member supported by said sleeve at said first axial end so as to be engageable with the one side of the radially inner portion of the core body; anda second connector member which can be detachably connected to the second axial end of said sleeve so as to be engaged with the other side of the radial inner portion of said core body, when the second connector member is connected to said sleeve said second connector having an inner peripheral surface;wherein the first connector member and the second connector member are provided with annular projections engageable with the circumferential grooves;and wherein the inner peripheral surface of the second connector member is provided with a female screw, and the outer peripheral surface of the sleeve is provided with a corresponding male screw.