Laterally stabilized inflatable bead turn-up bladder for...

Details Laterally stabilized inflatable bead turn-up bladder for... Laterally stabilized inflatable bead turn-up bladder for...

B - Operations, Transporting

29

D

B29D 30/18 (2006.01) B29D 30/32 (2006.01)

Patent

CA 2058357

ABSTRACT OF THE DISCLOSURE An improved inflatable bead turn-up bladder for a tire building drum which reduces or eliminates cord length variation in a reinforced tire carcass by stabilizing the bladder in the area utilized for lifting the reinforced cord fabric into contact with the tire bead on the tire building drum. The elastomeric inflatable bladder is formed with an integral annular rib which is seated in complementary shaped grooves or slots formed in the radially movable segments of the tire drum bead locks. When the bead lock segments are actuated, the adjacent portion of the bladder and overlying tire carcass is prevented from axial movement by the engagement of the bladder rib in the bead lock segment groove. A stretch zone is provided in the bladder between the rib and one end of the bladder by eliminating reinforcing material from that area of the bladder.

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