Tire building drum

Details Tire building drum Tire building drum

B - Operations, Transporting

29

D

154/19.8

B29D 30/24 (2006.01)

Patent

CA 1322515

ABSTRACT OF THE DISCLOSURE A novel tire building drum is provided herein, which is a cylindrical tire building drum. Such drum includes a non-inflatable, non-collapsible, rigid, non-reactive, vulcanization-resistant, unreinforced, synthetic thermo- plastic material shell. The shell is of the same diameter between its two axial ends. It is also provided with a smooth surface between its two axial ends. The shell has a particular specified uniform cylindrical shape, and a central, axially-longitudinally-extending core of a non- circular cross-section. The core is specially adapted for mounting the cylindrical tire building drum on a rotatable, axially-longitudinally-extending shaft of a conventional tire building machine. The core has a plurality of integral, fixed-length, rigid, non-movable, radially- outwardly-projecting, axially-longitudinally-extending ribs. The ribs each project radially between the core and the shell, each such rib being connected to its associated face of the central core and to the shell of the cylindri- cal tire building drum at a thickened area of greater cross-sectional area than the cross-sectional area of the other portions of each rib at both side faces of each rib, thereby to provide rugged reinforcement areas. The cylind- rical tire building drum has an axially-longitudinally- extending length which varies from 1 foot to 20 feet.

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