Title:
MOLDING METHOD FOR CABLE BEAD CORD
Document Type and Number:
Japanese Patent JP3499261
Kind Code:
B2
Abstract:
PURPOSE: To obtain a cable bead cord in which a nerve of a pneumatic tire can be strengthened more than that of prior art.
CONSTITUTION: Small-diameter filaments 16 are continuously spirally wound on a periphery of a mild steel filament 14 until one cable bead cord 10 is completed, and so wound that the seven filaments 16 are disposed on a periphery of an inner core 12 of the filament 14 when seen in a section to form an outer layer 18. The filaments 16 before winding on the core 12 is previously wound in a doughnut state in such a manner that the relationship between its radius R2 of curvature and its radius R1 of curvature of the core 12 is set to R2≥2×R1 to be larger than that of prior art. A nerve of a pneumatic tire can be strengthened by using the cord 10 molded by this method.
Inventors:
Kiyoshi Takase
Application Number:
JP21764693A
Publication Date:
February 23, 2004
Filing Date:
September 01, 1993
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
B21F37/00; B29D30/48; B60C15/04; (IPC1-7): B29D30/48; B60C15/04
Domestic Patent References:
| JP53104239U |
Attorney, Agent or Firm:
Atsushi Nakajima (1 person outside)