Patent ID: 6626218
Filing Date: 2003-09-30
Classification: B29C,B29D,B29L,B60C,Y10T

Abstract:
A pneumatic tire having a toroidal shape in which bead portions are connected to sidewall portions extending radially inward from opposite ends of a tread portion and a sealant for preventing a blowout is disposed in the form of a single elongated chamber to extend in a circumferential direction in said tread portion, wherein a seal unit formed by sealing said sealant for preventing said blowout in a sack member in advance is disposed to extend in said circumferential direction of said tire in said tread portion prior to vulcanization of the tire, andwherein the single elongated chamber has one opening portion for injecting the sealant at an end of the single elongated chamber in the circumferential direction of the tire, said opening adapted to be closed after the sealant is injected into the elongated chamber, and said sack member is formed by polyfluoroethylene film, or nylon film, or polyethylene film.