The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 17, 2012
Filed:
Jul. 18, 2008
Mitsuru Naito, Kanagawa, JP;
Mitsuru Naito, Kanagawa, JP;
The Yokohoma Rubber Co., Ltd., Tokyo, JP;
Abstract
A process in which a self-sealing pneumatic tire consisting of a pneumatic tire after vulcanization molding furnished with a sealant layer being uniform without thickness irregularity and a cover sheet layer therefore is produced without the use of an organic solvent and expensive apparatus; and an apparatus therefore. The process is characterized by sequentially performing the operations of injecting a viscous sealant material onto the internal surface of a pneumatic tire (T) after vulcanization molding; diffusing the sealant material into a sheet form by centrifugal force while rotating the pneumatic tire (T) around the tire axis to thereby form a sealant layer (); injecting a cover material of uncured rubber material or resin material onto the inside surface of the sealant layer (); diffusing the cover material into a sheet form by centrifugal force while rotating the pneumatic tire (T) around the tire axis to thereby form a cover sheet layer (); and irradiating the cover sheet layer () with electron beams, infrared rays, ultraviolet rays or ultrasonic waves to thereby harden the same.