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:
Apr. 22, 2008
Filed:
Feb. 25, 2003
Kouji Hirose, Tokyo, JP;
Kouji Hirose, Tokyo, JP;
Kabushiki Kaisha Bridgestone, Tokyo, JP;
Abstract
Semi-circular cover membersandhaving a spring function for opening and closing the openings of poresS are provided on the cavity inner wall side of a porous air ventin order to close the openings of the above poresS while a small space remains between the above cover membersandand the openings of the poresS of the porous air vent during vulcanization, whereby the occurrence of the occlusion of the above poresS is reduced and stains adhered to the cavity inner wall side of the moldare removed by physical means such as a blast treatment while the above cover membersandare closed at the time of cleaning to remove the stains of the above mold. Further, the above openings are opened as required to allow a cleaning liquidgo into the above poresS to clean the above moldand remove stains in the poresS.