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:
Nov. 04, 2014
Filed:
Jan. 20, 2011
Akihiro Ikeda, Aichi, JP;
Masahide Furukawa, Aichi, JP;
Akihiro Ikeda, Aichi, JP;
Masahide Furukawa, Aichi, JP;
Central Motor Wheel Co., Ltd., Aichi, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A method for manufacturing a vehicle wheel is suggested in which the vehicle wheel can provide function and effect of preventing molding defects during molding of an outer rim portion and/or an inner rim portion having sound absorbing spacesand of reducing acoustic cavity noise that occurs in a tire-internal space by use of the sound absorbing spaces. After a separation groove having a curved shape groove bottom surfaceis formed between a ring-shaped wall portion and partition wall portions, the ring-shaped wall portion is bent toward a flange portion, and the ring-shaped wall portion and the flange portion are welded together. The sound absorbing spaces which communicate with each other via communication gaps defined according to the separation groove are thereby formed in the outer rim portion and/or the inner rim portion. In such a method, since the communication gaps can be stably formed, an increase in internal pressure caused by heat expansion of air in the sound absorbing spaces during a heat treatment step can be reduced, thus allowing prevention of molding defects due to the increase in the internal pressure.